Load Specifications
Load data in caliber .300 PRC with .308 | 200gr | Barnes X S bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 76, Hodgdon Retumbo and Accurate MAGPRO.
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>> | 90% | 55,448 psi | 85% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,333 psi | 87% | 2776 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,000 psi | 88% | 2900 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 88% | 55,869 psi | 86% | 2825 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 57,653 psi | 89% | 2890 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,550 psi | 85% | 2858 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,372 psi | 77% | 2828 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,246 psi | 87% | 2818 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,811 psi | 86% | 2818 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,204 psi | 90% | 2890 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,043 psi | 86% | 2805 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,259 psi | 85% | 2867 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,579 psi | 87% | 2894 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 52,678 psi | 81% | 2884 fps | 96.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 58,291 psi | 90% | 2844 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 57,232 psi | 88% | 2874 fps | 99.8% |
| Bofors RP30 | <<locked>> | 98% | 55,477 psi | 85% | 2877 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 58,204 psi | 90% | 2890 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 57,261 psi | 88% | 2762 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,217 psi | 88% | 2884 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 56,956 psi | 88% | 2818 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,377 psi | 88% | 2828 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,333 psi | 87% | 2812 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,811 psi | 87% | 2746 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,827 psi | 89% | 2999 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,261 psi | 88% | 2858 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,768 psi | 58% | 1752 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,434 psi | 85% | 2753 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,276 psi | 90% | 2779 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,173 psi | 86% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,914 psi | 89% | 2805 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 92% | 55,869 psi | 86% | 2874 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,253 psi | 71% | 2746 fps | 98.1% |
| Lovex S065 | <<locked>> | 82% | 56,231 psi | 87% | 2736 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 58,001 psi | 89% | 2785 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,869 psi | 87% | 2776 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,376 psi | 87% | 2808 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 46,804 psi | 72% | 2776 fps | 99.6% |
| Norma MRP | <<locked>> | 90% | 58,131 psi | 89% | 2910 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,522 psi | 88% | 2799 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,594 psi | 87% | 2894 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 56,275 psi | 87% | 2808 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 55,216 psi | 85% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,653 psi | 59% | 1791 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,927 psi | 86% | 2795 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,508 psi | 88% | 2871 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 58,697 psi | 90% | 2995 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 58,218 psi | 90% | 2959 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 56,971 psi | 88% | 2795 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 88% | 55,564 psi | 85% | 2808 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 57,261 psi | 88% | 2762 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,231 psi | 87% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 58,001 psi | 89% | 2785 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,610 psi | 90% | 2740 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 58,784 psi | 90% | 2861 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 58,566 psi | 90% | 2789 fps | 99% |
| Somchem S365 | <<locked>> | 86% | 58,668 psi | 90% | 2805 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,304 psi | 87% | 2785 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,564 psi | 85% | 2743 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,593 psi | 86% | 2766 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 58,363 psi | 90% | 2799 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,288 psi | 85% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,580 psi | 89% | 2904 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 96% | 58,378 psi | 90% | 2897 fps | 99.3% |
| Vihtavuori N568 | <<locked>> | 98% | 55,013 psi | 85% | 2897 fps | 98.1% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 55,666 psi | 86% | 2949 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 58,334 psi | 90% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,188 psi | 88% | 2825 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 58,610 psi | 90% | 2946 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,680 psi | 86% | 2776 fps | 99.7% |
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% | 40,698 psi | 63% | 2503 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 52,837 psi | 81% | 2723 fps | 100% |
| Accurate MAGPRO | 73.4 gr | 82% | 43,874 psi | 67% | 2664 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 43,598 psi | 67% | 2608 fps | 98% |
| ADI AR 2213 | <<locked>> | 80% | 39,247 psi | 60% | 2549 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 88% | 38,145 psi | 59% | 2523 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 84% | 31,111 psi | 48% | 2392 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,806 psi | 77% | 2720 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,613 psi | 67% | 2602 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,929 psi | 61% | 2566 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,769 psi | 60% | 2523 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,808 psi | 52% | 2454 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,844 psi | 66% | 2671 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 49,211 psi | 76% | 2818 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,892 psi | 75% | 2680 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 37,333 psi | 57% | 2503 fps | 96.3% |
| Bofors RP30 | <<locked>> | 86% | 37,942 psi | 58% | 2552 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 39,929 psi | 61% | 2566 fps | 97.3% |
| Bofors RP7 | <<locked>> | 80% | 54,056 psi | 83% | 2713 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 36,550 psi | 56% | 2487 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 53,519 psi | 82% | 2766 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,655 psi | 64% | 2549 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,046 psi | 63% | 2536 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,282 psi | 73% | 2605 fps | 100% |
| Hodgdon Retumbo | 67.7 gr | 80% | 33,011 psi | 51% | 2474 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 53,345 psi | 82% | 2795 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,413 psi | 44% | 1562 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,255 psi | 76% | 2651 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,839 psi | 84% | 2730 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,864 psi | 77% | 2667 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,105 psi | 66% | 2546 fps | 96.3% |
| IMR 7828 SSC | <<locked>> | 80% | 37,985 psi | 58% | 2530 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 94% | 38,479 psi | 59% | 2585 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 53,127 psi | 82% | 2690 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,634 psi | 79% | 2687 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 35,636 psi | 55% | 2395 fps | 98.3% |
| Norma 204 | <<locked>> | 80% | 49,559 psi | 76% | 2697 fps | 99% |
| Norma 217 | <<locked>> | 88% | 32,256 psi | 50% | 2448 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 41,742 psi | 64% | 2628 fps | 98.8% |
| Norma URP | <<locked>> | 80% | 51,010 psi | 78% | 2703 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,811 psi | 58% | 2539 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 49,632 psi | 76% | 2703 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,229 psi | 53% | 2434 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,109 psi | 45% | 1601 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,344 psi | 81% | 2743 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,183 psi | 77% | 2759 fps | 100% |
| ReloadSwiss RS 76 | 72.4 gr | 80% | 32,097 psi | 49% | 2451 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 41,002 psi | 63% | 2651 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 44,817 psi | 69% | 2585 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 80% | 43,323 psi | 67% | 2595 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 80% | 54,056 psi | 83% | 2713 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,127 psi | 82% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,634 psi | 79% | 2687 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,996 psi | 80% | 2641 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,975 psi | 66% | 2592 fps | 98% |
| Somchem S361 | <<locked>> | 80% | 45,556 psi | 70% | 2575 fps | 96.7% |
| Somchem S365 | <<locked>> | 80% | 48,588 psi | 75% | 2664 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,121 psi | 68% | 2582 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 80% | 52,228 psi | 80% | 2690 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,406 psi | 59% | 2461 fps | 97.3% |
| Vihtavuori N550 | <<locked>> | 80% | 51,779 psi | 80% | 2700 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,410 psi | 67% | 2595 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,626 psi | 64% | 2615 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 84% | 39,972 psi | 61% | 2566 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 92% | 45,063 psi | 69% | 2720 fps | 95.8% |
| Vihtavuori N570 | <<locked>> | 98% | 52,185 psi | 80% | 2890 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,082 psi | 79% | 2648 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,519 psi | 82% | 2766 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,418 psi | 54% | 2569 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,364 psi | 62% | 2507 fps | 97.3% |
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 76 powders for .300 PRC loaded with the .308 | 200gr | Barnes X S. Hodgdon Retumbo delivers the highest muzzle velocity at 2,999 fps; across all powders the maximum-charge window runs from 1,752 fps to 2,999 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 1:11.0 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. ReloadSwiss RS 76, Hodgdon Retumbo, Accurate MAGPRO rank at the top here: for .300 PRC with the .308 | 200gr | Barnes X S 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.