Load Specifications
Load data in caliber .300 PRC with .308 | 200gr | Swift A-Frame bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Vihtavuori N560.
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>> | 92% | 56,739 psi | 87% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,667 psi | 89% | 2818 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 55,376 psi | 85% | 2890 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 58,421 psi | 90% | 2881 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 56,231 psi | 87% | 2887 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,317 psi | 84% | 2858 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,733 psi | 75% | 2818 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 58,653 psi | 90% | 2867 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,827 psi | 89% | 2867 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,492 psi | 87% | 2884 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,986 psi | 89% | 2848 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,595 psi | 89% | 2917 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,636 psi | 84% | 2881 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,261 psi | 88% | 2848 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 55,666 psi | 86% | 2871 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,305 psi | 88% | 2923 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 56,492 psi | 87% | 2884 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 55,753 psi | 86% | 2762 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 55,840 psi | 86% | 2881 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 55,303 psi | 85% | 2815 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,841 psi | 89% | 2828 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 55,985 psi | 86% | 2828 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 58,595 psi | 90% | 2864 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 58,813 psi | 90% | 2792 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,420 psi | 87% | 2992 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,796 psi | 86% | 2851 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,420 psi | 58% | 1762 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,450 psi | 88% | 2802 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,985 psi | 88% | 2782 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,943 psi | 89% | 2808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,753 psi | 87% | 2808 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 94% | 58,363 psi | 90% | 2930 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,251 psi | 68% | 2723 fps | 97.7% |
| Lovex S065 | <<locked>> | 84% | 57,856 psi | 89% | 2779 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,188 psi | 86% | 2782 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 58,073 psi | 89% | 2812 fps | 100% |
| Norma 204 | <<locked>> | 86% | 58,798 psi | 90% | 2864 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 44,701 psi | 69% | 2753 fps | 99.4% |
| Norma MRP | <<locked>> | 90% | 56,492 psi | 87% | 2904 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,840 psi | 86% | 2795 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 55,347 psi | 85% | 2894 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 58,479 psi | 90% | 2861 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,827 psi | 89% | 2884 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,377 psi | 59% | 1804 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,711 psi | 89% | 2838 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,188 psi | 86% | 2867 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 57,450 psi | 88% | 2992 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,536 psi | 87% | 2949 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 88% | 55,651 psi | 86% | 2795 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 57,464 psi | 88% | 2858 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 55,753 psi | 86% | 2762 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,856 psi | 89% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,188 psi | 86% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,072 psi | 88% | 2740 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,043 psi | 88% | 2854 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 57,145 psi | 88% | 2789 fps | 99% |
| Somchem S365 | <<locked>> | 86% | 56,710 psi | 87% | 2799 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,001 psi | 89% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 57,972 psi | 89% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,493 psi | 88% | 2789 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,580 psi | 89% | 2815 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 56,739 psi | 87% | 2795 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,579 psi | 87% | 2825 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,130 psi | 86% | 2900 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 96% | 56,362 psi | 87% | 2887 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,363 psi | 88% | 2949 fps | 98.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,172 psi | 83% | 2940 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,014 psi | 88% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,521 psi | 85% | 2818 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,898 psi | 88% | 2936 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,885 psi | 89% | 2828 fps | 99.9% |
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% | 37,913 psi | 58% | 2470 fps | 98.9% |
| Accurate 4350 | <<locked>> | 80% | 50,357 psi | 77% | 2710 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 41,814 psi | 64% | 2641 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 41,974 psi | 65% | 2595 fps | 97.8% |
| ADI AR 2213 | <<locked>> | 80% | 37,463 psi | 58% | 2526 fps | 95% |
| ADI AR 2217 | <<locked>> | 90% | 38,856 psi | 60% | 2562 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 86% | 30,893 psi | 48% | 2408 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,196 psi | 74% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,887 psi | 64% | 2589 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,869 psi | 58% | 2539 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,550 psi | 56% | 2493 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,691 psi | 49% | 2418 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,640 psi | 63% | 2644 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,587 psi | 73% | 2677 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 35,259 psi | 54% | 2474 fps | 95.6% |
| Bofors RP30 | <<locked>> | 86% | 35,752 psi | 55% | 2516 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 37,869 psi | 58% | 2539 fps | 96.7% |
| Bofors RP7 | <<locked>> | 80% | 52,431 psi | 81% | 2710 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 37,057 psi | 57% | 2520 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 51,953 psi | 80% | 2762 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 54,186 psi | 83% | 2772 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 39,871 psi | 61% | 2533 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,247 psi | 60% | 2520 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,527 psi | 70% | 2598 fps | 100% |
| Hodgdon Retumbo | 71.7 gr | 82% | 33,069 psi | 51% | 2500 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 51,924 psi | 80% | 2792 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,007 psi | 43% | 1572 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,761 psi | 73% | 2648 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,606 psi | 82% | 2730 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,776 psi | 74% | 2654 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,524 psi | 64% | 2536 fps | 96% |
| IMR 7828 SSC | <<locked>> | 82% | 38,696 psi | 60% | 2569 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 36,216 psi | 56% | 2549 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 51,184 psi | 79% | 2680 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,676 psi | 76% | 2677 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 32,808 psi | 50% | 2356 fps | 97.5% |
| Norma 204 | <<locked>> | 80% | 48,037 psi | 74% | 2690 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 31,792 psi | 49% | 2454 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 39,871 psi | 61% | 2605 fps | 98.5% |
| Norma URP | <<locked>> | 80% | 49,197 psi | 76% | 2697 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 38,479 psi | 59% | 2579 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 47,979 psi | 74% | 2697 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 31,937 psi | 49% | 2395 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,761 psi | 44% | 1611 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,488 psi | 78% | 2733 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,660 psi | 75% | 2753 fps | 100% |
| ReloadSwiss RS 76 | 76.7 gr | 82% | 32,082 psi | 49% | 2470 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,611 psi | 64% | 2680 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 43,178 psi | 66% | 2575 fps | 97% |
| Rottweil R 905 | <<locked>> | 80% | 41,365 psi | 64% | 2579 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 80% | 52,431 psi | 81% | 2710 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,184 psi | 79% | 2680 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,676 psi | 76% | 2677 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,140 psi | 77% | 2635 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,031 psi | 63% | 2572 fps | 97.7% |
| Somchem S361 | <<locked>> | 80% | 43,903 psi | 68% | 2566 fps | 96.5% |
| Somchem S365 | <<locked>> | 80% | 46,543 psi | 72% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,916 psi | 64% | 2559 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 80% | 54,447 psi | 84% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,488 psi | 78% | 2687 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,376 psi | 56% | 2438 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 80% | 49,966 psi | 77% | 2694 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,973 psi | 63% | 2569 fps | 100% |
| Vihtavuori N560 | 72.6 gr | 80% | 39,856 psi | 61% | 2598 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 86% | 40,277 psi | 62% | 2595 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 92% | 43,149 psi | 66% | 2700 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 98% | 50,473 psi | 78% | 2874 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,632 psi | 76% | 2644 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,953 psi | 80% | 2762 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,199 psi | 51% | 2530 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,334 psi | 59% | 2487 fps | 96.8% |
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 78 powders for .300 PRC loaded with the .308 | 200gr | Swift A-Frame. Hodgdon Retumbo delivers the highest muzzle velocity at 2,992 fps; across all powders the maximum-charge window runs from 1,762 fps to 2,992 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 200.0 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 2218, ADI AR 2225 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. Hodgdon Retumbo, ReloadSwiss RS 76, Vihtavuori N560 rank at the top here: for .300 PRC with the .308 | 200gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, IMR 7977 Enduron 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.