Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:180 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 Weath. Mag. load data
Case Length (l3):2.824"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:98.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.0
Load data in caliber .300 Weath. Mag. with .308 | 180gr | Peregrine Bushmaster (VRG-3) bullet and 166 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 57,711 psi | 90% | 2874 fps | 99.5% |
| Accurate 2700 | <<locked>> | 82% | 57,363 psi | 90% | 2867 fps | 99.5% |
| Accurate 3100 | <<locked>> | 98% | 57,116 psi | 90% | 2927 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 57,072 psi | 89% | 2923 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,101 psi | 89% | 2841 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,942 psi | 89% | 2838 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,969 psi | 86% | 2910 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,868 psi | 86% | 2907 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,679 psi | 86% | 3012 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 96% | 55,883 psi | 88% | 3018 fps | 97.2% |
| Accurate MAGPRO | <<locked>> | 96% | 55,782 psi | 87% | 3015 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 84% | 57,130 psi | 90% | 2881 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 56,753 psi | 89% | 2877 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,159 psi | 88% | 2966 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 56,043 psi | 88% | 2966 fps | 99% |
| ADI AR 2213 | <<locked>> | 98% | 57,740 psi | 90% | 3028 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 98% | 57,421 psi | 90% | 3022 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,610 psi | 62% | 2733 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,378 psi | 62% | 2730 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,202 psi | 88% | 2959 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,476 psi | 85% | 2851 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,360 psi | 85% | 2848 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,318 psi | 88% | 2972 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,941 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,435 psi | 90% | 2986 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,334 psi | 90% | 2986 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,535 psi | 87% | 2953 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,434 psi | 87% | 2949 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,246 psi | 90% | 3018 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,942 psi | 89% | 3012 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,418 psi | 85% | 2940 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,099 psi | 85% | 2933 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,140 psi | 79% | 2933 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,850 psi | 78% | 2930 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,621 psi | 86% | 3025 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,273 psi | 85% | 3018 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 3002 fps | 99.1% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,796 psi | 87% | 2995 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 55,448 psi | 87% | 2867 fps | 100% |
| Bofors RP3 | <<locked>> | 82% | 55,085 psi | 86% | 2861 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,064 psi | 72% | 2854 fps | 96.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,788 psi | 72% | 2851 fps | 96.6% |
| Bofors RP5 | <<locked>> | 98% | 57,246 psi | 90% | 3018 fps | 99.3% |
| Bofors RP5 | <<locked>> | 98% | 56,942 psi | 89% | 3012 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 54,636 psi | 86% | 2861 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 54,491 psi | 85% | 2858 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,588 psi | 78% | 2884 fps | 97.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 2877 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 82% | 55,622 psi | 87% | 2887 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 55,492 psi | 87% | 2884 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,188 psi | 90% | 2969 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 57,101 psi | 89% | 2966 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 56,594 psi | 89% | 2930 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 86% | 56,246 psi | 88% | 2923 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 96% | 57,653 psi | 90% | 2963 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 96% | 57,595 psi | 90% | 2963 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,492 psi | 89% | 2946 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,420 psi | 88% | 2943 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,536 psi | 89% | 2894 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,188 psi | 88% | 2887 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,095 psi | 77% | 2986 fps | 98.9% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,849 psi | 77% | 2979 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 53,882 psi | 84% | 2946 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 88% | 57,711 psi | 90% | 3005 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 57% | 1814 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,782 psi | 58% | 1818 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,507 psi | 89% | 2864 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,333 psi | 88% | 2861 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,159 psi | 88% | 2904 fps | 99.5% |
| IMR 4350 | <<locked>> | 90% | 55,854 psi | 88% | 2894 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,376 psi | 88% | 2890 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,057 psi | 88% | 2884 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 55,593 psi | 87% | 2907 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 55,448 psi | 87% | 2900 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,201 psi | 87% | 2894 fps | 97.6% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,114 psi | 86% | 2887 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 55,317 psi | 87% | 3002 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 98% | 54,998 psi | 86% | 2995 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 56,623 psi | 89% | 2851 fps | 100% |
| Lovex S062 | <<locked>> | 82% | 56,463 psi | 88% | 2848 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,608 psi | 89% | 2884 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,492 psi | 89% | 2884 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,665 psi | 86% | 2877 fps | 99.7% |
| Lovex S070 | <<locked>> | 88% | 54,346 psi | 85% | 2871 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,749 psi | 80% | 2828 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 2825 fps | 99.7% |
| Norma 203B | <<locked>> | 82% | 57,464 psi | 90% | 2910 fps | 100% |
| Norma 203B | <<locked>> | 82% | 57,305 psi | 90% | 2907 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,188 psi | 90% | 2959 fps | 99% |
| Norma 204 | <<locked>> | 90% | 56,898 psi | 89% | 2949 fps | 99% |
| Norma MRP | <<locked>> | 96% | 57,101 psi | 89% | 3045 fps | 99.8% |
| Norma MRP | <<locked>> | 96% | 56,782 psi | 89% | 3038 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 57,493 psi | 90% | 2953 fps | 100% |
| Norma URP | <<locked>> | 90% | 57,145 psi | 90% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,912 psi | 88% | 3022 fps | 98.6% |
| Ramshot Grand | <<locked>> | 98% | 55,593 psi | 87% | 3015 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 56,376 psi | 88% | 2956 fps | 100% |
| Ramshot Hunter | <<locked>> | 90% | 56,086 psi | 88% | 2949 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,012 psi | 85% | 2953 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,693 psi | 84% | 2949 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,478 psi | 59% | 1860 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,449 psi | 59% | 1857 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,347 psi | 87% | 2874 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,245 psi | 87% | 2871 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,956 psi | 89% | 2976 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,826 psi | 89% | 2972 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,230 psi | 87% | 2936 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,897 psi | 86% | 2930 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,667 psi | 90% | 3025 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,348 psi | 90% | 3018 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,487 psi | 78% | 2986 fps | 99.6% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,211 psi | 77% | 2979 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 55,521 psi | 87% | 2864 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 55,405 psi | 87% | 2861 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,725 psi | 90% | 2940 fps | 98.4% |
| Rottweil R 904 | <<locked>> | 94% | 57,392 psi | 90% | 2930 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 94% | 55,071 psi | 86% | 2943 fps | 99% |
| Rottweil R 905 | <<locked>> | 94% | 54,752 psi | 86% | 2936 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 54,636 psi | 86% | 2861 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 86% | 54,491 psi | 85% | 2858 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,608 psi | 89% | 2884 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,492 psi | 89% | 2884 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,623 psi | 89% | 2851 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,463 psi | 88% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,665 psi | 86% | 2877 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 54,346 psi | 85% | 2871 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,363 psi | 90% | 2927 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,261 psi | 90% | 2923 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,970 psi | 88% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,840 psi | 88% | 2740 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,014 psi | 88% | 2838 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,927 psi | 88% | 2838 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,621 psi | 86% | 2936 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,302 psi | 85% | 2930 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 55,492 psi | 87% | 2861 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 55,317 psi | 87% | 2858 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,579 psi | 87% | 2871 fps | 97.4% |
| Somchem S361 | <<locked>> | 92% | 55,521 psi | 87% | 2871 fps | 97.4% |
| Somchem S365 | <<locked>> | 92% | 57,522 psi | 90% | 2953 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 57,435 psi | 90% | 2949 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,521 psi | 87% | 2913 fps | 99.5% |
| Somchem S385 | <<locked>> | 94% | 55,187 psi | 86% | 2910 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 56,666 psi | 89% | 2835 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 56,565 psi | 89% | 2831 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,666 psi | 87% | 2890 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,550 psi | 87% | 2887 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,955 psi | 86% | 2890 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 98% | 54,897 psi | 86% | 2890 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 57,450 psi | 90% | 2831 fps | 100% |
| Vihtavuori N540 | <<locked>> | 82% | 57,319 psi | 90% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,839 psi | 86% | 2894 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,737 psi | 86% | 2894 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,492 psi | 89% | 2963 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,391 psi | 88% | 2959 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,116 psi | 90% | 3038 fps | 98% |
| Vihtavuori N560 | <<locked>> | 96% | 56,768 psi | 89% | 3028 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,562 psi | 82% | 2943 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,228 psi | 82% | 2940 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,376 psi | 87% | 2851 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,274 psi | 87% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,406 psi | 90% | 2972 fps | 99.8% |
| Winchester 760 | <<locked>> | 88% | 57,334 psi | 90% | 2969 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,129 psi | 86% | 3071 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,737 psi | 86% | 3064 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,695 psi | 87% | 2910 fps | 98.9% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,405 psi | 87% | 2907 fps | 98.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 53,795 psi | 84% | 2812 fps | 99.2% |
| Accurate 2700 | <<locked>> | 80% | 53,650 psi | 84% | 2808 fps | 99.1% |
| Accurate 3100 | <<locked>> | 82% | 32,750 psi | 51% | 2464 fps | 95.8% |
| Accurate 3100 | <<locked>> | 82% | 32,605 psi | 51% | 2461 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 53,548 psi | 84% | 2792 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 53,403 psi | 84% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,640 psi | 65% | 2680 fps | 99.5% |
| Accurate 4350 | <<locked>> | 80% | 41,495 psi | 65% | 2677 fps | 99.5% |
| Accurate High Country | <<locked>> | 88% | 44,135 psi | 69% | 2815 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 92% | 48,515 psi | 76% | 2890 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 92% | 48,225 psi | 76% | 2884 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 50,357 psi | 79% | 2779 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 50,241 psi | 79% | 2776 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,147 psi | 63% | 2667 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 84% | 40,045 psi | 63% | 2664 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 90% | 43,888 psi | 69% | 2772 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 90% | 43,613 psi | 68% | 2766 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 96% | 34,722 psi | 54% | 2608 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 34,650 psi | 54% | 2602 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 40,393 psi | 63% | 2667 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,126 psi | 80% | 2799 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,995 psi | 80% | 2795 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,306 psi | 63% | 2694 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,176 psi | 63% | 2687 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,383 psi | 73% | 2815 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,224 psi | 72% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,074 psi | 63% | 2661 fps | 95.6% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,987 psi | 63% | 2657 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,567 psi | 64% | 2713 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,451 psi | 63% | 2710 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,573 psi | 46% | 2441 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,472 psi | 46% | 2438 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,473 psi | 49% | 2513 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,386 psi | 49% | 2510 fps | 95.8% |
| Alliant Reloder-26 | 70.1 gr | 80% | 31,923 psi | 50% | 2562 fps | 96.9% |
| Alliant Reloder-26 | 70.1 gr | 80% | 31,836 psi | 50% | 2559 fps | 96.8% |
| Bofors RP15 | <<locked>> | 90% | 40,176 psi | 63% | 2703 fps | 95.6% |
| Bofors RP15 | <<locked>> | 90% | 39,900 psi | 63% | 2694 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 51,735 psi | 81% | 2812 fps | 100% |
| Bofors RP3 | <<locked>> | 80% | 51,619 psi | 81% | 2808 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,873 psi | 67% | 2792 fps | 95.8% |
| Bofors RP30 | <<locked>> | 98% | 42,757 psi | 67% | 2789 fps | 95.7% |
| Bofors RP5 | <<locked>> | 88% | 40,567 psi | 64% | 2713 fps | 95.9% |
| Bofors RP5 | <<locked>> | 88% | 40,451 psi | 63% | 2710 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 45,107 psi | 71% | 2694 fps | 98% |
| Bofors RP7 | <<locked>> | 80% | 44,991 psi | 71% | 2690 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 43,134 psi | 68% | 2753 fps | 95.9% |
| Hodgdon H1000 | <<locked>> | 96% | 42,902 psi | 67% | 2749 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 51,967 psi | 81% | 2828 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 51,851 psi | 81% | 2825 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,656 psi | 68% | 2733 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 80% | 43,511 psi | 68% | 2726 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 46,441 psi | 73% | 2753 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 46,325 psi | 73% | 2749 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 90% | 47,079 psi | 74% | 2785 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 90% | 46,775 psi | 73% | 2776 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,079 psi | 72% | 2766 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,818 psi | 72% | 2759 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,869 psi | 59% | 2579 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,739 psi | 59% | 2575 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,492 psi | 59% | 2717 fps | 95.1% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,420 psi | 59% | 2713 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 42,844 psi | 67% | 2749 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 80% | 42,714 psi | 67% | 2746 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 43% | 1621 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 43% | 1624 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,982 psi | 83% | 2812 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,852 psi | 83% | 2808 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,640 psi | 64% | 2621 fps | 96.9% |
| IMR 4350 | <<locked>> | 80% | 40,538 psi | 64% | 2615 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,586 psi | 73% | 2723 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,485 psi | 73% | 2720 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 39,914 psi | 63% | 2631 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 39,784 psi | 62% | 2628 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,759 psi | 72% | 2726 fps | 95.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,469 psi | 71% | 2717 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 92% | 44,875 psi | 70% | 2808 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 92% | 44,773 psi | 70% | 2805 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 53,171 psi | 83% | 2802 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 53,026 psi | 83% | 2799 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,019 psi | 69% | 2671 fps | 99.1% |
| Lovex S065 | <<locked>> | 80% | 43,903 psi | 69% | 2667 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 42,264 psi | 66% | 2654 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 42,148 psi | 66% | 2651 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 32,024 psi | 50% | 2444 fps | 95.5% |
| Lovex S071 | <<locked>> | 86% | 31,923 psi | 50% | 2441 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 53,940 psi | 85% | 2858 fps | 100% |
| Norma 203B | <<locked>> | 80% | 53,809 psi | 84% | 2854 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,364 psi | 63% | 2651 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 40,277 psi | 63% | 2648 fps | 95.4% |
| Norma MRP | 69.7 gr | 82% | 34,548 psi | 54% | 2598 fps | 95.1% |
| Norma MRP | 71.4 gr | 84% | 36,811 psi | 58% | 2654 fps | 96% |
| Norma URP | <<locked>> | 80% | 41,278 psi | 65% | 2674 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 41,118 psi | 64% | 2671 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 44,759 psi | 70% | 2818 fps | 96.1% |
| Ramshot Grand | <<locked>> | 92% | 44,657 psi | 70% | 2815 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 40,059 psi | 63% | 2661 fps | 98% |
| Ramshot Hunter | <<locked>> | 80% | 39,958 psi | 63% | 2657 fps | 98% |
| Ramshot Magnum | <<locked>> | 90% | 37,057 psi | 58% | 2625 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 90% | 36,811 psi | 58% | 2618 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,021 psi | 44% | 1663 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,963 psi | 44% | 1660 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,808 psi | 81% | 2815 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,706 psi | 81% | 2812 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,269 psi | 77% | 2864 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,139 psi | 77% | 2861 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,568 psi | 65% | 2700 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,466 psi | 65% | 2697 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,176 psi | 63% | 2713 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,900 psi | 63% | 2707 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,796 psi | 58% | 2697 fps | 96.2% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,738 psi | 58% | 2694 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 48,747 psi | 76% | 2759 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 48,602 psi | 76% | 2756 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,440 psi | 70% | 2707 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 86% | 44,353 psi | 70% | 2703 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 84% | 39,262 psi | 62% | 2644 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 84% | 38,972 psi | 61% | 2638 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 45,107 psi | 71% | 2694 fps | 98% |
| Rottweil R 907 | <<locked>> | 80% | 44,991 psi | 71% | 2690 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,019 psi | 69% | 2671 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,903 psi | 69% | 2667 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 53,171 psi | 83% | 2802 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 53,026 psi | 83% | 2799 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,264 psi | 66% | 2654 fps | 98% |
| Shooters World SW4350 | <<locked>> | 80% | 42,148 psi | 66% | 2651 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,154 psi | 79% | 2818 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,024 psi | 78% | 2815 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,400 psi | 77% | 2651 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,472 psi | 78% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,946 psi | 67% | 2615 fps | 98% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,844 psi | 67% | 2612 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,914 psi | 61% | 2641 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,624 psi | 61% | 2631 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 48,849 psi | 77% | 2756 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 48,704 psi | 76% | 2756 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,426 psi | 71% | 2697 fps | 95% |
| Somchem S361 | <<locked>> | 86% | 45,353 psi | 71% | 2694 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 37,840 psi | 59% | 2625 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 37,710 psi | 59% | 2625 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,159 psi | 58% | 2569 fps | 95.7% |
| Somchem S385 | <<locked>> | 82% | 36,898 psi | 58% | 2562 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 46,731 psi | 73% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 46,572 psi | 73% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,685 psi | 67% | 2674 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 42,569 psi | 67% | 2667 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 36,709 psi | 58% | 2552 fps | 95.1% |
| Vihtavuori N165 | <<locked>> | 86% | 36,579 psi | 57% | 2549 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 53,795 psi | 84% | 2782 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 53,679 psi | 84% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,003 psi | 66% | 2671 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 80% | 41,887 psi | 66% | 2667 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 32,982 psi | 52% | 2516 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 32,851 psi | 51% | 2513 fps | 98% |
| Vihtavuori N560 | 76.5 gr | 90% | 46,238 psi | 72% | 2844 fps | 95.6% |
| Vihtavuori N560 | 76.5 gr | 90% | 45,977 psi | 72% | 2838 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 96% | 45,614 psi | 71% | 2818 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 96% | 45,527 psi | 71% | 2815 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,814 psi | 66% | 2638 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,727 psi | 65% | 2635 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,816 psi | 69% | 2736 fps | 98.2% |
| Winchester 760 | <<locked>> | 80% | 43,700 psi | 68% | 2733 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,020 psi | 41% | 2421 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,918 psi | 41% | 2415 fps | 97.4% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,059 psi | 61% | 2608 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,943 psi | 61% | 2605 fps | 95.1% |
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 166 powders for .300 Weath. Mag. loaded with the .308 | 180gr | Peregrine Bushmaster (VRG-3). Winchester StaBALL HD delivers the highest muzzle velocity at 3,071 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,071 fps. ADI AR 2225 gives the best case fill at 100 %, and 166 of the 166 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, ADI AR 2225, Alliant Reloder-25 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Weath. Mag. with the .308 | 180gr | Peregrine Bushmaster (VRG-3) 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.