Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:248 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338-378 Weath. Mag. load data
Case Length (l3):2.91"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:137 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:10.5
Load data in caliber .338-378 Weath. Mag. with .338 | 248gr | Peregrine Plainsmaster (VLR-4) bullet and 213 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and ReloadSwiss RS 80.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 54,694 psi | 86% | 2779 fps | 100% |
| Accurate 3100 | <<locked>> | 90% | 54,694 psi | 86% | 2779 fps | 100% |
| Accurate 3100 | <<locked>> | 90% | 55,811 psi | 87% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,434 psi | 87% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,434 psi | 87% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,579 psi | 89% | 2815 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 56,739 psi | 89% | 2940 fps | 99.9% |
| Accurate High Country | <<locked>> | 88% | 56,739 psi | 89% | 2940 fps | 99.9% |
| Accurate High Country | <<locked>> | 86% | 54,099 psi | 85% | 2904 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 57,667 psi | 90% | 2946 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 90% | 57,667 psi | 90% | 2946 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 88% | 54,897 psi | 86% | 2907 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 88% | 56,608 psi | 89% | 2871 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 56,608 psi | 89% | 2871 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 57,740 psi | 90% | 2890 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 54,650 psi | 86% | 2884 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 90% | 54,650 psi | 86% | 2884 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 90% | 55,898 psi | 88% | 2904 fps | 99.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,652 psi | 89% | 2910 fps | 100% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,652 psi | 89% | 2910 fps | 100% |
| ADI AR 2217 | <<locked>> | 98% | 54,143 psi | 85% | 2877 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 49,124 psi | 77% | 2887 fps | 97.1% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 49,124 psi | 77% | 2887 fps | 97.1% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 50,386 psi | 79% | 2917 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,039 psi | 80% | 2874 fps | 100% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,039 psi | 80% | 2874 fps | 100% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2897 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,898 psi | 89% | 2867 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,898 psi | 89% | 2867 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 54,288 psi | 85% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,898 psi | 89% | 2854 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,898 psi | 89% | 2854 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 54,389 psi | 85% | 2822 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,260 psi | 88% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,260 psi | 88% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,334 psi | 90% | 2881 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,911 psi | 86% | 2877 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,911 psi | 86% | 2877 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,173 psi | 88% | 2897 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,565 psi | 89% | 2835 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,565 psi | 89% | 2835 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 57,740 psi | 90% | 2854 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,536 psi | 89% | 2907 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,536 psi | 89% | 2907 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 54,114 psi | 85% | 2877 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,174 psi | 90% | 2927 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,174 psi | 90% | 2927 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 54,418 psi | 85% | 2890 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2943 fps | 98.2% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2943 fps | 98.2% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 55,376 psi | 87% | 2969 fps | 98.5% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 46,557 psi | 73% | 2815 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,666 psi | 87% | 2848 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,666 psi | 87% | 2848 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 56,782 psi | 89% | 2871 fps | 98.7% |
| Bofors RP15 | <<locked>> | 92% | 54,288 psi | 85% | 2867 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 54,288 psi | 85% | 2867 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 55,361 psi | 87% | 2887 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 56,130 psi | 88% | 2923 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 56,130 psi | 88% | 2923 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 57,508 psi | 90% | 2946 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 54,911 psi | 86% | 2877 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 54,911 psi | 86% | 2877 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 56,173 psi | 88% | 2897 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 57,072 psi | 89% | 2799 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 57,072 psi | 89% | 2799 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 54,375 psi | 85% | 2877 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 54,375 psi | 85% | 2877 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 55,709 psi | 87% | 2897 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 57,116 psi | 90% | 2854 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 57,116 psi | 90% | 2854 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 54,215 psi | 85% | 2818 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 88% | 54,215 psi | 85% | 2818 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 88% | 55,216 psi | 87% | 2838 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,840 psi | 89% | 2858 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,840 psi | 89% | 2858 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 54,215 psi | 85% | 2825 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,956 psi | 89% | 2772 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,956 psi | 89% | 2772 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 54,389 psi | 85% | 2743 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 55,390 psi | 87% | 2992 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 55,390 psi | 87% | 2992 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 56,913 psi | 89% | 3018 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,434 psi | 59% | 1775 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,434 psi | 59% | 1775 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,507 psi | 59% | 1785 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,695 psi | 87% | 2792 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,695 psi | 87% | 2792 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,608 psi | 89% | 2808 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 55,941 psi | 88% | 2789 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 55,941 psi | 88% | 2789 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,971 psi | 89% | 2808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,897 psi | 86% | 2799 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,897 psi | 86% | 2799 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 88% | 55,854 psi | 88% | 2818 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 92% | 56,826 psi | 89% | 2923 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 92% | 56,826 psi | 89% | 2923 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 90% | 54,201 psi | 85% | 2887 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,485 psi | 73% | 2789 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,485 psi | 73% | 2789 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 47,776 psi | 75% | 2815 fps | 99.5% |
| Lovex S065 | <<locked>> | 82% | 55,782 psi | 87% | 2766 fps | 100% |
| Lovex S065 | <<locked>> | 82% | 55,782 psi | 87% | 2766 fps | 100% |
| Lovex S065 | <<locked>> | 82% | 56,768 psi | 89% | 2782 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,711 psi | 90% | 2818 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,711 psi | 90% | 2818 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 55,013 psi | 86% | 2782 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,086 psi | 88% | 2799 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,086 psi | 88% | 2799 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,377 psi | 90% | 2818 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,797 psi | 89% | 2851 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,797 psi | 89% | 2851 fps | 100% |
| Norma 204 | <<locked>> | 82% | 53,998 psi | 85% | 2812 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 47,079 psi | 74% | 2815 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 47,079 psi | 74% | 2815 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 48,443 psi | 76% | 2838 fps | 100% |
| Norma MRP | <<locked>> | 88% | 54,998 psi | 86% | 2894 fps | 100% |
| Norma MRP | <<locked>> | 88% | 54,998 psi | 86% | 2894 fps | 100% |
| Norma MRP | <<locked>> | 88% | 56,144 psi | 88% | 2913 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,638 psi | 90% | 2831 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,638 psi | 90% | 2831 fps | 100% |
| Norma URP | <<locked>> | 82% | 54,940 psi | 86% | 2799 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 53,635 psi | 84% | 2881 fps | 99.9% |
| Ramshot Grand | <<locked>> | 90% | 53,635 psi | 84% | 2881 fps | 99.9% |
| Ramshot Grand | <<locked>> | 90% | 55,216 psi | 87% | 2907 fps | 100% |
| Ramshot Hunter | <<locked>> | 84% | 56,565 psi | 89% | 2844 fps | 100% |
| Ramshot Hunter | <<locked>> | 84% | 56,565 psi | 89% | 2844 fps | 100% |
| Ramshot Hunter | <<locked>> | 84% | 57,696 psi | 90% | 2864 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,217 psi | 88% | 2874 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,217 psi | 88% | 2874 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 57,638 psi | 90% | 2894 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,319 psi | 60% | 1818 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,319 psi | 60% | 1818 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,392 psi | 60% | 1824 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,709 psi | 87% | 2822 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,709 psi | 87% | 2822 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,884 psi | 89% | 2841 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,418 psi | 85% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,418 psi | 85% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 55,477 psi | 87% | 2871 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,014 psi | 88% | 2982 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,014 psi | 88% | 2982 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 53,417 psi | 84% | 2949 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,332 psi | 87% | 2949 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,332 psi | 87% | 2949 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 56,826 psi | 89% | 2972 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 88% | 57,377 psi | 90% | 2838 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 88% | 57,377 psi | 90% | 2838 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 86% | 54,723 psi | 86% | 2805 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 55,724 psi | 87% | 2848 fps | 100% |
| Rottweil R 905 | <<locked>> | 88% | 55,724 psi | 87% | 2848 fps | 100% |
| Rottweil R 905 | <<locked>> | 88% | 56,884 psi | 89% | 2871 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 57,072 psi | 89% | 2799 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 57,072 psi | 89% | 2799 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,782 psi | 87% | 2766 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,782 psi | 87% | 2766 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,768 psi | 89% | 2782 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,711 psi | 90% | 2818 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,711 psi | 90% | 2818 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 55,013 psi | 86% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,737 psi | 86% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,737 psi | 86% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,680 psi | 87% | 2740 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,317 psi | 87% | 2844 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,317 psi | 87% | 2844 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 56,478 psi | 89% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 55,085 psi | 86% | 2779 fps | 99.5% |
| Somchem S361 | <<locked>> | 86% | 55,085 psi | 86% | 2779 fps | 99.5% |
| Somchem S361 | <<locked>> | 86% | 56,144 psi | 88% | 2799 fps | 99.6% |
| Somchem S365 | <<locked>> | 84% | 55,042 psi | 86% | 2785 fps | 100% |
| Somchem S365 | <<locked>> | 84% | 55,042 psi | 86% | 2785 fps | 100% |
| Somchem S365 | <<locked>> | 84% | 56,173 psi | 88% | 2802 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,101 psi | 88% | 2818 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,101 psi | 88% | 2818 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,188 psi | 90% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,521 psi | 87% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,521 psi | 87% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 56,565 psi | 89% | 2789 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,854 psi | 88% | 2802 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,854 psi | 88% | 2802 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,029 psi | 89% | 2822 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 54,665 psi | 86% | 2822 fps | 96.7% |
| Vihtavuori N170 | <<locked>> | 96% | 54,665 psi | 86% | 2822 fps | 96.7% |
| Vihtavuori N170 | <<locked>> | 96% | 55,767 psi | 87% | 2844 fps | 97% |
| Vihtavuori N550 | <<locked>> | 82% | 54,665 psi | 86% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 54,665 psi | 86% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 55,782 psi | 87% | 2799 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,795 psi | 86% | 2812 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,795 psi | 86% | 2812 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 56,028 psi | 88% | 2831 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 54,665 psi | 86% | 2897 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 88% | 54,665 psi | 86% | 2897 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 88% | 55,753 psi | 87% | 2920 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 94% | 54,824 psi | 86% | 2884 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 94% | 54,824 psi | 86% | 2884 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 94% | 56,173 psi | 88% | 2907 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 98% | 56,043 psi | 88% | 2949 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 98% | 56,043 psi | 88% | 2949 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 98% | 57,551 psi | 90% | 2976 fps | 99.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 3012 fps | 98.4% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 3012 fps | 98.4% |
| Vihtavuori N570 | <<locked>> | 98% | 54,534 psi | 85% | 2972 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,984 psi | 86% | 2726 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,984 psi | 86% | 2726 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 55,999 psi | 88% | 2743 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,276 psi | 90% | 2858 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,276 psi | 90% | 2858 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 55,796 psi | 87% | 2923 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 55,796 psi | 87% | 2923 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 57,392 psi | 90% | 2943 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,043 psi | 88% | 2818 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,043 psi | 88% | 2818 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,217 psi | 90% | 2838 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 38,827 psi | 61% | 2516 fps | 99.7% |
| Accurate 3100 | <<locked>> | 80% | 38,827 psi | 61% | 2516 fps | 99.7% |
| Accurate 3100 | <<locked>> | 80% | 39,639 psi | 62% | 2536 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 51,808 psi | 81% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 51,808 psi | 81% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 52,765 psi | 83% | 2762 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 42,612 psi | 67% | 2697 fps | 98.3% |
| Accurate High Country | <<locked>> | 80% | 42,612 psi | 67% | 2697 fps | 98.3% |
| Accurate High Country | <<locked>> | 80% | 43,627 psi | 68% | 2717 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 80% | 40,248 psi | 63% | 2638 fps | 96.5% |
| Accurate MAGPRO | <<locked>> | 80% | 40,248 psi | 63% | 2638 fps | 96.5% |
| Accurate MAGPRO | <<locked>> | 80% | 41,133 psi | 64% | 2657 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 80% | 43,192 psi | 68% | 2648 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 80% | 43,192 psi | 68% | 2648 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 80% | 44,150 psi | 69% | 2667 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 38,537 psi | 60% | 2585 fps | 97.1% |
| ADI AR 2213 | <<locked>> | 80% | 38,537 psi | 60% | 2585 fps | 97.1% |
| ADI AR 2213 | <<locked>> | 80% | 39,392 psi | 62% | 2608 fps | 97.5% |
| ADI AR 2217 | <<locked>> | 84% | 32,677 psi | 51% | 2444 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 84% | 32,677 psi | 51% | 2444 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 84% | 33,388 psi | 52% | 2467 fps | 95.7% |
| ADI AR 2218 | <<locked>> | 98% | 45,585 psi | 71% | 2815 fps | 96% |
| ADI AR 2218 | <<locked>> | 98% | 45,585 psi | 71% | 2815 fps | 96% |
| ADI AR 2218 | <<locked>> | 96% | 43,424 psi | 68% | 2772 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 82% | 27,659 psi | 43% | 2352 fps | 96% |
| ADI AR 2225 | <<locked>> | 82% | 27,659 psi | 43% | 2352 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 26,440 psi | 41% | 2313 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,598 psi | 68% | 2648 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,598 psi | 68% | 2648 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,396 psi | 70% | 2664 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,937 psi | 78% | 2753 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,937 psi | 78% | 2753 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,749 psi | 80% | 2769 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,192 psi | 68% | 2641 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,192 psi | 68% | 2641 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,990 psi | 69% | 2657 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,986 psi | 61% | 2592 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,986 psi | 61% | 2592 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,900 psi | 63% | 2612 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,710 psi | 59% | 2539 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,710 psi | 59% | 2539 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,580 psi | 60% | 2556 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,474 psi | 51% | 2470 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,474 psi | 51% | 2470 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,286 psi | 52% | 2497 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,163 psi | 66% | 2694 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,163 psi | 66% | 2694 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,366 psi | 68% | 2717 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 42,757 psi | 67% | 2740 fps | 95.4% |
| Alliant Reloder-33 | <<locked>> | 94% | 42,757 psi | 67% | 2740 fps | 95.4% |
| Alliant Reloder-33 | <<locked>> | 94% | 44,005 psi | 69% | 2769 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 98% | 43,004 psi | 67% | 2746 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 43,279 psi | 68% | 2621 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 43,279 psi | 68% | 2621 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 41,292 psi | 65% | 2589 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 36,318 psi | 57% | 2530 fps | 97.6% |
| Bofors RP15 | <<locked>> | 80% | 36,318 psi | 57% | 2530 fps | 97.6% |
| Bofors RP15 | <<locked>> | 80% | 37,101 psi | 58% | 2549 fps | 97.9% |
| Bofors RP30 | <<locked>> | 82% | 32,039 psi | 50% | 2457 fps | 95.3% |
| Bofors RP30 | <<locked>> | 82% | 32,039 psi | 50% | 2457 fps | 95.3% |
| Bofors RP30 | <<locked>> | 82% | 32,909 psi | 52% | 2480 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 38,986 psi | 61% | 2592 fps | 98.4% |
| Bofors RP5 | <<locked>> | 80% | 38,986 psi | 61% | 2592 fps | 98.4% |
| Bofors RP5 | <<locked>> | 80% | 39,900 psi | 63% | 2612 fps | 98.7% |
| Bofors RP7 | <<locked>> | 80% | 53,563 psi | 84% | 2749 fps | 100% |
| Bofors RP7 | <<locked>> | 80% | 53,563 psi | 84% | 2749 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 30,951 psi | 49% | 2398 fps | 95% |
| Hodgdon H1000 | <<locked>> | 80% | 30,951 psi | 49% | 2398 fps | 95% |
| Hodgdon H1000 | <<locked>> | 80% | 31,662 psi | 50% | 2421 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 53,417 psi | 84% | 2802 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 53,417 psi | 84% | 2802 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,162 psi | 65% | 2589 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 80% | 41,162 psi | 65% | 2589 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 80% | 41,887 psi | 66% | 2608 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,379 psi | 63% | 2572 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,379 psi | 63% | 2572 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,234 psi | 65% | 2595 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,804 psi | 73% | 2631 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,804 psi | 73% | 2631 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,732 psi | 75% | 2648 fps | 100% |
| Hodgdon Retumbo | 87.8 gr | 80% | 31,763 psi | 50% | 2503 fps | 96.8% |
| Hodgdon Retumbo | 87.8 gr | 80% | 31,763 psi | 50% | 2503 fps | 96.8% |
| Hodgdon Retumbo | 87.8 gr | 80% | 32,445 psi | 51% | 2526 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 44% | 1588 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 44% | 1588 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,050 psi | 44% | 1594 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,965 psi | 77% | 2687 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,965 psi | 77% | 2687 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,893 psi | 78% | 2707 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,994 psi | 77% | 2690 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,994 psi | 77% | 2690 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 50,053 psi | 78% | 2710 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,496 psi | 67% | 2582 fps | 97.7% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,496 psi | 67% | 2582 fps | 97.7% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,337 psi | 68% | 2605 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 37,275 psi | 58% | 2569 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 80% | 37,275 psi | 58% | 2569 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 80% | 38,029 psi | 60% | 2589 fps | 97.2% |
| IMR 8133 Enduron | <<locked>> | 90% | 32,822 psi | 51% | 2497 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 90% | 32,822 psi | 51% | 2497 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 90% | 33,692 psi | 53% | 2520 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 52,373 psi | 82% | 2713 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 52,373 psi | 82% | 2713 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 53,214 psi | 83% | 2733 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,894 psi | 80% | 2717 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,894 psi | 80% | 2717 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,735 psi | 81% | 2733 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,286 psi | 52% | 2395 fps | 98.8% |
| Lovex S071 | <<locked>> | 80% | 33,286 psi | 52% | 2395 fps | 98.8% |
| Lovex S071 | <<locked>> | 80% | 34,069 psi | 53% | 2418 fps | 99.1% |
| Norma 204 | <<locked>> | 80% | 49,545 psi | 78% | 2736 fps | 99.7% |
| Norma 204 | <<locked>> | 80% | 49,545 psi | 78% | 2736 fps | 99.7% |
| Norma 204 | <<locked>> | 80% | 50,502 psi | 79% | 2759 fps | 99.8% |
| Norma 217 | <<locked>> | 86% | 28,645 psi | 45% | 2402 fps | 95.9% |
| Norma 217 | <<locked>> | 86% | 28,645 psi | 45% | 2402 fps | 95.9% |
| Norma 217 | <<locked>> | 84% | 27,441 psi | 43% | 2365 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 41,205 psi | 65% | 2661 fps | 99.6% |
| Norma MRP | <<locked>> | 80% | 41,205 psi | 65% | 2661 fps | 99.6% |
| Norma MRP | <<locked>> | 80% | 42,163 psi | 66% | 2680 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 50,618 psi | 79% | 2733 fps | 100% |
| Norma URP | <<locked>> | 80% | 50,618 psi | 79% | 2733 fps | 100% |
| Norma URP | <<locked>> | 80% | 51,503 psi | 81% | 2749 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,970 psi | 58% | 2572 fps | 97.1% |
| Ramshot Grand | <<locked>> | 80% | 36,970 psi | 58% | 2572 fps | 97.1% |
| Ramshot Grand | <<locked>> | 80% | 37,855 psi | 59% | 2595 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 80% | 49,501 psi | 78% | 2740 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 49,501 psi | 78% | 2740 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 50,473 psi | 79% | 2756 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,837 psi | 51% | 2454 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 80% | 32,837 psi | 51% | 2454 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 80% | 33,765 psi | 53% | 2477 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,674 psi | 45% | 1624 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,674 psi | 45% | 1624 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,776 psi | 45% | 1634 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,025 psi | 82% | 2772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,025 psi | 82% | 2772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,084 psi | 83% | 2789 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,560 psi | 79% | 2795 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,560 psi | 79% | 2795 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,590 psi | 81% | 2815 fps | 100% |
| ReloadSwiss RS 76 | 94 gr | 80% | 30,705 psi | 48% | 2474 fps | 97.6% |
| ReloadSwiss RS 76 | 94 gr | 80% | 30,705 psi | 48% | 2474 fps | 97.6% |
| ReloadSwiss RS 76 | 94 gr | 80% | 31,502 psi | 49% | 2497 fps | 98% |
| ReloadSwiss RS 80 | 104.2 gr | 88% | 37,420 psi | 59% | 2621 fps | 95.9% |
| ReloadSwiss RS 80 | 104.2 gr | 88% | 37,420 psi | 59% | 2621 fps | 95.9% |
| ReloadSwiss RS 80 | 101.8 gr | 86% | 35,665 psi | 56% | 2579 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 44,309 psi | 69% | 2621 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 80% | 44,309 psi | 69% | 2621 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 80% | 45,092 psi | 71% | 2644 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 42,540 psi | 67% | 2628 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 80% | 42,540 psi | 67% | 2628 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 80% | 43,526 psi | 68% | 2648 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 80% | 53,563 psi | 84% | 2749 fps | 100% |
| Rottweil R 907 | <<locked>> | 80% | 53,563 psi | 84% | 2749 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,373 psi | 82% | 2713 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,373 psi | 82% | 2713 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,214 psi | 83% | 2733 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,894 psi | 80% | 2717 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,894 psi | 80% | 2717 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,735 psi | 81% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,314 psi | 80% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,314 psi | 80% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,098 psi | 82% | 2687 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,221 psi | 66% | 2625 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,221 psi | 66% | 2625 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,192 psi | 68% | 2644 fps | 99.2% |
| Somchem S361 | <<locked>> | 80% | 45,063 psi | 71% | 2612 fps | 98.1% |
| Somchem S361 | <<locked>> | 80% | 45,063 psi | 71% | 2612 fps | 98.1% |
| Somchem S361 | <<locked>> | 80% | 45,847 psi | 72% | 2631 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 47,935 psi | 75% | 2684 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 47,935 psi | 75% | 2684 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 49,081 psi | 77% | 2703 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,975 psi | 67% | 2605 fps | 99.6% |
| Somchem S385 | <<locked>> | 80% | 42,975 psi | 67% | 2605 fps | 99.6% |
| Somchem S385 | <<locked>> | 80% | 43,874 psi | 69% | 2625 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 52,040 psi | 82% | 2723 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 52,040 psi | 82% | 2723 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 52,939 psi | 83% | 2740 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,405 psi | 59% | 2487 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 80% | 37,405 psi | 59% | 2487 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 80% | 38,159 psi | 60% | 2503 fps | 98.7% |
| Vihtavuori N170 | <<locked>> | 94% | 51,111 psi | 80% | 2766 fps | 95.9% |
| Vihtavuori N170 | <<locked>> | 94% | 51,111 psi | 80% | 2766 fps | 95.9% |
| Vihtavuori N170 | <<locked>> | 92% | 48,704 psi | 76% | 2726 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 51,169 psi | 80% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 51,169 psi | 80% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 52,141 psi | 82% | 2743 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,018 psi | 66% | 2612 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,018 psi | 66% | 2612 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,931 psi | 67% | 2628 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,147 psi | 64% | 2654 fps | 97.4% |
| Vihtavuori N560 | <<locked>> | 80% | 41,147 psi | 64% | 2654 fps | 97.4% |
| Vihtavuori N560 | <<locked>> | 80% | 42,061 psi | 66% | 2674 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 80% | 33,663 psi | 53% | 2470 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 80% | 33,663 psi | 53% | 2470 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 80% | 34,519 psi | 54% | 2493 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 88% | 38,972 psi | 61% | 2641 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 88% | 38,972 psi | 61% | 2641 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 86% | 37,173 psi | 58% | 2602 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 94% | 45,905 psi | 72% | 2818 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 94% | 45,905 psi | 72% | 2818 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 92% | 43,787 psi | 69% | 2776 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,300 psi | 80% | 2677 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,300 psi | 80% | 2677 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,330 psi | 82% | 2694 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,577 psi | 84% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,577 psi | 84% | 2805 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,882 psi | 55% | 2585 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,882 psi | 55% | 2585 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,998 psi | 56% | 2608 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,407 psi | 62% | 2536 fps | 98.4% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,407 psi | 62% | 2536 fps | 98.4% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,277 psi | 63% | 2559 fps | 98.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 213 powders for .338-378 Weath. Mag. loaded with the .338 | 248gr | Peregrine Plainsmaster (VLR-4). Hodgdon Retumbo delivers the highest muzzle velocity at 3,018 fps; across all powders the maximum-charge window runs from 1,775 fps to 3,018 fps. ADI AR 2217 gives the best case fill at 100 %, and 213 of the 213 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 248.0 gr projectile in 0.338" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2217, ADI AR 2218 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Hodgdon Retumbo, ReloadSwiss RS 76, ReloadSwiss RS 80 rank at the top here: for .338-378 Weath. Mag. with the .338 | 248gr | Peregrine Plainsmaster (VLR-4) they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.