Load Specifications
Load data in caliber .300 PRC with .308 | 175gr | Prvi Partizan FMJ BT bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand and Alliant Reloder-26.
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% | 57,812 psi | 89% | 2982 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,593 psi | 86% | 2969 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,565 psi | 87% | 3081 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 56,550 psi | 87% | 2927 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,173 psi | 86% | 3018 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 57,899 psi | 89% | 3081 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,428 psi | 75% | 2907 fps | 97.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,105 psi | 66% | 2861 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,870 psi | 89% | 2949 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,333 psi | 87% | 3022 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,609 psi | 89% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,825 psi | 86% | 3005 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,783 psi | 89% | 3077 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 58,711 psi | 90% | 3045 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,505 psi | 84% | 3051 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,550 psi | 85% | 3084 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 56,710 psi | 87% | 3058 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,357 psi | 77% | 2979 fps | 97.8% |
| Bofors RP5 | <<locked>> | 96% | 57,783 psi | 89% | 3077 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 57,957 psi | 89% | 2966 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,447 psi | 82% | 3002 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 86% | 57,174 psi | 88% | 3018 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,202 psi | 86% | 2976 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 57,682 psi | 89% | 3015 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,579 psi | 87% | 2999 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,666 psi | 87% | 2943 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,301 psi | 82% | 3114 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 57,899 psi | 89% | 3058 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,043 psi | 57% | 1873 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,970 psi | 86% | 2949 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,738 psi | 86% | 2933 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 55,825 psi | 86% | 2956 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 58,755 psi | 90% | 3002 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 55,492 psi | 85% | 3054 fps | 98.3% |
| Lovex S065 | <<locked>> | 86% | 56,405 psi | 87% | 2933 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 58,189 psi | 90% | 2982 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,158 psi | 85% | 2946 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,971 psi | 88% | 3005 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 38,667 psi | 59% | 2779 fps | 96.7% |
| Norma MRP | <<locked>> | 94% | 57,740 psi | 89% | 3100 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 57,609 psi | 89% | 3005 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,173 psi | 86% | 3077 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 56,405 psi | 87% | 3009 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 58,798 psi | 90% | 3071 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,913 psi | 58% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 58,639 psi | 90% | 2976 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,188 psi | 88% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,419 psi | 85% | 2986 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,740 psi | 89% | 3074 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,940 psi | 83% | 3114 fps | 100% |
| Rottweil R 903 | <<locked>> | 82% | 55,651 psi | 86% | 2913 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,392 psi | 88% | 2986 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 55,317 psi | 85% | 2995 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 57,957 psi | 89% | 2966 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,405 psi | 87% | 2933 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 58,189 psi | 90% | 2982 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,159 psi | 88% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,521 psi | 85% | 2785 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,695 psi | 86% | 2887 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 58,566 psi | 90% | 3051 fps | 99.5% |
| Somchem S355 | <<locked>> | 84% | 58,813 psi | 90% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,419 psi | 85% | 2920 fps | 97.6% |
| Somchem S365 | <<locked>> | 90% | 57,972 psi | 89% | 3005 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,709 psi | 86% | 2969 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 56,507 psi | 87% | 2881 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,811 psi | 86% | 2940 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,245 psi | 85% | 2946 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 58,697 psi | 90% | 3002 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,421 psi | 88% | 3022 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,522 psi | 88% | 3094 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,232 psi | 88% | 3071 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,158 psi | 85% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,392 psi | 88% | 3022 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,681 psi | 87% | 3130 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,796 psi | 86% | 2963 fps | 99.1% |
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>> | 80% | 33,663 psi | 52% | 2523 fps | 96.3% |
| Accurate 4350 | <<locked>> | 80% | 45,136 psi | 69% | 2789 fps | 99.8% |
| Accurate MAGPRO | 83.2 gr | 90% | 49,081 psi | 76% | 2946 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 53,156 psi | 82% | 2874 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 40,335 psi | 62% | 2713 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 88% | 44,019 psi | 68% | 2825 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 96% | 42,279 psi | 65% | 2779 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 94% | 35,520 psi | 55% | 2674 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,360 psi | 84% | 2897 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,221 psi | 66% | 2795 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,908 psi | 77% | 2920 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 40,335 psi | 62% | 2710 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,464 psi | 59% | 2707 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,271 psi | 50% | 2552 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,124 psi | 46% | 2510 fps | 95.2% |
| Alliant Reloder-26 | 74.8 gr | 80% | 35,317 psi | 54% | 2687 fps | 98.2% |
| Bofors RP15 | <<locked>> | 88% | 40,857 psi | 63% | 2759 fps | 95.9% |
| Bofors RP30 | <<locked>> | 94% | 41,002 psi | 63% | 2792 fps | 95.3% |
| Bofors RP5 | <<locked>> | 84% | 38,464 psi | 59% | 2707 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 48,066 psi | 74% | 2799 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 92% | 40,654 psi | 63% | 2746 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 46,934 psi | 72% | 2841 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 49,429 psi | 76% | 2858 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 88% | 47,065 psi | 72% | 2831 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,180 psi | 71% | 2815 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,901 psi | 63% | 2680 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 38,232 psi | 59% | 2779 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 46,354 psi | 71% | 2861 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,673 psi | 43% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,511 psi | 67% | 2726 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,313 psi | 76% | 2822 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 43,047 psi | 66% | 2736 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 45,571 psi | 70% | 2766 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 88% | 42,264 psi | 65% | 2799 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 46,847 psi | 72% | 2772 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 45,266 psi | 70% | 2759 fps | 98.7% |
| Lovex S071 | <<locked>> | 82% | 30,980 psi | 48% | 2451 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 43,381 psi | 67% | 2759 fps | 96.5% |
| Norma 217 | <<locked>> | 98% | 36,187 psi | 56% | 2717 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 35,128 psi | 54% | 2651 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 44,411 psi | 68% | 2779 fps | 99.8% |
| Ramshot Grand | 79.2 gr | 88% | 42,177 psi | 65% | 2808 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 43,192 psi | 66% | 2772 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 88% | 37,565 psi | 58% | 2680 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,355 psi | 44% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 54,955 psi | 85% | 2917 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,026 psi | 82% | 2966 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,179 psi | 70% | 2812 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,352 psi | 67% | 2825 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,969 psi | 54% | 2687 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 52,214 psi | 80% | 2864 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 44,556 psi | 69% | 2756 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 82% | 39,552 psi | 61% | 2694 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 48,066 psi | 74% | 2799 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,847 psi | 72% | 2772 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 45,266 psi | 70% | 2759 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,490 psi | 82% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,301 psi | 80% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,905 psi | 71% | 2720 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 39,204 psi | 60% | 2687 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 51,953 psi | 80% | 2854 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,513 psi | 70% | 2746 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 41,350 psi | 64% | 2736 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,637 psi | 58% | 2618 fps | 96% |
| Vihtavuori N150 | <<locked>> | 80% | 49,792 psi | 77% | 2779 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,701 psi | 70% | 2772 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 37,188 psi | 57% | 2602 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 45,252 psi | 70% | 2779 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 36,303 psi | 56% | 2635 fps | 99% |
| Vihtavuori N560 | <<locked>> | 88% | 46,630 psi | 72% | 2897 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 92% | 43,468 psi | 67% | 2815 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,802 psi | 69% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,934 psi | 72% | 2841 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,689 psi | 44% | 2556 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,450 psi | 61% | 2661 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 82 powders for .300 PRC loaded with the .308 | 175gr | Prvi Partizan FMJ BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,130 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,130 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 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 175.0 gr projectile in 0.308" calls for a 1:12.0 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. Accurate MAGPRO, Ramshot Grand, Alliant Reloder-26 rank at the top here: for .300 PRC with the .308 | 175gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 7977 Enduron, IMR 8133 Enduron, Vihtavuori N170 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.