Load Specifications
Load data in caliber .300 PRC with .308 | 135gr | Atomic 29 FNHP 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 Hodgdon Superformance.
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% | 56,840 psi | 87% | 3209 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,245 psi | 85% | 3222 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,185 psi | 82% | 3248 fps | 98.7% |
| Accurate 4064 | <<locked>> | 86% | 57,435 psi | 88% | 3268 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,158 psi | 85% | 3317 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 56,666 psi | 87% | 3304 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 58,044 psi | 89% | 3310 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,536 psi | 87% | 3360 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,798 psi | 89% | 3445 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 58,755 psi | 90% | 3330 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,477 psi | 85% | 3297 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,130 psi | 86% | 3389 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,682 psi | 89% | 3415 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,854 psi | 86% | 3343 fps | 97% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,055 psi | 82% | 3330 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,908 psi | 77% | 3268 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,497 psi | 67% | 3159 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 58,305 psi | 90% | 3488 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,956 psi | 88% | 3317 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 56,086 psi | 86% | 3287 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,055 psi | 82% | 3330 fps | 96.5% |
| Bofors RP7 | <<locked>> | 90% | 55,535 psi | 85% | 3264 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 86% | 56,550 psi | 87% | 3307 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 57,667 psi | 89% | 3373 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 57,363 psi | 88% | 3333 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 57,348 psi | 88% | 3317 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,289 psi | 87% | 3301 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 58,059 psi | 89% | 3353 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 58,769 psi | 90% | 3419 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 55% | 2106 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 58,523 psi | 90% | 3317 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,885 psi | 89% | 3294 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,421 psi | 88% | 3291 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,681 psi | 87% | 3268 fps | 98.4% |
| IMR 4350 | <<locked>> | 94% | 56,768 psi | 87% | 3301 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,290 psi | 88% | 3297 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 55,680 psi | 86% | 3307 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 56,942 psi | 88% | 3333 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 57,159 psi | 88% | 3271 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,405 psi | 85% | 3222 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,566 psi | 89% | 3284 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,290 psi | 88% | 3291 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 58,682 psi | 90% | 3337 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,671 psi | 67% | 3061 fps | 96.7% |
| Norma 201 | <<locked>> | 84% | 58,711 psi | 90% | 3297 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,999 psi | 86% | 3238 fps | 100% |
| Norma 203B | <<locked>> | 86% | 58,262 psi | 90% | 3340 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,986 psi | 89% | 3360 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 56,652 psi | 87% | 3435 fps | 98.6% |
| Norma URP | <<locked>> | 94% | 57,580 psi | 89% | 3363 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,666 psi | 86% | 3307 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 56,739 psi | 87% | 3360 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,608 psi | 56% | 2156 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,565 psi | 87% | 3284 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,579 psi | 87% | 3373 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,000 psi | 88% | 3409 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,274 psi | 85% | 3337 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 58,059 psi | 89% | 3438 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 55,883 psi | 86% | 3241 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,144 psi | 86% | 3284 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 58,349 psi | 90% | 3330 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 98% | 54,911 psi | 84% | 3327 fps | 97% |
| Rottweil R 907 | <<locked>> | 90% | 55,535 psi | 85% | 3264 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,290 psi | 88% | 3291 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,159 psi | 88% | 3271 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,566 psi | 89% | 3284 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 58,682 psi | 90% | 3337 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 58,175 psi | 89% | 3353 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 58,233 psi | 90% | 3307 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,332 psi | 85% | 3268 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,999 psi | 86% | 3169 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,305 psi | 88% | 3173 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,174 psi | 88% | 3241 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 58,392 psi | 90% | 3386 fps | 97.6% |
| Somchem S335 | <<locked>> | 82% | 55,738 psi | 86% | 3163 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,914 psi | 89% | 3291 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,999 psi | 86% | 3281 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 57,145 psi | 88% | 3366 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,535 psi | 85% | 3297 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 82% | 56,579 psi | 87% | 3153 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,173 psi | 86% | 3199 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,623 psi | 87% | 3215 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,580 psi | 89% | 3255 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,202 psi | 86% | 3301 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,488 psi | 79% | 3205 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 86% | 58,668 psi | 90% | 3261 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,201 psi | 85% | 3297 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,796 psi | 86% | 3356 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,260 psi | 87% | 3264 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,870 psi | 89% | 3379 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,281 psi | 70% | 3317 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,361 psi | 85% | 3271 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,188 psi | 86% | 3294 fps | 97% |
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% | 49,806 psi | 77% | 3097 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,225 psi | 74% | 3087 fps | 96% |
| Accurate 3100 | <<locked>> | 92% | 39,943 psi | 61% | 2976 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 47,224 psi | 73% | 3097 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,737 psi | 55% | 2900 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 53,069 psi | 82% | 3238 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 45,005 psi | 69% | 3064 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 94% | 49,458 psi | 76% | 3225 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,850 psi | 77% | 3301 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,281 psi | 70% | 3091 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,559 psi | 75% | 3169 fps | 99.4% |
| Alliant Reloder-16 | 69.2 gr | 80% | 35,128 psi | 54% | 2917 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,059 psi | 62% | 3068 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,776 psi | 75% | 3205 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 49,443 psi | 76% | 3261 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 31,154 psi | 48% | 2812 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 96% | 38,087 psi | 59% | 3018 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 88% | 36,724 psi | 56% | 3025 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,142 psi | 82% | 3248 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 45,571 psi | 70% | 3100 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 49,443 psi | 76% | 3261 fps | 95.6% |
| Bofors RP7 | <<locked>> | 84% | 45,788 psi | 70% | 3071 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 45,977 psi | 71% | 3104 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 43,743 psi | 67% | 3100 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 84% | 46,992 psi | 72% | 3133 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 53,679 psi | 83% | 3251 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,619 psi | 50% | 2805 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,546 psi | 78% | 3225 fps | 100% |
| Hodgdon Superformance | 82.8 gr | 84% | 43,279 psi | 67% | 3117 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 41% | 1890 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,459 psi | 79% | 3196 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,230 psi | 83% | 3238 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,297 psi | 73% | 3107 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,748 psi | 77% | 3136 fps | 97.2% |
| IMR 4350 | <<locked>> | 86% | 43,758 psi | 67% | 3041 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 44,454 psi | 68% | 3045 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 34,432 psi | 53% | 2851 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 49,821 psi | 77% | 3205 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 53,359 psi | 82% | 3212 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,127 psi | 80% | 3163 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 47,471 psi | 73% | 3107 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,073 psi | 60% | 2920 fps | 95.6% |
| Lovex S070 | <<locked>> | 84% | 42,395 psi | 65% | 3015 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 40,959 psi | 63% | 2999 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 51,779 psi | 80% | 3182 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,373 psi | 81% | 3182 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,892 psi | 74% | 3156 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 50,328 psi | 77% | 3215 fps | 95.4% |
| Norma MRP | <<locked>> | 94% | 45,614 psi | 70% | 3212 fps | 96% |
| Norma URP | <<locked>> | 80% | 35,781 psi | 55% | 2900 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 48,327 psi | 74% | 3173 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 40,089 psi | 62% | 3018 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,238 psi | 42% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,267 psi | 71% | 3087 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,562 psi | 81% | 3301 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,670 psi | 66% | 3143 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,737 psi | 55% | 2917 fps | 95.3% |
| ReloadSwiss RS 70 | 77.6 gr | 82% | 37,507 psi | 58% | 2995 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 49,255 psi | 76% | 3127 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,699 psi | 66% | 3031 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 96% | 54,549 psi | 84% | 3261 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 47,877 psi | 74% | 3186 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 45,788 psi | 70% | 3071 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,073 psi | 60% | 2920 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,359 psi | 82% | 3212 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,471 psi | 73% | 3107 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 42,395 psi | 65% | 3015 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,164 psi | 68% | 3094 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,273 psi | 83% | 3238 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,648 psi | 79% | 3202 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,547 psi | 81% | 3117 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,295 psi | 68% | 2959 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 43,714 psi | 67% | 2982 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,442 psi | 73% | 3182 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 52,417 psi | 81% | 3114 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 54,027 psi | 83% | 3228 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,236 psi | 67% | 3035 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 32,169 psi | 49% | 2844 fps | 97.8% |
| Somchem S385 | <<locked>> | 92% | 45,426 psi | 70% | 3100 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 53,113 psi | 82% | 3100 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,313 psi | 76% | 3091 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,748 psi | 77% | 3104 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,220 psi | 63% | 2956 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 37,231 psi | 57% | 2910 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 98% | 47,979 psi | 74% | 3136 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 48,080 psi | 74% | 3087 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,666 psi | 56% | 2904 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 86% | 34,432 psi | 53% | 2897 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,666 psi | 56% | 2877 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 43,918 psi | 68% | 3104 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 29,559 psi | 45% | 2838 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,808 psi | 80% | 3209 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,631 psi | 75% | 3156 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 108 powders for .300 PRC loaded with the .308 | 135gr | Atomic 29 FNHP. Alliant Reloder-26 delivers the highest muzzle velocity at 3,488 fps; across all powders the maximum-charge window runs from 2,106 fps to 3,488 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.308" calls for a 1:15.5 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, Hodgdon Superformance rank at the top here: for .300 PRC with the .308 | 135gr | Atomic 29 FNHP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Hodgdon H1000, Hodgdon Retumbo 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.