Load Specifications
Load data in caliber .300 PRC with .308 | 150gr | Impala LWH CHP 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% | 56,608 psi | 87% | 3153 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 58,015 psi | 89% | 3202 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 58,015 psi | 89% | 3291 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 84% | 58,305 psi | 90% | 3153 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,580 psi | 89% | 3232 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 96% | 55,564 psi | 85% | 3228 fps | 96.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,119 psi | 65% | 2992 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,565 psi | 87% | 3133 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,624 psi | 89% | 3248 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,347 psi | 85% | 3212 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,305 psi | 88% | 3219 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,419 psi | 85% | 3228 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,420 psi | 87% | 3215 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,127 psi | 80% | 3202 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,000 psi | 88% | 3310 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 58,102 psi | 89% | 3271 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 57,899 psi | 89% | 3153 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 55,419 psi | 85% | 3228 fps | 98.1% |
| Bofors RP7 | <<locked>> | 86% | 56,652 psi | 87% | 3133 fps | 98.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,488 psi | 79% | 3136 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 82% | 57,696 psi | 89% | 3166 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,405 psi | 85% | 3182 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 86% | 57,928 psi | 89% | 3192 fps | 98.5% |
| 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% | 58,334 psi | 90% | 3169 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,169 psi | 79% | 3251 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 86% | 55,550 psi | 85% | 3215 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 57% | 2018 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,943 psi | 89% | 3136 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,624 psi | 89% | 3166 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,682 psi | 89% | 3156 fps | 99.2% |
| IMR 4831 | <<locked>> | 90% | 57,740 psi | 89% | 3182 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,710 psi | 87% | 3150 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 98% | 56,855 psi | 87% | 3264 fps | 97.1% |
| Lovex S065 | <<locked>> | 88% | 58,682 psi | 90% | 3159 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 56,768 psi | 87% | 3150 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,983 psi | 83% | 3110 fps | 99.4% |
| Norma 204 | <<locked>> | 88% | 54,984 psi | 85% | 3159 fps | 97.6% |
| Norma MRP | <<locked>> | 94% | 55,187 psi | 85% | 3255 fps | 99.1% |
| Norma URP | <<locked>> | 88% | 55,753 psi | 86% | 3173 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,798 psi | 89% | 3287 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 90% | 58,218 psi | 90% | 3232 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,072 psi | 86% | 3219 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,956 psi | 58% | 2064 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,305 psi | 88% | 3143 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 58,552 psi | 90% | 3261 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,435 psi | 88% | 3215 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,332 psi | 85% | 3238 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,866 psi | 80% | 3251 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 58,189 psi | 90% | 3153 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,709 psi | 86% | 3143 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 94% | 57,014 psi | 88% | 3212 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 86% | 56,652 psi | 87% | 3133 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 58,682 psi | 90% | 3159 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 56,768 psi | 87% | 3150 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,419 psi | 85% | 3146 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,638 psi | 89% | 3015 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 58,059 psi | 89% | 3104 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,550 psi | 87% | 3205 fps | 98.2% |
| Somchem S355 | <<locked>> | 84% | 57,653 psi | 89% | 3143 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,580 psi | 89% | 3130 fps | 96.5% |
| Somchem S365 | <<locked>> | 90% | 55,854 psi | 86% | 3179 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,798 psi | 89% | 3186 fps | 99% |
| Vihtavuori N150 | <<locked>> | 86% | 58,798 psi | 90% | 3110 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,609 psi | 89% | 3166 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,014 psi | 88% | 3159 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 88% | 57,029 psi | 88% | 3173 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,811 psi | 86% | 3196 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,042 psi | 85% | 3238 fps | 96.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,056 psi | 85% | 3212 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,942 psi | 88% | 3117 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,608 psi | 86% | 3186 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 57,087 psi | 88% | 3356 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,508 psi | 88% | 3173 fps | 98.2% |
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% | 36,318 psi | 56% | 2743 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 44,759 psi | 69% | 2963 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 54,317 psi | 84% | 3222 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 51,866 psi | 80% | 3045 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 44,860 psi | 69% | 2982 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 48,791 psi | 75% | 3094 fps | 95% |
| ADI AR 2225 | <<locked>> | 98% | 39,624 psi | 61% | 2927 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,156 psi | 82% | 3077 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,090 psi | 65% | 2956 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,341 psi | 74% | 3091 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 44,730 psi | 69% | 2976 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 90% | 45,701 psi | 70% | 3038 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,140 psi | 49% | 2707 fps | 97.7% |
| Alliant Reloder-25 | <<locked>> | 86% | 34,069 psi | 52% | 2772 fps | 95.1% |
| Alliant Reloder-26 | 76.3 gr | 80% | 34,853 psi | 54% | 2838 fps | 96.4% |
| Bofors RP15 | <<locked>> | 92% | 45,136 psi | 69% | 3025 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 54,549 psi | 84% | 3100 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 45,701 psi | 70% | 3038 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 47,340 psi | 73% | 2959 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 98% | 48,211 psi | 74% | 3068 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 54,259 psi | 83% | 3107 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 45,687 psi | 70% | 2995 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 80% | 48,225 psi | 74% | 3012 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 51,967 psi | 80% | 3097 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,505 psi | 84% | 3146 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,118 psi | 62% | 2844 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 42,496 psi | 65% | 3045 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 44,875 psi | 69% | 3012 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 43% | 1804 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,578 psi | 84% | 3084 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,627 psi | 66% | 2874 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,182 psi | 74% | 2979 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 42,424 psi | 65% | 2900 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 50,343 psi | 77% | 3031 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 50,082 psi | 77% | 3133 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,340 psi | 71% | 2936 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 44,744 psi | 69% | 2920 fps | 97.3% |
| Lovex S071 | <<locked>> | 86% | 35,549 psi | 55% | 2726 fps | 95.2% |
| Norma 204 | <<locked>> | 82% | 45,252 psi | 70% | 2966 fps | 95.3% |
| Norma MRP | 77.8 gr | 84% | 39,581 psi | 61% | 2930 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 43,497 psi | 67% | 2940 fps | 98.9% |
| Ramshot Grand | <<locked>> | 94% | 50,270 psi | 77% | 3146 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 42,279 psi | 65% | 2927 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 42,453 psi | 65% | 2949 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 44% | 1850 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,751 psi | 83% | 3084 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,068 psi | 79% | 3143 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,208 psi | 68% | 2976 fps | 98.9% |
| ReloadSwiss RS 70 | 75.6 gr | 80% | 42,235 psi | 65% | 2976 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 39,537 psi | 61% | 2956 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 51,416 psi | 79% | 3041 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 49,255 psi | 76% | 3022 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 86% | 44,164 psi | 68% | 2966 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 47,340 psi | 73% | 2959 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,340 psi | 71% | 2936 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,744 psi | 69% | 2920 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,040 psi | 80% | 3091 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,155 psi | 79% | 2917 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,382 psi | 70% | 2874 fps | 97.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 43,772 psi | 67% | 2959 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 51,082 psi | 79% | 3031 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,056 psi | 83% | 3071 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 40,422 psi | 62% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 42,308 psi | 65% | 2890 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 48,907 psi | 75% | 2953 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,846 psi | 69% | 2936 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 88% | 41,626 psi | 64% | 2864 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 44,411 psi | 68% | 2940 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,129 psi | 56% | 2799 fps | 97.8% |
| Vihtavuori N560 | <<locked>> | 92% | 51,576 psi | 79% | 3173 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 51,663 psi | 79% | 3153 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,729 psi | 67% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,847 psi | 71% | 2999 fps | 97.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,008 psi | 45% | 2700 fps | 97.3% |
| Winchester Supreme 780 | <<locked>> | 88% | 44,193 psi | 68% | 2927 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 LWH CHP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,356 fps; across all powders the maximum-charge window runs from 2,018 fps to 3,356 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 1:12.5 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 LWH CHP 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.