Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 150gr | Peregrine Bushmaster (VRG-3) bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-17 and Winchester 760.
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.
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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 2495 | <<locked>> | 82% | 54,215 psi | 85% | 3009 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,014 psi | 88% | 3081 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 3117 fps | 99.2% |
| Accurate 4064 | <<locked>> | 84% | 54,723 psi | 86% | 3068 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,115 psi | 88% | 3179 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 55,506 psi | 87% | 3264 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 82% | 57,595 psi | 90% | 3156 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,317 psi | 87% | 3104 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,522 psi | 90% | 3225 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,071 psi | 86% | 3209 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,810 psi | 86% | 3232 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 57,464 psi | 90% | 3219 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,956 psi | 88% | 3127 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,173 psi | 88% | 3150 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,014 psi | 89% | 3241 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,520 psi | 85% | 3205 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,637 psi | 89% | 3209 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 3202 fps | 97.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,923 psi | 80% | 3136 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,077 psi | 69% | 3038 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,882 psi | 86% | 3284 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,371 psi | 77% | 3117 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 56,898 psi | 89% | 3143 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 3202 fps | 97.4% |
| Bofors RP7 | <<locked>> | 90% | 56,347 psi | 88% | 3127 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 86% | 57,421 psi | 90% | 3163 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,810 psi | 86% | 3173 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 88% | 54,433 psi | 85% | 3130 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,305 psi | 90% | 3159 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,969 psi | 86% | 3143 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 55,158 psi | 86% | 3209 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,143 psi | 57% | 1985 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,608 psi | 87% | 3110 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,752 psi | 86% | 3087 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,392 psi | 90% | 3123 fps | 99% |
| IMR 4350 | <<locked>> | 94% | 57,551 psi | 90% | 3159 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,592 psi | 86% | 3097 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 56,463 psi | 88% | 3166 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 57,667 psi | 90% | 3179 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,840 psi | 89% | 3146 fps | 96% |
| Lovex S060 | <<locked>> | 82% | 56,231 psi | 88% | 3074 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,708 psi | 86% | 3077 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,476 psi | 85% | 3091 fps | 99.4% |
| Lovex S070 | <<locked>> | 92% | 55,854 psi | 88% | 3136 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,469 psi | 70% | 2940 fps | 97.6% |
| Norma 201 | <<locked>> | 82% | 56,072 psi | 88% | 3094 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,797 psi | 89% | 3087 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,463 psi | 87% | 3133 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,810 psi | 86% | 3153 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3297 fps | 99.1% |
| Norma URP | <<locked>> | 92% | 54,723 psi | 86% | 3159 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 56,536 psi | 89% | 3163 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 57,450 psi | 90% | 3219 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,181 psi | 74% | 3051 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,840 psi | 58% | 2031 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,319 psi | 90% | 3143 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,479 psi | 90% | 3228 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,128 psi | 85% | 3202 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,231 psi | 88% | 3202 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,737 psi | 86% | 3228 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 56,652 psi | 89% | 3094 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,971 psi | 89% | 3140 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,361 psi | 87% | 3130 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 98% | 55,883 psi | 88% | 3192 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 56,347 psi | 88% | 3127 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,476 psi | 85% | 3091 fps | 99.4% |
| Shooters World Precision | <<locked>> | 84% | 54,708 psi | 86% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,854 psi | 88% | 3136 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,216 psi | 87% | 3146 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,028 psi | 88% | 3120 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,826 psi | 89% | 3022 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,549 psi | 85% | 2972 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,157 psi | 85% | 3041 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,405 psi | 87% | 3186 fps | 97.6% |
| Somchem S335 | <<locked>> | 82% | 56,594 psi | 89% | 3018 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,884 psi | 89% | 3136 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,348 psi | 90% | 3123 fps | 95.9% |
| Somchem S365 | <<locked>> | 94% | 54,143 psi | 85% | 3163 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,449 psi | 88% | 3166 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 82% | 57,421 psi | 90% | 3005 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,116 psi | 90% | 3051 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,638 psi | 90% | 3068 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,766 psi | 86% | 3054 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,087 psi | 89% | 3159 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,228 psi | 82% | 3074 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 84% | 55,811 psi | 87% | 3061 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,999 psi | 88% | 3156 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,724 psi | 89% | 3219 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 3284 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,101 psi | 89% | 3123 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,810 psi | 86% | 3173 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,919 psi | 72% | 3189 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,289 psi | 88% | 3130 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 3159 fps | 97.7% |
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 2495 | <<locked>> | 80% | 50,618 psi | 79% | 2953 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,979 psi | 77% | 2956 fps | 96.9% |
| Accurate 3100 | <<locked>> | 90% | 37,913 psi | 59% | 2795 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 47,964 psi | 75% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,593 psi | 57% | 2789 fps | 96.9% |
| Accurate High Country | <<locked>> | 96% | 51,547 psi | 81% | 3192 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 53,983 psi | 85% | 3097 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,745 psi | 72% | 2930 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 46,833 psi | 73% | 3025 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 98% | 51,401 psi | 81% | 3140 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,894 psi | 80% | 3163 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 47,108 psi | 74% | 3028 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,195 psi | 72% | 2956 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,414 psi | 77% | 3031 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,824 psi | 56% | 2802 fps | 97% |
| Alliant Reloder-17 | 70.6 gr | 80% | 40,872 psi | 64% | 2946 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 46,499 psi | 73% | 3015 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,963 psi | 74% | 3071 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,704 psi | 47% | 2641 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,158 psi | 57% | 2838 fps | 95.5% |
| Alliant Reloder-26 | 77.7 gr | 86% | 34,621 psi | 54% | 2838 fps | 95.7% |
| Bofors RP15 | <<locked>> | 98% | 46,079 psi | 72% | 3048 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 46,369 psi | 73% | 2966 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 46,963 psi | 74% | 3071 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 43,598 psi | 68% | 2881 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,775 psi | 73% | 2972 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 41,640 psi | 65% | 2910 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 82% | 44,657 psi | 70% | 2940 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,344 psi | 52% | 2690 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,416 psi | 81% | 3087 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,857 psi | 64% | 2920 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 42% | 1778 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,272 psi | 82% | 3054 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,109 psi | 75% | 2969 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,415 psi | 79% | 3002 fps | 97.9% |
| IMR 4350 | <<locked>> | 84% | 41,756 psi | 65% | 2858 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,424 psi | 66% | 2858 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 35,157 psi | 55% | 2736 fps | 96.5% |
| IMR 4895 | <<locked>> | 80% | 50,705 psi | 79% | 3064 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,229 psi | 83% | 3084 fps | 95.2% |
| Lovex S060 | <<locked>> | 80% | 52,750 psi | 83% | 3018 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,124 psi | 75% | 2966 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,668 psi | 62% | 2799 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 40,466 psi | 63% | 2831 fps | 95.6% |
| Lovex S071 | <<locked>> | 94% | 36,347 psi | 57% | 2759 fps | 95% |
| Norma 201 | <<locked>> | 80% | 52,475 psi | 82% | 3035 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,359 psi | 84% | 3038 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,776 psi | 76% | 3018 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 47,645 psi | 75% | 3018 fps | 95.5% |
| Norma MRP | <<locked>> | 90% | 40,176 psi | 63% | 2949 fps | 95% |
| Norma URP | <<locked>> | 80% | 36,477 psi | 57% | 2785 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 80% | 49,313 psi | 77% | 3041 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 38,058 psi | 60% | 2831 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 43,656 psi | 68% | 2976 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 43% | 1818 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,007 psi | 74% | 2959 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,635 psi | 84% | 3163 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,526 psi | 68% | 3012 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,477 psi | 57% | 2805 fps | 96.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,621 psi | 56% | 2808 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 50,038 psi | 78% | 2986 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,468 psi | 68% | 2904 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 51,764 psi | 81% | 3068 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 45,498 psi | 71% | 2999 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 43,598 psi | 68% | 2881 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,668 psi | 62% | 2799 fps | 96.6% |
| Shooters World Precision | <<locked>> | 80% | 48,124 psi | 75% | 2966 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,466 psi | 63% | 2831 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,020 psi | 71% | 2963 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,547 psi | 82% | 3064 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,345 psi | 84% | 2969 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,049 psi | 71% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,568 psi | 65% | 2795 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 45,092 psi | 71% | 2989 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 53,098 psi | 83% | 2966 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,932 psi | 69% | 2907 fps | 99.7% |
| Somchem S361 | <<locked>> | 94% | 53,563 psi | 84% | 3058 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 32,924 psi | 52% | 2733 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 43,076 psi | 68% | 2913 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 53,940 psi | 85% | 2953 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,212 psi | 79% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,517 psi | 79% | 2959 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,930 psi | 66% | 2828 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 38,014 psi | 60% | 2792 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 45,484 psi | 71% | 2949 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 48,820 psi | 77% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,376 psi | 59% | 2785 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 30,632 psi | 48% | 2661 fps | 95.1% |
| Vihtavuori N560 | <<locked>> | 98% | 53,896 psi | 84% | 3215 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,304 psi | 58% | 2762 fps | 99% |
| Winchester 760 | 70.8 gr | 82% | 41,640 psi | 65% | 2910 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 86% | 28,123 psi | 44% | 2671 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,504 psi | 82% | 3068 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,977 psi | 72% | 2963 fps | 95.2% |
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 94 powders for .300 Weath. Mag. loaded with the .308 | 150gr | Peregrine Bushmaster (VRG-3). Norma MRP delivers the highest muzzle velocity at 3,297 fps; across all powders the maximum-charge window runs from 1,985 fps to 3,297 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 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 150.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Alliant Reloder-17, Winchester 760 rank at the top here: for .300 Weath. Mag. with the .308 | 150gr | 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.