Load Specifications
Load data in caliber .300 PRC with .308 | 139gr | Prvi Partizan FMJ bullet and 89 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-26 and Alliant Reloder-17.
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>> | 82% | 56,202 psi | 86% | 3150 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,406 psi | 88% | 3215 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,188 psi | 86% | 3258 fps | 99.3% |
| Accurate 4064 | <<locked>> | 84% | 56,594 psi | 87% | 3209 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 58,059 psi | 89% | 3320 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,565 psi | 87% | 3241 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,259 psi | 85% | 3297 fps | 97.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,623 psi | 87% | 3346 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,028 psi | 86% | 3369 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,551 psi | 89% | 3268 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,754 psi | 89% | 3294 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 58,552 psi | 90% | 3383 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,159 psi | 86% | 3346 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 58,276 psi | 90% | 3346 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,724 psi | 86% | 3340 fps | 97.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,576 psi | 81% | 3271 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,745 psi | 70% | 3176 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,971 psi | 88% | 3425 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,024 psi | 78% | 3251 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 58,711 psi | 90% | 3284 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,724 psi | 86% | 3340 fps | 97.4% |
| Bofors RP7 | <<locked>> | 90% | 57,754 psi | 89% | 3264 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 84% | 55,230 psi | 85% | 3241 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 56,289 psi | 87% | 3310 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 88% | 55,869 psi | 86% | 3264 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,158 psi | 85% | 3238 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,391 psi | 87% | 3281 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 56,942 psi | 88% | 3346 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,303 psi | 56% | 2083 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,811 psi | 87% | 3245 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,985 psi | 86% | 3222 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 58,653 psi | 90% | 3261 fps | 98.9% |
| IMR 4350 | <<locked>> | 92% | 55,332 psi | 85% | 3235 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,883 psi | 86% | 3232 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 58,247 psi | 90% | 3307 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,535 psi | 85% | 3261 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 58,160 psi | 89% | 3278 fps | 96% |
| Lovex S060 | <<locked>> | 82% | 57,319 psi | 88% | 3209 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,130 psi | 86% | 3215 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,159 psi | 86% | 3232 fps | 99.4% |
| Lovex S070 | <<locked>> | 92% | 57,566 psi | 89% | 3274 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,383 psi | 71% | 3077 fps | 97.7% |
| Norma 201 | <<locked>> | 82% | 57,464 psi | 88% | 3232 fps | 100% |
| Norma 202 | <<locked>> | 82% | 58,233 psi | 90% | 3228 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,043 psi | 88% | 3274 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,246 psi | 87% | 3287 fps | 97.1% |
| Norma MRP | <<locked>> | 98% | 55,521 psi | 85% | 3369 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 56,463 psi | 87% | 3301 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 58,015 psi | 89% | 3301 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 55,274 psi | 85% | 3294 fps | 99.1% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,892 psi | 75% | 3186 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,999 psi | 57% | 2129 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 58,813 psi | 90% | 3281 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,622 psi | 86% | 3343 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 58,044 psi | 89% | 3340 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,463 psi | 87% | 3369 fps | 99.8% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,976 psi | 69% | 3192 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 84% | 58,204 psi | 90% | 3232 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 58,769 psi | 90% | 3281 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,797 psi | 87% | 3264 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 98% | 57,464 psi | 88% | 3327 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 57,754 psi | 89% | 3264 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,159 psi | 86% | 3232 fps | 99.4% |
| Shooters World Precision | <<locked>> | 84% | 56,130 psi | 86% | 3215 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,566 psi | 89% | 3274 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,608 psi | 87% | 3284 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,479 psi | 88% | 3261 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 58,001 psi | 89% | 3156 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,753 psi | 86% | 3104 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,825 psi | 86% | 3176 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,985 psi | 88% | 3320 fps | 97.6% |
| Somchem S335 | <<locked>> | 82% | 57,841 psi | 89% | 3150 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 58,378 psi | 90% | 3271 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 55,985 psi | 86% | 3304 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 58,204 psi | 90% | 3304 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 82% | 58,537 psi | 90% | 3136 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 58,566 psi | 90% | 3189 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 58,798 psi | 90% | 3202 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,318 psi | 87% | 3192 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 58,653 psi | 90% | 3297 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,925 psi | 83% | 3212 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 57,188 psi | 88% | 3196 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,653 psi | 89% | 3297 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 55,143 psi | 85% | 3304 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 58,682 psi | 90% | 3255 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,550 psi | 87% | 3314 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,138 psi | 74% | 3333 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,609 psi | 89% | 3264 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 58,740 psi | 90% | 3301 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% | 52,736 psi | 81% | 3097 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,256 psi | 77% | 3087 fps | 96.8% |
| Accurate 3100 | <<locked>> | 90% | 39,697 psi | 61% | 2933 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 49,937 psi | 77% | 3100 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,130 psi | 59% | 2923 fps | 97% |
| ADI AR 2208 | <<locked>> | 80% | 46,847 psi | 72% | 3061 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 92% | 48,254 psi | 74% | 3159 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 98% | 52,881 psi | 81% | 3274 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,156 psi | 80% | 3301 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,398 psi | 73% | 3091 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,705 psi | 78% | 3169 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,927 psi | 57% | 2933 fps | 96.9% |
| Alliant Reloder-17 | 74.6 gr | 80% | 42,221 psi | 65% | 3081 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 47,935 psi | 74% | 3153 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 48,544 psi | 75% | 3202 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 29,037 psi | 45% | 2707 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 94% | 37,623 psi | 58% | 2972 fps | 95.7% |
| Alliant Reloder-26 | 82.2 gr | 86% | 36,318 psi | 56% | 2979 fps | 96% |
| Bofors RP15 | <<locked>> | 98% | 47,848 psi | 74% | 3186 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 47,979 psi | 74% | 3104 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 48,544 psi | 75% | 3202 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 44,773 psi | 69% | 3009 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 48,196 psi | 74% | 3110 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 42,975 psi | 66% | 3041 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 82% | 45,919 psi | 71% | 3071 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,563 psi | 53% | 2818 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,808 psi | 81% | 3222 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 42,192 psi | 65% | 3051 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 42% | 1867 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,403 psi | 82% | 3186 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,269 psi | 76% | 3104 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,590 psi | 79% | 3133 fps | 97.8% |
| IMR 4350 | <<locked>> | 84% | 42,989 psi | 66% | 2986 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,526 psi | 67% | 2986 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 36,564 psi | 56% | 2867 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 52,011 psi | 80% | 3199 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,708 psi | 84% | 3215 fps | 95.2% |
| Lovex S060 | <<locked>> | 80% | 53,969 psi | 83% | 3153 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,632 psi | 76% | 3104 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,075 psi | 63% | 2930 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 41,887 psi | 64% | 2963 fps | 95.6% |
| Lovex S071 | <<locked>> | 94% | 38,159 psi | 59% | 2894 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 54,027 psi | 83% | 3173 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,563 psi | 84% | 3169 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,053 psi | 77% | 3153 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 49,153 psi | 76% | 3153 fps | 95.4% |
| Norma MRP | <<locked>> | 90% | 41,742 psi | 64% | 3084 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 37,826 psi | 58% | 2917 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 50,531 psi | 78% | 3173 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 39,450 psi | 61% | 2963 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 45,353 psi | 70% | 3110 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,615 psi | 42% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,312 psi | 74% | 3091 fps | 97.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,860 psi | 69% | 3146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,956 psi | 58% | 2936 fps | 96.6% |
| ReloadSwiss RS 70 | 75.7 gr | 80% | 36,796 psi | 57% | 2936 fps | 95.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 41,843 psi | 64% | 3110 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 51,445 psi | 79% | 3120 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,078 psi | 69% | 3038 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 53,301 psi | 82% | 3202 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 92% | 46,934 psi | 72% | 3130 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 44,773 psi | 69% | 3009 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,075 psi | 63% | 2930 fps | 96.6% |
| Shooters World Precision | <<locked>> | 80% | 49,632 psi | 76% | 3104 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 41,887 psi | 64% | 2963 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,253 psi | 71% | 3094 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,708 psi | 83% | 3196 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,476 psi | 84% | 3104 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,137 psi | 71% | 2949 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,219 psi | 62% | 2864 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 46,499 psi | 72% | 3123 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 54,491 psi | 84% | 3100 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,426 psi | 70% | 3041 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 34,316 psi | 53% | 2867 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 44,744 psi | 69% | 3048 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 55,042 psi | 85% | 3084 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,532 psi | 79% | 3081 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,837 psi | 80% | 3094 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,294 psi | 67% | 2959 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 39,247 psi | 60% | 2920 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 47,065 psi | 72% | 3081 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 50,140 psi | 77% | 3081 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,711 psi | 60% | 2917 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 32,242 psi | 50% | 2795 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,508 psi | 59% | 2887 fps | 99% |
| Winchester 760 | <<locked>> | 82% | 43,134 psi | 66% | 3045 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 86% | 29,428 psi | 45% | 2802 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,012 psi | 83% | 3205 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 47,572 psi | 73% | 3097 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 102 powders for .300 PRC loaded with the .308 | 139gr | Prvi Partizan FMJ. Alliant Reloder-26 delivers the highest muzzle velocity at 3,425 fps; across all powders the maximum-charge window runs from 2,083 fps to 3,425 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 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 139.0 gr projectile in 0.308" calls for a 1:14.5 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-26, Alliant Reloder-17 rank at the top here: for .300 PRC with the .308 | 139gr | Prvi Partizan FMJ they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 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.