Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:185 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:1:11.0
Load data in caliber .300 Weath. Mag. with .308 | 185gr | Berger Hybrid Target bullet and 160 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 3100 | <<locked>> | 96% | 54,041 psi | 85% | 2835 fps | 99.9% |
| Accurate 3100 | <<locked>> | 96% | 54,752 psi | 86% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,825 psi | 87% | 2874 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 56,434 psi | 88% | 2884 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 56,173 psi | 88% | 2995 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 96% | 56,304 psi | 88% | 2982 fps | 97.4% |
| Accurate MAGPRO | <<locked>> | 96% | 57,000 psi | 89% | 2992 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 84% | 57,450 psi | 90% | 2838 fps | 100% |
| ADI AR 2208 | <<locked>> | 82% | 54,491 psi | 85% | 2795 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,463 psi | 88% | 2927 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 57,188 psi | 90% | 2936 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 54,317 psi | 85% | 2927 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 96% | 54,737 psi | 86% | 2936 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,223 psi | 71% | 2749 fps | 96% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,774 psi | 72% | 2762 fps | 96.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,132 psi | 63% | 2707 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,611 psi | 64% | 2720 fps | 98% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 57,377 psi | 90% | 2933 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,172 psi | 86% | 2812 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,550 psi | 87% | 2818 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,507 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,116 psi | 90% | 2940 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,070 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,679 psi | 86% | 2904 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,912 psi | 88% | 2913 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,623 psi | 89% | 2923 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,682 psi | 90% | 2979 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,476 psi | 85% | 2933 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,723 psi | 86% | 2897 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,521 psi | 87% | 2910 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,662 psi | 79% | 2897 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,314 psi | 80% | 2910 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,013 psi | 86% | 2986 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,796 psi | 87% | 2999 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,318 psi | 88% | 2959 fps | 99.2% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,029 psi | 89% | 2969 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 56,202 psi | 88% | 2828 fps | 100% |
| Bofors RP3 | <<locked>> | 82% | 56,608 psi | 89% | 2838 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,514 psi | 73% | 2822 fps | 97% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,166 psi | 74% | 2835 fps | 97.2% |
| Bofors RP5 | <<locked>> | 98% | 57,682 psi | 90% | 2979 fps | 99.4% |
| Bofors RP5 | <<locked>> | 96% | 54,476 psi | 85% | 2933 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 55,274 psi | 87% | 2822 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 55,608 psi | 87% | 2831 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 2844 fps | 97.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,531 psi | 79% | 2858 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 82% | 56,304 psi | 88% | 2848 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 56,637 psi | 89% | 2858 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,638 psi | 90% | 2927 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 86% | 54,563 psi | 86% | 2881 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 57,014 psi | 89% | 2887 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 86% | 57,566 psi | 90% | 2897 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 54,186 psi | 85% | 2864 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 94% | 54,868 psi | 86% | 2877 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,000 psi | 89% | 2907 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,464 psi | 90% | 2917 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,927 psi | 89% | 2851 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,522 psi | 90% | 2861 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,501 psi | 78% | 2949 fps | 99.1% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,111 psi | 79% | 2963 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 86% | 54,114 psi | 85% | 2904 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 54,824 psi | 86% | 2917 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,941 psi | 58% | 1781 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 58% | 1785 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,000 psi | 89% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,363 psi | 90% | 2828 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,492 psi | 89% | 2858 fps | 99.6% |
| IMR 4350 | <<locked>> | 90% | 57,029 psi | 89% | 2871 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,666 psi | 89% | 2848 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,174 psi | 90% | 2858 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 56,101 psi | 88% | 2864 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 56,637 psi | 89% | 2874 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,535 psi | 87% | 2851 fps | 97.7% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,173 psi | 88% | 2864 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 98% | 55,434 psi | 87% | 2956 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 98% | 56,130 psi | 88% | 2969 fps | 98.4% |
| Lovex S062 | <<locked>> | 82% | 57,276 psi | 90% | 2812 fps | 100% |
| Lovex S062 | <<locked>> | 82% | 57,682 psi | 90% | 2818 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,130 psi | 90% | 2844 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,682 psi | 90% | 2854 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,071 psi | 86% | 2838 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 55,608 psi | 87% | 2848 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 2795 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,301 psi | 82% | 2812 fps | 99.9% |
| Norma 204 | <<locked>> | 90% | 57,508 psi | 90% | 2917 fps | 99.1% |
| Norma 204 | <<locked>> | 88% | 54,331 psi | 85% | 2867 fps | 98.8% |
| Norma MRP | <<locked>> | 96% | 57,363 psi | 90% | 3002 fps | 99.9% |
| Norma MRP | <<locked>> | 94% | 54,331 psi | 85% | 2956 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 54,230 psi | 85% | 2854 fps | 100% |
| Norma URP | <<locked>> | 88% | 54,810 psi | 86% | 2867 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,260 psi | 88% | 2979 fps | 98.7% |
| Ramshot Grand | <<locked>> | 98% | 56,942 psi | 89% | 2995 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 90% | 56,739 psi | 89% | 2913 fps | 100% |
| Ramshot Hunter | <<locked>> | 90% | 57,493 psi | 90% | 2930 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2913 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,042 psi | 86% | 2927 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,695 psi | 59% | 1824 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,594 psi | 59% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,999 psi | 88% | 2835 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,550 psi | 89% | 2844 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,435 psi | 90% | 2936 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,027 psi | 85% | 2890 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,695 psi | 87% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,434 psi | 88% | 2910 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,896 psi | 84% | 2923 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,621 psi | 86% | 2936 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,835 psi | 78% | 2946 fps | 99.7% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,575 psi | 79% | 2963 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 56,289 psi | 88% | 2825 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 56,942 psi | 89% | 2838 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,360 psi | 85% | 2838 fps | 98% |
| Rottweil R 904 | <<locked>> | 92% | 55,042 psi | 86% | 2851 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 94% | 55,463 psi | 87% | 2904 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 94% | 55,999 psi | 88% | 2913 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 55,274 psi | 87% | 2822 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 55,608 psi | 87% | 2831 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,130 psi | 90% | 2844 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,682 psi | 90% | 2854 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,276 psi | 90% | 2812 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,682 psi | 90% | 2818 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,071 psi | 86% | 2838 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 88% | 55,608 psi | 87% | 2848 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,244 psi | 85% | 2835 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,824 psi | 86% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,478 psi | 89% | 2703 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,058 psi | 89% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,666 psi | 89% | 2799 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,145 psi | 90% | 2808 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,013 psi | 86% | 2897 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,550 psi | 87% | 2907 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 56,043 psi | 88% | 2818 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 56,666 psi | 89% | 2831 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,985 psi | 88% | 2831 fps | 97.5% |
| Somchem S361 | <<locked>> | 92% | 56,594 psi | 89% | 2844 fps | 97.7% |
| Somchem S365 | <<locked>> | 90% | 54,317 psi | 85% | 2861 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 54,911 psi | 86% | 2871 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,115 psi | 88% | 2877 fps | 99.6% |
| Somchem S385 | <<locked>> | 94% | 56,579 psi | 89% | 2887 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 86% | 57,377 psi | 90% | 2792 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 54,360 psi | 85% | 2756 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,231 psi | 88% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,782 psi | 89% | 2861 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,405 psi | 87% | 2851 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 98% | 56,086 psi | 88% | 2864 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 55,347 psi | 87% | 2854 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,840 psi | 88% | 2864 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,130 psi | 90% | 2927 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,273 psi | 85% | 2884 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,334 psi | 90% | 2995 fps | 98.1% |
| Vihtavuori N560 | <<locked>> | 94% | 54,302 psi | 85% | 2946 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 2907 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,795 psi | 84% | 2923 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,767 psi | 87% | 2812 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,434 psi | 88% | 2825 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,230 psi | 85% | 2874 fps | 99.7% |
| Winchester 760 | <<locked>> | 86% | 54,795 psi | 86% | 2884 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,550 psi | 87% | 3031 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3045 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,086 psi | 88% | 2871 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,782 psi | 89% | 2887 fps | 99.2% |
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 3100 | <<locked>> | 80% | 31,546 psi | 49% | 2395 fps | 95.5% |
| Accurate 3100 | <<locked>> | 80% | 31,894 psi | 50% | 2405 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 42,569 psi | 67% | 2651 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 43,004 psi | 67% | 2664 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 42,482 psi | 67% | 2743 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 92% | 49,037 psi | 77% | 2854 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 90% | 46,108 psi | 72% | 2802 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 50,763 psi | 80% | 2736 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 51,140 psi | 80% | 2746 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,712 psi | 64% | 2635 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 82% | 38,580 psi | 60% | 2592 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 90% | 44,411 psi | 70% | 2743 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 90% | 44,831 psi | 70% | 2753 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 98% | 42,467 psi | 67% | 2690 fps | 95% |
| ADI AR 2217 | <<locked>> | 98% | 42,786 psi | 67% | 2700 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 35,288 psi | 55% | 2582 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 94% | 33,562 psi | 53% | 2536 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,769 psi | 61% | 2589 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,706 psi | 81% | 2759 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,344 psi | 82% | 2772 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,814 psi | 64% | 2657 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,379 psi | 65% | 2671 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,949 psi | 74% | 2779 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,369 psi | 74% | 2789 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,087 psi | 60% | 2572 fps | 95% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,406 psi | 60% | 2582 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,580 psi | 60% | 2625 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,059 psi | 61% | 2641 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,313 psi | 48% | 2425 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,618 psi | 48% | 2434 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,211 psi | 47% | 2434 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,472 psi | 48% | 2444 fps | 95.6% |
| Alliant Reloder-26 | 68.7 gr | 80% | 32,706 psi | 51% | 2543 fps | 97.4% |
| Alliant Reloder-26 | 68.7 gr | 80% | 33,141 psi | 52% | 2559 fps | 97.7% |
| Bofors RP15 | <<locked>> | 88% | 38,087 psi | 60% | 2615 fps | 95% |
| Bofors RP15 | <<locked>> | 88% | 38,566 psi | 60% | 2625 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 52,634 psi | 82% | 2776 fps | 100% |
| Bofors RP3 | <<locked>> | 80% | 53,069 psi | 83% | 2785 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,611 psi | 64% | 2703 fps | 95.2% |
| Bofors RP30 | <<locked>> | 96% | 41,191 psi | 65% | 2717 fps | 95.5% |
| Bofors RP5 | <<locked>> | 86% | 38,580 psi | 60% | 2625 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 39,059 psi | 61% | 2641 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 45,730 psi | 72% | 2661 fps | 98.2% |
| Bofors RP7 | <<locked>> | 80% | 46,093 psi | 72% | 2667 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 94% | 40,756 psi | 64% | 2657 fps | 95.2% |
| Hodgdon H1000 | <<locked>> | 94% | 41,104 psi | 64% | 2671 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 52,750 psi | 83% | 2795 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 53,142 psi | 83% | 2802 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,222 psi | 69% | 2697 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 80% | 44,759 psi | 70% | 2710 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 47,021 psi | 74% | 2717 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 80% | 47,384 psi | 74% | 2726 fps | 98% |
| Hodgdon H4831 | <<locked>> | 90% | 47,398 psi | 74% | 2746 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 88% | 44,773 psi | 70% | 2697 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,586 psi | 73% | 2733 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,065 psi | 74% | 2743 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,493 psi | 60% | 2549 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,870 psi | 61% | 2556 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,189 psi | 60% | 2694 fps | 95.7% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,566 psi | 60% | 2707 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 43,453 psi | 68% | 2717 fps | 98% |
| Hodgdon Superformance | <<locked>> | 80% | 43,961 psi | 69% | 2730 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 43% | 1588 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 43% | 1594 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,432 psi | 84% | 2769 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,838 psi | 84% | 2776 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,205 psi | 65% | 2589 fps | 97.2% |
| IMR 4350 | <<locked>> | 80% | 41,727 psi | 65% | 2602 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,065 psi | 74% | 2687 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,601 psi | 75% | 2697 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 40,669 psi | 64% | 2602 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 41,031 psi | 64% | 2612 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,093 psi | 72% | 2687 fps | 95.6% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,528 psi | 73% | 2697 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 90% | 42,482 psi | 67% | 2713 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 42,946 psi | 67% | 2726 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 53,969 psi | 85% | 2766 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 54,360 psi | 85% | 2772 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,701 psi | 70% | 2638 fps | 99.3% |
| Lovex S065 | <<locked>> | 80% | 45,034 psi | 71% | 2648 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 43,004 psi | 67% | 2625 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 43,337 psi | 68% | 2631 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 30,879 psi | 48% | 2375 fps | 95.2% |
| Lovex S071 | <<locked>> | 84% | 31,357 psi | 49% | 2388 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 40,944 psi | 64% | 2618 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 41,423 psi | 65% | 2631 fps | 96% |
| Norma MRP | 68.4 gr | 82% | 35,201 psi | 55% | 2575 fps | 95.6% |
| Norma MRP | 68.4 gr | 82% | 35,621 psi | 56% | 2585 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 41,945 psi | 66% | 2641 fps | 99.5% |
| Norma URP | <<locked>> | 80% | 42,322 psi | 66% | 2651 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 42,308 psi | 66% | 2723 fps | 95.4% |
| Ramshot Grand | <<locked>> | 90% | 42,714 psi | 67% | 2733 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 40,654 psi | 64% | 2631 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 80% | 41,176 psi | 65% | 2644 fps | 98.4% |
| Ramshot Magnum | <<locked>> | 90% | 37,579 psi | 59% | 2598 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 88% | 35,462 psi | 56% | 2549 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 44% | 1627 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,282 psi | 44% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,388 psi | 82% | 2776 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,924 psi | 83% | 2789 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,821 psi | 78% | 2825 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,256 psi | 79% | 2835 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,337 psi | 66% | 2671 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,888 psi | 67% | 2684 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,698 psi | 64% | 2684 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,205 psi | 65% | 2697 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,969 psi | 55% | 2605 fps | 95.5% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,433 psi | 56% | 2621 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 49,530 psi | 78% | 2726 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 49,951 psi | 78% | 2733 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,177 psi | 66% | 2615 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 84% | 42,641 psi | 67% | 2628 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 84% | 39,769 psi | 62% | 2615 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 82% | 37,652 psi | 59% | 2569 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 45,730 psi | 72% | 2661 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 80% | 46,093 psi | 72% | 2667 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,701 psi | 70% | 2638 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,034 psi | 71% | 2648 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 53,969 psi | 85% | 2766 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 54,360 psi | 85% | 2772 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,004 psi | 67% | 2625 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 80% | 43,337 psi | 68% | 2631 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,676 psi | 79% | 2779 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,242 psi | 80% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,937 psi | 78% | 2612 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,328 psi | 79% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,685 psi | 68% | 2585 fps | 98.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,164 psi | 69% | 2595 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,407 psi | 62% | 2608 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,304 psi | 58% | 2562 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 49,487 psi | 78% | 2720 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 49,908 psi | 78% | 2730 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,021 psi | 72% | 2664 fps | 95.3% |
| Somchem S361 | <<locked>> | 86% | 46,441 psi | 73% | 2674 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 38,580 psi | 60% | 2598 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 39,160 psi | 61% | 2612 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,505 psi | 56% | 2487 fps | 95.2% |
| Somchem S385 | <<locked>> | 80% | 35,795 psi | 56% | 2497 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 47,355 psi | 74% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 47,747 psi | 75% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,366 psi | 68% | 2641 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 43,743 psi | 69% | 2651 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 37,318 psi | 58% | 2523 fps | 95.5% |
| Vihtavuori N165 | <<locked>> | 86% | 37,753 psi | 59% | 2536 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 42,815 psi | 67% | 2641 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 80% | 43,149 psi | 68% | 2651 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,866 psi | 53% | 2497 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 34,403 psi | 54% | 2513 fps | 98.7% |
| Vihtavuori N560 | 75 gr | 90% | 46,702 psi | 73% | 2812 fps | 95.9% |
| Vihtavuori N560 | 73.4 gr | 88% | 44,179 psi | 69% | 2762 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 94% | 43,279 psi | 68% | 2730 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 43,743 psi | 69% | 2740 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,322 psi | 66% | 2605 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,772 psi | 67% | 2615 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,382 psi | 70% | 2700 fps | 98.4% |
| Winchester 760 | <<locked>> | 80% | 44,933 psi | 70% | 2713 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,818 psi | 42% | 2415 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,166 psi | 43% | 2428 fps | 98.4% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,711 psi | 62% | 2582 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,147 psi | 63% | 2592 fps | 95.8% |
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 160 powders for .300 Weath. Mag. loaded with the .308 | 185gr | Berger Hybrid Target. Winchester StaBALL HD delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,781 fps to 3,045 fps. ADI AR 2217 gives the best case fill at 100 %, and 160 of the 160 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2217, ADI AR 2225 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 | 185gr | Berger Hybrid Target 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.