Load Specifications
Load data in caliber .300 PRC with .308 | 150gr | Impala LW CFN bullet and 75 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 56,594 psi | 87% | 3153 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 57,986 psi | 89% | 3202 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 58,218 psi | 90% | 3294 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 58,552 psi | 90% | 3156 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,841 psi | 89% | 3235 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 96% | 55,550 psi | 85% | 3225 fps | 96.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,221 psi | 65% | 2995 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,652 psi | 87% | 3133 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,667 psi | 89% | 3251 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,419 psi | 85% | 3212 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,319 psi | 88% | 3222 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,463 psi | 85% | 3228 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,478 psi | 87% | 3219 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,315 psi | 80% | 3205 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,043 psi | 88% | 3310 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 58,088 psi | 89% | 3274 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 58,189 psi | 90% | 3156 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 55,463 psi | 85% | 3228 fps | 98.1% |
| Bofors RP7 | <<locked>> | 86% | 56,637 psi | 87% | 3133 fps | 98.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,459 psi | 79% | 3136 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 82% | 57,957 psi | 89% | 3169 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,434 psi | 85% | 3182 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 86% | 58,117 psi | 89% | 3199 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 94% | 55,724 psi | 86% | 3166 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 58,204 psi | 90% | 3209 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 58,363 psi | 90% | 3169 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,401 psi | 79% | 3255 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 86% | 55,593 psi | 86% | 3215 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,014 psi | 57% | 2014 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,957 psi | 89% | 3140 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,870 psi | 89% | 3169 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,711 psi | 89% | 3156 fps | 99.2% |
| IMR 4831 | <<locked>> | 90% | 58,030 psi | 89% | 3189 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,942 psi | 88% | 3156 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 98% | 57,101 psi | 88% | 3264 fps | 97.2% |
| Lovex S065 | <<locked>> | 88% | 58,711 psi | 90% | 3159 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 57,043 psi | 88% | 3156 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,012 psi | 83% | 3110 fps | 99.4% |
| Norma 204 | <<locked>> | 88% | 55,201 psi | 85% | 3163 fps | 97.7% |
| Norma MRP | <<locked>> | 94% | 55,361 psi | 85% | 3258 fps | 99.1% |
| Norma URP | <<locked>> | 88% | 55,956 psi | 86% | 3176 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,812 psi | 89% | 3287 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 90% | 58,233 psi | 90% | 3232 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,260 psi | 87% | 3219 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,884 psi | 58% | 2064 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,305 psi | 88% | 3146 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 58,552 psi | 90% | 3261 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,667 psi | 89% | 3222 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,347 psi | 85% | 3238 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,909 psi | 80% | 3251 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 58,189 psi | 90% | 3153 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,680 psi | 86% | 3140 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 94% | 56,985 psi | 88% | 3212 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 86% | 56,637 psi | 87% | 3133 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 58,711 psi | 90% | 3159 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 57,043 psi | 88% | 3156 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,666 psi | 86% | 3153 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,682 psi | 89% | 3015 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 58,247 psi | 90% | 3110 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,550 psi | 87% | 3205 fps | 98.2% |
| Somchem S355 | <<locked>> | 84% | 57,667 psi | 89% | 3143 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,609 psi | 89% | 3130 fps | 96.5% |
| Somchem S365 | <<locked>> | 90% | 56,115 psi | 86% | 3182 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 58,015 psi | 89% | 3189 fps | 99% |
| Vihtavuori N150 | <<locked>> | 84% | 55,288 psi | 85% | 3061 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,682 psi | 89% | 3166 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,058 psi | 88% | 3159 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 88% | 57,087 psi | 88% | 3173 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,869 psi | 86% | 3199 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,187 psi | 85% | 3241 fps | 96.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,303 psi | 85% | 3219 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,188 psi | 88% | 3123 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,637 psi | 86% | 3186 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 57,377 psi | 88% | 3360 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,769 psi | 89% | 3179 fps | 98.3% |
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 3100 | <<locked>> | 82% | 36,347 psi | 56% | 2746 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 44,846 psi | 69% | 2966 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 54,404 psi | 84% | 3222 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 51,924 psi | 80% | 3048 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 44,846 psi | 69% | 2982 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 48,994 psi | 75% | 3097 fps | 95% |
| ADI AR 2225 | <<locked>> | 98% | 39,769 psi | 61% | 2933 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,258 psi | 82% | 3077 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,148 psi | 65% | 2956 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,356 psi | 74% | 3091 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 44,788 psi | 69% | 2979 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 43,047 psi | 66% | 2982 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,329 psi | 50% | 2713 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 34,055 psi | 52% | 2772 fps | 95.1% |
| Alliant Reloder-26 | 76.4 gr | 80% | 34,882 psi | 54% | 2838 fps | 96.4% |
| Bofors RP15 | <<locked>> | 92% | 45,310 psi | 70% | 3028 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 54,636 psi | 84% | 3100 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 43,047 psi | 66% | 2982 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 47,355 psi | 73% | 2959 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 98% | 48,385 psi | 74% | 3074 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 54,259 psi | 83% | 3107 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 45,890 psi | 71% | 2999 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 80% | 48,240 psi | 74% | 3015 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 52,214 psi | 80% | 3100 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,285 psi | 79% | 3084 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,147 psi | 62% | 2844 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 42,540 psi | 65% | 3048 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 44,904 psi | 69% | 3012 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,934 psi | 43% | 1808 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,607 psi | 84% | 3084 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,670 psi | 66% | 2877 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,370 psi | 74% | 2986 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 42,438 psi | 65% | 2900 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 50,502 psi | 78% | 3038 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 94% | 50,125 psi | 77% | 3133 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 46,485 psi | 72% | 2940 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 44,788 psi | 69% | 2923 fps | 97.3% |
| Lovex S071 | <<locked>> | 86% | 35,592 psi | 55% | 2726 fps | 95.3% |
| Norma 204 | <<locked>> | 82% | 45,426 psi | 70% | 2972 fps | 95.4% |
| Norma MRP | 77.9 gr | 84% | 39,610 psi | 61% | 2930 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 43,555 psi | 67% | 2940 fps | 98.9% |
| Ramshot Grand | <<locked>> | 94% | 50,473 psi | 78% | 3150 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 42,293 psi | 65% | 2927 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 42,511 psi | 65% | 2953 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,485 psi | 44% | 1850 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,940 psi | 83% | 3087 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,082 psi | 79% | 3143 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,251 psi | 68% | 2976 fps | 98.9% |
| ReloadSwiss RS 70 | 75.7 gr | 80% | 42,235 psi | 65% | 2976 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 39,653 psi | 61% | 2963 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 51,503 psi | 79% | 3045 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 49,284 psi | 76% | 3022 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 86% | 44,353 psi | 68% | 2969 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 47,355 psi | 73% | 2959 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,485 psi | 72% | 2940 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,788 psi | 69% | 2923 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,127 psi | 80% | 3091 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,169 psi | 79% | 2917 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,571 psi | 70% | 2881 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 43,961 psi | 68% | 2963 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 51,314 psi | 79% | 3038 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,056 psi | 83% | 3071 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 40,437 psi | 62% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 39,900 psi | 61% | 2835 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 48,965 psi | 75% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,933 psi | 69% | 2940 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 88% | 41,684 psi | 64% | 2867 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 44,483 psi | 68% | 2940 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,158 psi | 56% | 2799 fps | 97.8% |
| Vihtavuori N560 | <<locked>> | 92% | 51,619 psi | 79% | 3176 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 51,851 psi | 80% | 3156 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,758 psi | 67% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,890 psi | 71% | 2999 fps | 97.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,037 psi | 45% | 2703 fps | 97.3% |
| Winchester Supreme 780 | <<locked>> | 88% | 44,251 psi | 68% | 2930 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 81 powders for .300 PRC loaded with the .308 | 150gr | Impala LW CFN. Winchester StaBALL HD delivers the highest muzzle velocity at 3,360 fps; across all powders the maximum-charge window runs from 2,014 fps to 3,360 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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 | 150gr | Impala LW CFN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.