Load Specifications
Load data in caliber .300 PRC with .308 | 220gr | Nosler Custom Competition bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-25, Hodgdon Retumbo and ReloadSwiss RS 76.
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% | 55,100 psi | 85% | 2644 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,028 psi | 86% | 2661 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,725 psi | 89% | 2802 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 88% | 56,695 psi | 87% | 2726 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 58,552 psi | 90% | 2792 fps | 99.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,608 psi | 87% | 2769 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 48,907 psi | 75% | 2736 fps | 96.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,865 psi | 78% | 2733 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,000 psi | 88% | 2710 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,231 psi | 87% | 2717 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 58,813 psi | 90% | 2789 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,681 psi | 87% | 2697 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,376 psi | 87% | 2766 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,363 psi | 88% | 2785 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,505 psi | 82% | 2795 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,637 psi | 86% | 2703 fps | 97.9% |
| Bofors RP15 | <<locked>> | 94% | 57,957 psi | 89% | 2776 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 56,028 psi | 86% | 2779 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 58,813 psi | 90% | 2789 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 57,363 psi | 88% | 2657 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 58,218 psi | 90% | 2789 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 57,392 psi | 88% | 2713 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 58,030 psi | 89% | 2733 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,869 psi | 87% | 2713 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,246 psi | 88% | 2638 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 55,347 psi | 85% | 2848 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 58,117 psi | 89% | 2756 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,492 psi | 58% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,854 psi | 86% | 2651 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 58,784 psi | 90% | 2677 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,246 psi | 87% | 2654 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 58,581 psi | 90% | 2710 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 92% | 56,695 psi | 87% | 2776 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,630 psi | 72% | 2654 fps | 98.9% |
| Lovex S065 | <<locked>> | 82% | 56,202 psi | 86% | 2628 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 58,059 psi | 89% | 2677 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,666 psi | 87% | 2667 fps | 100% |
| Norma 204 | <<locked>> | 84% | 57,029 psi | 88% | 2710 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 47,094 psi | 72% | 2674 fps | 99.9% |
| Norma MRP | <<locked>> | 88% | 54,955 psi | 85% | 2749 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,856 psi | 89% | 2694 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,943 psi | 89% | 2802 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 56,840 psi | 87% | 2707 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,014 psi | 86% | 2733 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,508 psi | 59% | 1713 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,101 psi | 86% | 2684 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 58,537 psi | 90% | 2766 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 55,941 psi | 86% | 2841 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,056 psi | 85% | 2805 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 88% | 57,609 psi | 89% | 2697 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 56,057 psi | 86% | 2710 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 57,363 psi | 88% | 2657 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,202 psi | 86% | 2628 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 58,059 psi | 89% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 58,697 psi | 90% | 2635 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,651 psi | 86% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 55,376 psi | 85% | 2644 fps | 99.3% |
| Somchem S365 | <<locked>> | 84% | 55,376 psi | 85% | 2648 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,289 psi | 87% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,854 psi | 86% | 2635 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,086 psi | 86% | 2667 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 58,552 psi | 90% | 2740 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 84% | 58,668 psi | 90% | 2690 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 58,755 psi | 90% | 2723 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 58,508 psi | 90% | 2808 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 96% | 58,740 psi | 90% | 2795 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 98% | 55,825 psi | 86% | 2805 fps | 99% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 56,768 psi | 87% | 2861 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 55,042 psi | 85% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,624 psi | 89% | 2717 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 55,738 psi | 86% | 2782 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,086 psi | 86% | 2677 fps | 100% |
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% | 39,537 psi | 61% | 2392 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 52,373 psi | 81% | 2612 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 40,756 psi | 63% | 2507 fps | 96.1% |
| ADI AR 2209 | <<locked>> | 80% | 43,642 psi | 67% | 2513 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 80% | 39,044 psi | 60% | 2454 fps | 96.7% |
| ADI AR 2217 | <<locked>> | 86% | 35,447 psi | 55% | 2379 fps | 95.7% |
| ADI AR 2218 | <<locked>> | 98% | 45,687 psi | 70% | 2671 fps | 95% |
| ADI AR 2225 | <<locked>> | 82% | 28,297 psi | 44% | 2234 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,227 psi | 77% | 2615 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,526 psi | 67% | 2503 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,581 psi | 61% | 2464 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,334 psi | 59% | 2411 fps | 100% |
| Alliant Reloder-25 | 66.7 gr | 80% | 33,098 psi | 51% | 2349 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,728 psi | 66% | 2562 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 46,209 psi | 71% | 2667 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 46,267 psi | 71% | 2543 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 36,825 psi | 57% | 2402 fps | 97.2% |
| Bofors RP30 | <<locked>> | 84% | 35,041 psi | 54% | 2392 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 39,581 psi | 61% | 2464 fps | 98.1% |
| Bofors RP7 | <<locked>> | 80% | 54,012 psi | 83% | 2608 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 33,750 psi | 52% | 2336 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 53,795 psi | 83% | 2664 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,524 psi | 64% | 2454 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,872 psi | 63% | 2444 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,181 psi | 73% | 2500 fps | 100% |
| Hodgdon Retumbo | 67.4 gr | 80% | 32,300 psi | 50% | 2375 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 80% | 53,983 psi | 83% | 2697 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,210 psi | 43% | 1493 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,400 psi | 76% | 2556 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 55,187 psi | 85% | 2628 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,559 psi | 76% | 2559 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,946 psi | 66% | 2454 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 80% | 37,652 psi | 58% | 2434 fps | 96.3% |
| IMR 8133 Enduron | <<locked>> | 90% | 33,388 psi | 51% | 2375 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 52,939 psi | 81% | 2582 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,314 psi | 79% | 2579 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,243 psi | 53% | 2283 fps | 98.7% |
| Norma 204 | <<locked>> | 80% | 49,777 psi | 77% | 2598 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 29,370 psi | 45% | 2290 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 41,582 psi | 64% | 2526 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 50,981 psi | 78% | 2595 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,463 psi | 58% | 2444 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 80% | 49,777 psi | 77% | 2602 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,388 psi | 51% | 2329 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,863 psi | 44% | 1529 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,373 psi | 81% | 2635 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,734 psi | 78% | 2657 fps | 100% |
| ReloadSwiss RS 76 | 72.1 gr | 80% | 31,212 psi | 48% | 2349 fps | 97.1% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 37,826 psi | 58% | 2490 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 44,715 psi | 69% | 2490 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 80% | 43,062 psi | 66% | 2497 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 80% | 54,012 psi | 83% | 2608 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,939 psi | 81% | 2582 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,314 psi | 79% | 2579 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,793 psi | 80% | 2539 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,728 psi | 66% | 2490 fps | 98.8% |
| Somchem S361 | <<locked>> | 80% | 45,382 psi | 70% | 2480 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 48,530 psi | 75% | 2552 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,627 psi | 67% | 2477 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 52,344 psi | 81% | 2585 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,898 psi | 58% | 2362 fps | 98.1% |
| Vihtavuori N170 | <<locked>> | 94% | 51,242 psi | 79% | 2625 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 51,692 psi | 80% | 2595 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,685 psi | 66% | 2484 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,481 psi | 64% | 2516 fps | 97% |
| Vihtavuori N565 | <<locked>> | 82% | 36,840 psi | 57% | 2408 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 88% | 39,189 psi | 60% | 2507 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 94% | 45,977 psi | 71% | 2674 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,445 psi | 79% | 2543 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,795 psi | 83% | 2664 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,346 psi | 54% | 2457 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,001 psi | 62% | 2411 fps | 98.1% |
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 | 220gr | Nosler Custom Competition. Vihtavuori N570 delivers the highest muzzle velocity at 2,861 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,861 fps. Accurate 8700 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 220.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2217, ADI AR 2218 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. Alliant Reloder-25, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for .300 PRC with the .308 | 220gr | Nosler Custom Competition they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, 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.