Load Specifications
Load data in caliber .300 PRC with .308 | 180gr | Speer Magnum Tip Soft Point bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Ramshot Grand.
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>> | 94% | 56,797 psi | 87% | 2933 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 58,073 psi | 89% | 2969 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 55,448 psi | 85% | 3028 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 82% | 58,450 psi | 90% | 2920 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 55,216 psi | 85% | 2969 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 56,753 psi | 87% | 3035 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,894 psi | 78% | 2927 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,556 psi | 70% | 2887 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,158 psi | 85% | 2969 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,217 psi | 86% | 2979 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 58,378 psi | 90% | 3015 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,840 psi | 87% | 3028 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 58,131 psi | 89% | 2999 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,464 psi | 88% | 3061 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,708 psi | 84% | 3031 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,218 psi | 90% | 2992 fps | 96.6% |
| Bofors RP15 | <<locked>> | 96% | 55,796 psi | 86% | 3009 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,490 psi | 82% | 3002 fps | 98.7% |
| Bofors RP5 | <<locked>> | 94% | 56,840 psi | 87% | 3028 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 56,507 psi | 87% | 2913 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,057 psi | 86% | 3018 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 84% | 55,941 psi | 86% | 2966 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 58,537 psi | 90% | 2979 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 56,536 psi | 87% | 2969 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,492 psi | 85% | 2953 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,637 psi | 86% | 2894 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,405 psi | 87% | 3133 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,521 psi | 87% | 3002 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 57% | 1857 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 58,204 psi | 90% | 2953 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,943 psi | 89% | 2936 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 58,320 psi | 90% | 2959 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,334 psi | 88% | 2949 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 96% | 58,465 psi | 90% | 3071 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 58,682 psi | 90% | 2933 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,826 psi | 87% | 2933 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,885 psi | 89% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,550 psi | 85% | 2953 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 41,162 psi | 63% | 2808 fps | 97.9% |
| Norma MRP | <<locked>> | 92% | 56,637 psi | 87% | 3048 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 56,347 psi | 87% | 2949 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,419 psi | 85% | 3031 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 86% | 55,158 psi | 85% | 2953 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,870 psi | 89% | 3025 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,985 psi | 58% | 1900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 58,189 psi | 90% | 2992 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,478 psi | 87% | 3018 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,246 psi | 88% | 3133 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,112 psi | 80% | 3012 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 82% | 58,015 psi | 89% | 2913 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 56,318 psi | 87% | 2940 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 57,812 psi | 89% | 3005 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 56,507 psi | 87% | 2913 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 58,682 psi | 90% | 2933 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,826 psi | 87% | 2933 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,435 psi | 88% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,928 psi | 89% | 2887 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,363 psi | 88% | 2999 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 57,508 psi | 88% | 2904 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,841 psi | 89% | 2933 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 57,029 psi | 88% | 2953 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 58,465 psi | 90% | 2976 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 58,682 psi | 90% | 2874 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 58,059 psi | 89% | 2940 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,928 psi | 89% | 2953 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 57,319 psi | 88% | 2946 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,652 psi | 87% | 2972 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,405 psi | 87% | 3041 fps | 98.4% |
| Vihtavuori N565 | <<locked>> | 98% | 56,463 psi | 87% | 3025 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,127 psi | 82% | 3015 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,624 psi | 89% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,144 psi | 86% | 2969 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 56,289 psi | 87% | 3084 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 58,566 psi | 90% | 2972 fps | 99.6% |
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% | 35,491 psi | 55% | 2539 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 47,413 psi | 73% | 2799 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 44,991 psi | 69% | 2831 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 55,027 psi | 85% | 2871 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 39,421 psi | 61% | 2664 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 86% | 43,207 psi | 66% | 2779 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 94% | 41,539 psi | 64% | 2736 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 90% | 32,793 psi | 50% | 2569 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,237 psi | 70% | 2802 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,533 psi | 81% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,494 psi | 61% | 2661 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,884 psi | 58% | 2661 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,113 psi | 52% | 2566 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,602 psi | 46% | 2467 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,376 psi | 58% | 2707 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,694 psi | 84% | 2930 fps | 95.8% |
| Bofors RP15 | <<locked>> | 84% | 37,565 psi | 58% | 2651 fps | 95.2% |
| Bofors RP30 | <<locked>> | 92% | 40,698 psi | 63% | 2753 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 37,884 psi | 58% | 2661 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 49,850 psi | 77% | 2802 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 39,871 psi | 61% | 2703 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 49,052 psi | 75% | 2848 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 51,445 psi | 79% | 2864 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 43,149 psi | 66% | 2723 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 86% | 45,310 psi | 70% | 2769 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,815 psi | 66% | 2687 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 37,594 psi | 58% | 2736 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 48,675 psi | 75% | 2871 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 43% | 1660 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,208 psi | 70% | 2730 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,227 psi | 79% | 2828 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 44,962 psi | 69% | 2740 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 44,715 psi | 69% | 2723 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 86% | 41,582 psi | 64% | 2756 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 48,820 psi | 75% | 2776 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 47,036 psi | 72% | 2766 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 30,545 psi | 47% | 2411 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 45,324 psi | 70% | 2769 fps | 97.4% |
| Norma 217 | <<locked>> | 94% | 33,678 psi | 52% | 2618 fps | 95% |
| Norma MRP | 74.2 gr | 80% | 37,043 psi | 57% | 2667 fps | 96.7% |
| Norma URP | <<locked>> | 80% | 46,340 psi | 71% | 2782 fps | 100% |
| Ramshot Grand | 79.1 gr | 86% | 41,379 psi | 64% | 2762 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 45,194 psi | 70% | 2779 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 34,374 psi | 53% | 2572 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 44% | 1699 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,355 psi | 73% | 2818 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,455 psi | 70% | 2835 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 34,374 psi | 53% | 2644 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,831 psi | 69% | 2871 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 54,331 psi | 84% | 2861 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,799 psi | 63% | 2648 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 38,928 psi | 60% | 2648 fps | 96% |
| Rottweil R 907 | <<locked>> | 80% | 49,850 psi | 77% | 2802 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,820 psi | 75% | 2776 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 47,036 psi | 72% | 2766 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,983 psi | 83% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,732 psi | 73% | 2723 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,595 psi | 59% | 2641 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 54,114 psi | 83% | 2854 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 44,309 psi | 68% | 2694 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 43,482 psi | 67% | 2740 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,465 psi | 61% | 2631 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 51,692 psi | 80% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,790 psi | 74% | 2779 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 36,564 psi | 56% | 2559 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 47,079 psi | 72% | 2779 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,203 psi | 59% | 2644 fps | 99.5% |
| Vihtavuori N560 | 77.9 gr | 84% | 42,757 psi | 66% | 2785 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 90% | 43,033 psi | 66% | 2776 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 96% | 46,093 psi | 71% | 2884 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,905 psi | 72% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,052 psi | 75% | 2848 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,284 psi | 47% | 2579 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 38,537 psi | 59% | 2612 fps | 95.7% |
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 79 powders for .300 PRC loaded with the .308 | 180gr | Speer Magnum Tip Soft Point. Hodgdon Retumbo delivers the highest muzzle velocity at 3,133 fps; across all powders the maximum-charge window runs from 1,857 fps to 3,133 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 180.0 gr projectile in 0.308" calls for a 1:15.0 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. Vihtavuori N560, Norma MRP, Ramshot Grand rank at the top here: for .300 PRC with the .308 | 180gr | Speer Magnum Tip Soft Point they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 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.