Load Specifications
Load data in caliber .300 PRC with .308 | 220gr | Woodleigh RN SN 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 ReloadSwiss RS 80.
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% | 56,594 psi | 87% | 2667 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 57,551 psi | 89% | 2684 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 58,465 psi | 90% | 2818 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 55,434 psi | 85% | 2769 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 88% | 58,189 psi | 90% | 2753 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 56,362 psi | 87% | 2766 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 58,291 psi | 90% | 2795 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 50,517 psi | 78% | 2772 fps | 96.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,663 psi | 81% | 2762 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 58,349 psi | 90% | 2749 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 58,566 psi | 90% | 2733 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,682 psi | 89% | 2740 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,710 psi | 87% | 2759 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 58,247 psi | 90% | 2720 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 58,073 psi | 89% | 2789 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 54,911 psi | 84% | 2756 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 55,477 psi | 85% | 2828 fps | 98% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 56,811 psi | 87% | 2726 fps | 98.3% |
| Bofors RP15 | <<locked>> | 92% | 55,898 psi | 86% | 2749 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 57,841 psi | 89% | 2805 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 56,710 psi | 87% | 2759 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 58,697 psi | 90% | 2680 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 56,014 psi | 86% | 2762 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 58,769 psi | 90% | 2736 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 55,666 psi | 86% | 2703 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 58,450 psi | 90% | 2743 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 58,668 psi | 90% | 2657 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,029 psi | 88% | 2874 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,695 psi | 58% | 1683 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,116 psi | 88% | 2674 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 57,653 psi | 89% | 2674 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 56,318 psi | 87% | 2684 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 92% | 58,450 psi | 90% | 2805 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,327 psi | 74% | 2680 fps | 99.2% |
| Lovex S065 | <<locked>> | 82% | 57,319 psi | 88% | 2648 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 55,811 psi | 86% | 2651 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 58,131 psi | 89% | 2687 fps | 100% |
| Norma 204 | <<locked>> | 84% | 58,247 psi | 90% | 2733 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 48,892 psi | 75% | 2703 fps | 100% |
| Norma MRP | <<locked>> | 88% | 56,695 psi | 87% | 2779 fps | 100% |
| Norma URP | <<locked>> | 82% | 55,637 psi | 86% | 2664 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 55,506 psi | 85% | 2769 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 58,088 psi | 89% | 2726 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 57,798 psi | 89% | 2759 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,537 psi | 59% | 1722 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,508 psi | 88% | 2707 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 56,101 psi | 86% | 2736 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 57,957 psi | 89% | 2867 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 56,971 psi | 88% | 2835 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 58,798 psi | 90% | 2720 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 88% | 57,348 psi | 88% | 2730 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 58,697 psi | 90% | 2680 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 57,319 psi | 88% | 2648 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 55,811 psi | 86% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,275 psi | 87% | 2608 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 56,971 psi | 88% | 2730 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 56,550 psi | 87% | 2664 fps | 99.5% |
| Somchem S365 | <<locked>> | 84% | 56,840 psi | 87% | 2671 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,711 psi | 89% | 2703 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 57,246 psi | 88% | 2657 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,624 psi | 89% | 2694 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 56,318 psi | 87% | 2713 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 82% | 56,376 psi | 87% | 2664 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 56,695 psi | 87% | 2697 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 56,260 psi | 87% | 2779 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 94% | 56,753 psi | 87% | 2769 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 98% | 57,754 psi | 89% | 2835 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 98% | 54,911 psi | 84% | 2835 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,405 psi | 87% | 2612 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 57,754 psi | 89% | 2808 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,609 psi | 89% | 2703 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% | 40,654 psi | 63% | 2418 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 53,664 psi | 83% | 2631 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 44,338 psi | 68% | 2585 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 80% | 41,959 psi | 65% | 2533 fps | 96.6% |
| ADI AR 2209 | <<locked>> | 80% | 44,759 psi | 69% | 2536 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 80% | 40,059 psi | 62% | 2480 fps | 97.2% |
| ADI AR 2217 | <<locked>> | 84% | 34,098 psi | 52% | 2349 fps | 95.3% |
| ADI AR 2218 | <<locked>> | 98% | 47,094 psi | 72% | 2707 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 80% | 27,267 psi | 42% | 2205 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,005 psi | 69% | 2533 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,358 psi | 79% | 2635 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,585 psi | 69% | 2530 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,669 psi | 63% | 2487 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,392 psi | 61% | 2434 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,069 psi | 52% | 2375 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,106 psi | 68% | 2585 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 44,411 psi | 68% | 2635 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 44,382 psi | 68% | 2513 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 37,855 psi | 58% | 2425 fps | 97.6% |
| Bofors RP30 | <<locked>> | 82% | 33,852 psi | 52% | 2365 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 40,669 psi | 63% | 2487 fps | 98.4% |
| Bofors RP7 | <<locked>> | 80% | 55,158 psi | 85% | 2631 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 32,372 psi | 50% | 2306 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 54,998 psi | 85% | 2684 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 42,525 psi | 65% | 2480 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,872 psi | 64% | 2467 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,414 psi | 74% | 2520 fps | 100% |
| Hodgdon Retumbo | 69.1 gr | 80% | 33,228 psi | 51% | 2405 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,297 psi | 44% | 1503 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,473 psi | 78% | 2575 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 50,763 psi | 78% | 2579 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,918 psi | 68% | 2474 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 80% | 38,696 psi | 60% | 2461 fps | 96.8% |
| IMR 8133 Enduron | <<locked>> | 90% | 34,563 psi | 53% | 2405 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 53,896 psi | 83% | 2598 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,460 psi | 81% | 2602 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,157 psi | 54% | 2303 fps | 99% |
| Norma 204 | <<locked>> | 80% | 51,053 psi | 79% | 2625 fps | 99.7% |
| Norma 217 | <<locked>> | 84% | 28,413 psi | 44% | 2260 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 42,888 psi | 66% | 2552 fps | 99.6% |
| Norma URP | <<locked>> | 80% | 52,214 psi | 80% | 2618 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,493 psi | 59% | 2470 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 80% | 51,082 psi | 79% | 2625 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,592 psi | 53% | 2359 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,964 psi | 45% | 1535 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,766 psi | 83% | 2657 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 52,112 psi | 80% | 2680 fps | 100% |
| ReloadSwiss RS 76 | 74 gr | 80% | 32,271 psi | 50% | 2379 fps | 97.7% |
| ReloadSwiss RS 80 | 82 gr | 88% | 39,189 psi | 60% | 2520 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 45,745 psi | 70% | 2513 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 80% | 44,208 psi | 68% | 2520 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 80% | 55,158 psi | 85% | 2631 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,896 psi | 83% | 2598 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,460 psi | 81% | 2602 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,808 psi | 81% | 2559 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,859 psi | 67% | 2516 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 46,441 psi | 71% | 2503 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 49,835 psi | 77% | 2575 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,672 psi | 69% | 2500 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 53,519 psi | 82% | 2608 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,885 psi | 60% | 2385 fps | 98.5% |
| Vihtavuori N170 | <<locked>> | 94% | 52,692 psi | 81% | 2654 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 52,779 psi | 81% | 2612 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,947 psi | 68% | 2507 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 42,728 psi | 66% | 2546 fps | 97.4% |
| Vihtavuori N565 | <<locked>> | 80% | 35,418 psi | 54% | 2379 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 88% | 40,611 psi | 62% | 2536 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 94% | 47,630 psi | 73% | 2707 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,808 psi | 81% | 2566 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,869 psi | 57% | 2487 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,988 psi | 63% | 2434 fps | 98.4% |
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 71 powders for .300 PRC loaded with the .308 | 220gr | Woodleigh RN SN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,874 fps; across all powders the maximum-charge window runs from 1,683 fps to 2,874 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 1:14.5 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, ReloadSwiss RS 80 rank at the top here: for .300 PRC with the .308 | 220gr | Woodleigh RN SN they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.