Load Specifications
Load data in caliber .300 PRC with .308 | 147gr | Winchester FMJ Match bullet and 87 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Alliant Reloder-16.
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% | 58,436 psi | 90% | 3100 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,564 psi | 85% | 3117 fps | 98.4% |
| Accurate 3100 | <<locked>> | 98% | 54,926 psi | 85% | 3166 fps | 99.4% |
| Accurate 4064 | <<locked>> | 82% | 55,303 psi | 85% | 3110 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,666 psi | 87% | 3225 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 58,537 psi | 90% | 3196 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,653 psi | 89% | 3271 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 98% | 55,201 psi | 85% | 3255 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 58,566 psi | 90% | 3333 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,956 psi | 86% | 3163 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,159 psi | 86% | 3189 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,174 psi | 88% | 3281 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,897 psi | 84% | 3245 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,913 psi | 88% | 3248 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 58,450 psi | 90% | 3317 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,303 psi | 85% | 3241 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,964 psi | 74% | 3156 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,854 psi | 86% | 3330 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,534 psi | 82% | 3228 fps | 97.4% |
| Bofors RP3 | <<locked>> | 84% | 57,159 psi | 88% | 3186 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 58,450 psi | 90% | 3317 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 56,289 psi | 87% | 3166 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 57,363 psi | 88% | 3202 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 58,697 psi | 90% | 3278 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 58,044 psi | 89% | 3235 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,972 psi | 89% | 3238 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,624 psi | 89% | 3199 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 58,668 psi | 90% | 3238 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,007 psi | 72% | 3192 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 88% | 55,288 psi | 85% | 3248 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 56% | 2031 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 58,798 psi | 90% | 3199 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,986 psi | 89% | 3179 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,869 psi | 87% | 3159 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 57,479 psi | 88% | 3202 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,841 psi | 89% | 3196 fps | 99.1% |
| IMR 4831 | <<locked>> | 92% | 56,898 psi | 88% | 3212 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,638 psi | 89% | 3222 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,826 psi | 87% | 3186 fps | 96.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,623 psi | 87% | 3294 fps | 96.8% |
| Lovex S062 | <<locked>> | 84% | 58,175 psi | 89% | 3169 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 58,233 psi | 90% | 3196 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 56,086 psi | 86% | 3179 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,704 psi | 75% | 3058 fps | 98.6% |
| Norma 203B | <<locked>> | 82% | 55,506 psi | 85% | 3173 fps | 100% |
| Norma 204 | <<locked>> | 92% | 58,624 psi | 90% | 3258 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 58,436 psi | 90% | 3346 fps | 99.3% |
| Norma URP | <<locked>> | 90% | 55,071 psi | 85% | 3202 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 56,362 psi | 87% | 3199 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,435 psi | 88% | 3317 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 92% | 57,696 psi | 89% | 3261 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,430 psi | 79% | 3173 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,217 psi | 57% | 2080 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 57,188 psi | 88% | 3182 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 58,305 psi | 90% | 3301 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,608 psi | 87% | 3241 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,926 psi | 85% | 3271 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,253 psi | 73% | 3189 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 82% | 56,681 psi | 87% | 3133 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 57,246 psi | 88% | 3182 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,463 psi | 85% | 3173 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 96% | 56,347 psi | 87% | 3238 fps | 98% |
| Rottweil R 907 | <<locked>> | 88% | 56,289 psi | 87% | 3166 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 58,233 psi | 90% | 3196 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 58,175 psi | 89% | 3169 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,086 psi | 86% | 3179 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,158 psi | 85% | 3186 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,667 psi | 89% | 3054 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,914 psi | 89% | 3143 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,869 psi | 86% | 3232 fps | 97.9% |
| Somchem S355 | <<locked>> | 86% | 57,029 psi | 88% | 3176 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 57,363 psi | 88% | 3163 fps | 96.2% |
| Somchem S365 | <<locked>> | 94% | 58,755 psi | 90% | 3268 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,840 psi | 87% | 3209 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 57,043 psi | 88% | 3087 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,290 psi | 88% | 3100 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 58,479 psi | 90% | 3146 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,203 psi | 88% | 3199 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,391 psi | 87% | 3182 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 82% | 55,608 psi | 86% | 3094 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,275 psi | 87% | 3199 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 57,870 psi | 89% | 3271 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 58,436 psi | 90% | 3337 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,072 psi | 88% | 3159 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,998 psi | 85% | 3215 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,648 psi | 79% | 3310 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,246 psi | 88% | 3205 fps | 98% |
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% | 54,853 psi | 84% | 3051 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 52,054 psi | 80% | 3054 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 36,289 psi | 56% | 2785 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 51,982 psi | 80% | 3058 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,016 psi | 62% | 2900 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 48,530 psi | 75% | 3025 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 47,195 psi | 73% | 3071 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 51,532 psi | 79% | 3186 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 54,491 psi | 84% | 3264 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,269 psi | 76% | 3048 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,649 psi | 81% | 3130 fps | 100% |
| Alliant Reloder-16 | 69.2 gr | 80% | 38,537 psi | 59% | 2910 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,237 psi | 68% | 3051 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 46,833 psi | 72% | 3061 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 44,599 psi | 69% | 3051 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,543 psi | 44% | 2631 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 34,679 psi | 53% | 2828 fps | 95.1% |
| Alliant Reloder-26 | 78.3 gr | 82% | 32,953 psi | 51% | 2815 fps | 95.1% |
| Bofors RP15 | <<locked>> | 96% | 46,891 psi | 72% | 3100 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 49,995 psi | 77% | 3068 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 44,599 psi | 69% | 3051 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 43,671 psi | 67% | 2920 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 50,111 psi | 77% | 3074 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 41,959 psi | 65% | 2953 fps | 96% |
| Hodgdon H4350 | <<locked>> | 80% | 44,701 psi | 69% | 2976 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,114 psi | 83% | 3173 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,245 psi | 56% | 2792 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 54,969 psi | 85% | 3182 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 43,990 psi | 68% | 3117 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 40,944 psi | 63% | 2959 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 42% | 1821 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 55,303 psi | 85% | 3143 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,053 psi | 79% | 3064 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,330 psi | 82% | 3097 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 41,872 psi | 64% | 2897 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,092 psi | 69% | 2953 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 38,276 psi | 59% | 2844 fps | 97.7% |
| IMR 4895 | <<locked>> | 80% | 53,998 psi | 83% | 3159 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,272 psi | 82% | 3123 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 96% | 49,327 psi | 76% | 3153 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 51,474 psi | 79% | 3061 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,656 psi | 66% | 2900 fps | 97.6% |
| Lovex S070 | <<locked>> | 80% | 40,799 psi | 63% | 2874 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 37,579 psi | 58% | 2818 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,982 psi | 80% | 3114 fps | 100% |
| Norma 204 | <<locked>> | 86% | 47,732 psi | 73% | 3058 fps | 95.8% |
| Norma MRP | 81.6 gr | 88% | 40,828 psi | 63% | 2995 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 39,552 psi | 61% | 2890 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 52,620 psi | 81% | 3136 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 49,545 psi | 76% | 3166 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 38,450 psi | 59% | 2874 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 96% | 44,338 psi | 68% | 3028 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,804 psi | 43% | 1864 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,140 psi | 77% | 3058 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,978 psi | 72% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,871 psi | 61% | 2917 fps | 97.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,450 psi | 59% | 2923 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 40,901 psi | 63% | 3028 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 53,272 psi | 82% | 3077 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,978 psi | 72% | 3005 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,762 psi | 75% | 3048 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 46,050 psi | 71% | 3045 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 43,671 psi | 67% | 2920 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,656 psi | 66% | 2900 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 51,474 psi | 79% | 3061 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,799 psi | 63% | 2874 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,196 psi | 74% | 3061 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,776 psi | 74% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,742 psi | 64% | 2838 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 45,643 psi | 70% | 3035 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 47,210 psi | 73% | 3005 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,621 psi | 82% | 3097 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 36,129 psi | 56% | 2844 fps | 99.5% |
| Somchem S385 | <<locked>> | 86% | 40,944 psi | 63% | 2897 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 53,505 psi | 82% | 3035 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,708 psi | 83% | 3048 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,020 psi | 69% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,988 psi | 63% | 2894 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 92% | 43,163 psi | 66% | 2936 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 51,967 psi | 80% | 3038 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,422 psi | 62% | 2890 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 31,647 psi | 49% | 2713 fps | 95.7% |
| Vihtavuori N560 | <<locked>> | 96% | 54,389 psi | 84% | 3261 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,147 psi | 62% | 2858 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 41,959 psi | 65% | 2953 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 82% | 27,035 psi | 42% | 2657 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 92% | 46,253 psi | 71% | 3005 fps | 95.5% |
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 95 powders for .300 PRC loaded with the .308 | 147gr | Winchester FMJ Match. Norma MRP delivers the highest muzzle velocity at 3,346 fps; across all powders the maximum-charge window runs from 2,031 fps to 3,346 fps. ADI AR 2217 gives the best case fill at 100 %, and 95 of the 95 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 147.0 gr projectile in 0.308" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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, Norma MRP, Alliant Reloder-16 rank at the top here: for .300 PRC with the .308 | 147gr | Winchester FMJ Match they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.