Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 150gr | Peregrine VLR-4 bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Ramshot Hunter.
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 2495 | <<locked>> | 84% | 55,782 psi | 87% | 3028 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,331 psi | 85% | 3045 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,517 psi | 81% | 3068 fps | 98.7% |
| Accurate 4064 | <<locked>> | 86% | 56,275 psi | 88% | 3087 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,679 psi | 84% | 3133 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 55,796 psi | 87% | 3120 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,159 psi | 90% | 3127 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,317 psi | 87% | 3179 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,666 psi | 89% | 3258 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,172 psi | 85% | 3094 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,404 psi | 85% | 3114 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,926 psi | 86% | 3202 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,289 psi | 88% | 3232 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,476 psi | 85% | 3163 fps | 97.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 3153 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,631 psi | 76% | 3094 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,322 psi | 66% | 2992 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 3301 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,014 psi | 88% | 3140 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 54,897 psi | 86% | 3110 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 3153 fps | 96.7% |
| Bofors RP7 | <<locked>> | 90% | 54,665 psi | 86% | 3091 fps | 98% |
| Hodgdon H380 | <<locked>> | 86% | 55,564 psi | 87% | 3127 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 56,391 psi | 88% | 3192 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 90% | 56,202 psi | 88% | 3153 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 82% | 56,420 psi | 88% | 3130 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,998 psi | 86% | 3120 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,942 psi | 89% | 3169 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,101 psi | 89% | 3235 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 56% | 1969 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,624 psi | 90% | 3133 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,159 psi | 90% | 3110 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,492 psi | 89% | 3110 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,811 psi | 87% | 3087 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 55,535 psi | 87% | 3120 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,304 psi | 88% | 3120 fps | 98.6% |
| IMR 4831 | <<locked>> | 94% | 54,462 psi | 85% | 3130 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 55,854 psi | 88% | 3146 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,028 psi | 88% | 3091 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,708 psi | 86% | 3041 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,652 psi | 89% | 3100 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,173 psi | 88% | 3114 fps | 99.5% |
| Lovex S070 | <<locked>> | 94% | 57,508 psi | 90% | 3156 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,496 psi | 67% | 2897 fps | 96.9% |
| Norma 201 | <<locked>> | 82% | 54,418 psi | 85% | 3061 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,085 psi | 86% | 3058 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,450 psi | 90% | 3159 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,695 psi | 89% | 3176 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 55,056 psi | 86% | 3251 fps | 98.6% |
| Norma URP | <<locked>> | 94% | 56,304 psi | 88% | 3179 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 54,679 psi | 86% | 3127 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,376 psi | 87% | 3179 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 57% | 2014 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,637 psi | 87% | 3110 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,463 psi | 87% | 3189 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,782 psi | 87% | 3225 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,809 psi | 84% | 3159 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,376 psi | 88% | 3251 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 55,056 psi | 86% | 3061 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,955 psi | 86% | 3104 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,029 psi | 89% | 3150 fps | 96.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,319 psi | 90% | 3209 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 54,665 psi | 86% | 3091 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,173 psi | 88% | 3114 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,028 psi | 88% | 3091 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,652 psi | 89% | 3100 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,508 psi | 90% | 3156 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,898 psi | 89% | 3169 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,232 psi | 90% | 3123 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,389 psi | 85% | 3091 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,361 psi | 87% | 2992 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,362 psi | 88% | 2995 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,130 psi | 88% | 3061 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,811 psi | 89% | 3205 fps | 97.7% |
| Somchem S335 | <<locked>> | 82% | 55,056 psi | 86% | 2989 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,956 psi | 89% | 3114 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,955 psi | 86% | 3100 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,637 psi | 87% | 3186 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,302 psi | 85% | 3120 fps | 98% |
| Vihtavuori N133 | <<locked>> | 82% | 55,927 psi | 88% | 2976 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,259 psi | 87% | 3022 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,854 psi | 88% | 3038 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,507 psi | 89% | 3077 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,853 psi | 86% | 3117 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 3031 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 86% | 57,696 psi | 90% | 3084 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,711 psi | 90% | 3179 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,462 psi | 85% | 3182 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,810 psi | 86% | 3087 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,652 psi | 89% | 3199 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,830 psi | 69% | 3136 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,389 psi | 85% | 3094 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,679 psi | 86% | 3117 fps | 97.1% |
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% | 48,979 psi | 77% | 2927 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,471 psi | 74% | 2920 fps | 96.3% |
| Accurate 3100 | <<locked>> | 92% | 38,798 psi | 61% | 2815 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 46,427 psi | 73% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,070 psi | 55% | 2749 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 52,359 psi | 82% | 3064 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,440 psi | 70% | 2897 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 48,254 psi | 76% | 3048 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,907 psi | 77% | 3120 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,628 psi | 70% | 2920 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,819 psi | 75% | 2995 fps | 99.6% |
| Alliant Reloder-16 | 63.4 gr | 80% | 34,635 psi | 54% | 2766 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,305 psi | 62% | 2907 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,834 psi | 75% | 3038 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 48,211 psi | 76% | 3091 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,500 psi | 45% | 2598 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,173 psi | 58% | 2861 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,563 psi | 56% | 2861 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,214 psi | 82% | 3074 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 44,730 psi | 70% | 2930 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 48,211 psi | 76% | 3091 fps | 95.8% |
| Bofors RP7 | <<locked>> | 82% | 42,221 psi | 66% | 2844 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 45,295 psi | 71% | 2936 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 42,844 psi | 67% | 2933 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 84% | 46,180 psi | 72% | 2963 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 52,939 psi | 83% | 3074 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,068 psi | 50% | 2654 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,617 psi | 78% | 3048 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 42,279 psi | 66% | 2949 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 42% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,705 psi | 79% | 3022 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,417 psi | 84% | 3058 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,731 psi | 73% | 2936 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,023 psi | 77% | 2966 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 43,062 psi | 67% | 2881 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,089 psi | 64% | 2822 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 33,779 psi | 53% | 2700 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 49,066 psi | 77% | 3028 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 52,475 psi | 82% | 3038 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,387 psi | 81% | 2986 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,688 psi | 73% | 2933 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,464 psi | 60% | 2762 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 41,771 psi | 65% | 2854 fps | 95.8% |
| Lovex S071 | <<locked>> | 96% | 37,115 psi | 58% | 2776 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 51,039 psi | 80% | 3005 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,663 psi | 81% | 3002 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,195 psi | 74% | 2982 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 49,226 psi | 77% | 3045 fps | 95.7% |
| Norma MRP | <<locked>> | 92% | 41,263 psi | 65% | 2969 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 35,186 psi | 55% | 2753 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 47,471 psi | 74% | 3002 fps | 99.7% |
| Ramshot Hunter | 70.6 gr | 84% | 39,291 psi | 62% | 2861 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 43% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,484 psi | 71% | 2923 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,677 psi | 81% | 3123 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,829 psi | 66% | 2976 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,940 psi | 55% | 2762 fps | 95.7% |
| ReloadSwiss RS 70 | 71.1 gr | 82% | 36,854 psi | 58% | 2838 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 48,385 psi | 76% | 2949 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,047 psi | 66% | 2867 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 53,417 psi | 84% | 3087 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 94% | 46,760 psi | 73% | 3018 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 82% | 42,221 psi | 66% | 2844 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,464 psi | 60% | 2762 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,475 psi | 82% | 3038 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,688 psi | 73% | 2933 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,771 psi | 65% | 2854 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,395 psi | 68% | 2927 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,272 psi | 83% | 3061 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,865 psi | 80% | 3028 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,880 psi | 81% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,685 psi | 68% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,147 psi | 63% | 2759 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 46,325 psi | 73% | 3012 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 51,721 psi | 81% | 2940 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,069 psi | 83% | 3051 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,554 psi | 67% | 2871 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 31,546 psi | 49% | 2697 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 44,193 psi | 69% | 2933 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 52,460 psi | 82% | 2927 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,588 psi | 76% | 2920 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,095 psi | 77% | 2933 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,640 psi | 64% | 2799 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 36,608 psi | 57% | 2756 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 96% | 43,700 psi | 68% | 2907 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 47,384 psi | 74% | 2920 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,071 psi | 57% | 2753 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 31,415 psi | 49% | 2687 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,926 psi | 56% | 2723 fps | 98.6% |
| Winchester 760 | <<locked>> | 82% | 40,103 psi | 63% | 2871 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,805 psi | 45% | 2694 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,836 psi | 80% | 3035 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,355 psi | 74% | 2986 fps | 95.3% |
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 109 powders for .300 Weath. Mag. loaded with the .308 | 150gr | Peregrine VLR-4. Alliant Reloder-26 delivers the highest muzzle velocity at 3,301 fps; across all powders the maximum-charge window runs from 1,969 fps to 3,301 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. ReloadSwiss RS 70, Alliant Reloder-16, Ramshot Hunter rank at the top here: for .300 Weath. Mag. with the .308 | 150gr | Peregrine VLR-4 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Hodgdon H1000 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.