Load Specifications
Load data in caliber .300 PRC with .308 | 155gr | Lapua Scenar bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and ReloadSwiss RS 70.
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% | 57,885 psi | 89% | 3015 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,056 psi | 85% | 3031 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 58,044 psi | 89% | 3140 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 58,465 psi | 90% | 3077 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,956 psi | 86% | 3133 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 55,361 psi | 85% | 3228 fps | 97.1% |
| Accurate MAGPRO | <<locked>> | 98% | 56,420 psi | 87% | 3225 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 86% | 58,073 psi | 89% | 3110 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,753 psi | 87% | 3176 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 58,407 psi | 90% | 3235 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,885 psi | 89% | 3238 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,072 psi | 88% | 3176 fps | 98.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,072 psi | 88% | 3176 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,419 psi | 85% | 3077 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,622 psi | 86% | 3100 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,449 psi | 87% | 3192 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 58,044 psi | 89% | 3215 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,289 psi | 87% | 3163 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,653 psi | 89% | 3228 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,447 psi | 84% | 3153 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,239 psi | 73% | 3074 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,868 psi | 84% | 3241 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,663 psi | 81% | 3140 fps | 97.5% |
| Bofors RP3 | <<locked>> | 84% | 56,550 psi | 87% | 3097 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,653 psi | 89% | 3228 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 55,680 psi | 86% | 3077 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 56,855 psi | 87% | 3114 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 58,030 psi | 89% | 3189 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 57,334 psi | 88% | 3143 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 58,465 psi | 90% | 3173 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,348 psi | 88% | 3156 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,014 psi | 88% | 3114 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 58,131 psi | 89% | 3150 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,209 psi | 71% | 3107 fps | 96.8% |
| Hodgdon Superformance | <<locked>> | 90% | 58,784 psi | 90% | 3228 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,622 psi | 56% | 1965 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 58,450 psi | 90% | 3110 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,392 psi | 88% | 3091 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,434 psi | 87% | 3071 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 57,014 psi | 88% | 3114 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,276 psi | 88% | 3107 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 56,362 psi | 87% | 3123 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,058 psi | 88% | 3130 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,999 psi | 86% | 3097 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,666 psi | 86% | 3202 fps | 96.9% |
| Lovex S060 | <<locked>> | 82% | 58,653 psi | 90% | 3071 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 57,827 psi | 89% | 3084 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,493 psi | 88% | 3104 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 55,622 psi | 86% | 3094 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,182 psi | 74% | 2976 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 58,537 psi | 90% | 3140 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,914 psi | 89% | 3173 fps | 98.2% |
| Norma MRP | <<locked>> | 98% | 57,479 psi | 88% | 3258 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 58,044 psi | 89% | 3173 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,796 psi | 86% | 3107 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,405 psi | 87% | 3225 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 56,971 psi | 88% | 3173 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,633 psi | 78% | 3087 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 57% | 2011 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,623 psi | 87% | 3097 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,580 psi | 89% | 3209 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,811 psi | 86% | 3156 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 58,291 psi | 90% | 3248 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,470 psi | 71% | 3104 fps | 98% |
| Rottweil R 902 | <<locked>> | 82% | 56,115 psi | 86% | 3041 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,652 psi | 87% | 3094 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 58,363 psi | 90% | 3146 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 96% | 55,622 psi | 86% | 3153 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 55,680 psi | 86% | 3077 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,493 psi | 88% | 3104 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 57,827 psi | 89% | 3084 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,622 psi | 86% | 3094 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 58,349 psi | 90% | 3153 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,087 psi | 88% | 2969 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,319 psi | 88% | 3058 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 58,769 psi | 90% | 3205 fps | 98.6% |
| Somchem S355 | <<locked>> | 86% | 56,405 psi | 87% | 3084 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,666 psi | 87% | 3077 fps | 96.3% |
| Somchem S365 | <<locked>> | 94% | 57,783 psi | 89% | 3173 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,304 psi | 87% | 3127 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 56,536 psi | 87% | 2999 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,884 psi | 88% | 3015 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,827 psi | 89% | 3058 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,550 psi | 87% | 3114 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,637 psi | 86% | 3097 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 84% | 58,769 psi | 90% | 3061 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,622 psi | 86% | 3114 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,942 psi | 88% | 3179 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,537 psi | 89% | 3245 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,289 psi | 87% | 3071 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 58,276 psi | 90% | 3192 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,386 psi | 78% | 3222 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,492 psi | 87% | 3120 fps | 98.1% |
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% | 54,157 psi | 83% | 2963 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,677 psi | 80% | 2969 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 35,868 psi | 55% | 2713 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 51,329 psi | 79% | 2969 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,537 psi | 61% | 2822 fps | 98.2% |
| Accurate High Country | <<locked>> | 92% | 48,138 psi | 74% | 3087 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 96% | 52,504 psi | 81% | 3156 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 48,124 psi | 74% | 2940 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 43,613 psi | 67% | 2923 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 51,024 psi | 78% | 3100 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,838 psi | 83% | 3173 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,816 psi | 67% | 2923 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,816 psi | 67% | 2923 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,878 psi | 75% | 2969 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,156 psi | 80% | 3041 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,174 psi | 59% | 2828 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,642 psi | 67% | 2969 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,337 psi | 67% | 2917 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 43,859 psi | 67% | 2969 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,137 psi | 43% | 2559 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 90% | 34,200 psi | 53% | 2756 fps | 95.3% |
| Alliant Reloder-26 | 74.7 gr | 82% | 32,518 psi | 50% | 2746 fps | 95.4% |
| Bofors RP15 | <<locked>> | 94% | 43,250 psi | 67% | 2953 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 49,356 psi | 76% | 2979 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 43,859 psi | 67% | 2969 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 43,352 psi | 67% | 2841 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 49,719 psi | 76% | 2992 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 41,495 psi | 64% | 2871 fps | 96.3% |
| Hodgdon H4350 | <<locked>> | 80% | 44,179 psi | 68% | 2894 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 94% | 51,111 psi | 79% | 3048 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,563 psi | 82% | 3091 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,824 psi | 55% | 2717 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 54,288 psi | 84% | 3091 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 43,265 psi | 67% | 3035 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 40,538 psi | 62% | 2881 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 42% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 54,795 psi | 84% | 3054 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,633 psi | 78% | 2976 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,968 psi | 81% | 3012 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 41,408 psi | 64% | 2818 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,657 psi | 69% | 2874 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 37,971 psi | 58% | 2772 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 53,490 psi | 82% | 3071 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,591 psi | 81% | 3038 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 96% | 48,602 psi | 75% | 3068 fps | 95.1% |
| Lovex S060 | <<locked>> | 80% | 55,303 psi | 85% | 3018 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 51,053 psi | 79% | 2976 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,163 psi | 65% | 2818 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 40,538 psi | 62% | 2799 fps | 96.2% |
| Lovex S071 | <<locked>> | 90% | 34,722 psi | 53% | 2684 fps | 95% |
| Norma 203B | <<locked>> | 80% | 51,488 psi | 79% | 3028 fps | 100% |
| Norma 204 | <<locked>> | 84% | 44,077 psi | 68% | 2910 fps | 95% |
| Norma MRP | 77.8 gr | 88% | 40,205 psi | 62% | 2917 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 39,218 psi | 60% | 2818 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 52,083 psi | 80% | 3048 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 48,762 psi | 75% | 3081 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 38,014 psi | 58% | 2799 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 94% | 40,480 psi | 62% | 2877 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,847 psi | 43% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,545 psi | 76% | 2972 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,354 psi | 71% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,479 psi | 61% | 2841 fps | 98% |
| ReloadSwiss RS 70 | 72.2 gr | 80% | 38,014 psi | 58% | 2844 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 40,335 psi | 62% | 2953 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 52,837 psi | 81% | 2989 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,601 psi | 72% | 2923 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,138 psi | 74% | 2963 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 45,426 psi | 70% | 2959 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 43,352 psi | 67% | 2841 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,163 psi | 65% | 2818 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 51,053 psi | 79% | 2976 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,538 psi | 62% | 2799 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,703 psi | 73% | 2979 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,427 psi | 73% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,379 psi | 64% | 2759 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 45,020 psi | 69% | 2956 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 46,644 psi | 72% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,026 psi | 82% | 3015 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 35,679 psi | 55% | 2766 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 40,422 psi | 62% | 2822 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 53,098 psi | 82% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,345 psi | 82% | 2963 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,701 psi | 69% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,596 psi | 62% | 2818 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 92% | 42,598 psi | 66% | 2858 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 51,648 psi | 79% | 2956 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,118 psi | 62% | 2815 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 31,314 psi | 48% | 2648 fps | 96.1% |
| Vihtavuori N560 | <<locked>> | 94% | 49,951 psi | 77% | 3107 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,769 psi | 61% | 2782 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 41,640 psi | 64% | 2877 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,716 psi | 41% | 2592 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 92% | 45,759 psi | 70% | 2930 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 93 powders for .300 PRC loaded with the .308 | 155gr | Lapua Scenar. Norma MRP delivers the highest muzzle velocity at 3,258 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,258 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.308" calls for a 1:12.0 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. Norma MRP, Alliant Reloder-26, ReloadSwiss RS 70 rank at the top here: for .300 PRC with the .308 | 155gr | Lapua Scenar 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.