Load Specifications
Load data in caliber .300 PRC with .308 | 226gr | Lehigh Defense Match Solid bullet and 73 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 56,884 psi | 88% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 58,102 psi | 89% | 2654 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 55,854 psi | 86% | 2740 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 88% | 55,448 psi | 85% | 2674 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 57,232 psi | 88% | 2740 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,027 psi | 85% | 2710 fps | 99.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,255 psi | 76% | 2674 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,738 psi | 86% | 2657 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 58,552 psi | 90% | 2713 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,334 psi | 88% | 2733 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 58,740 psi | 90% | 2690 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 58,508 psi | 90% | 2759 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,463 psi | 85% | 2730 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,576 psi | 79% | 2733 fps | 97.3% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,841 psi | 89% | 2703 fps | 98.4% |
| Bofors RP15 | <<locked>> | 94% | 56,260 psi | 87% | 2717 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 58,131 psi | 89% | 2776 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 57,334 psi | 88% | 2733 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,057 psi | 86% | 2605 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 56,637 psi | 87% | 2733 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 55,941 psi | 86% | 2661 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 58,407 psi | 90% | 2671 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,681 psi | 87% | 2680 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,535 psi | 85% | 2661 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,927 psi | 86% | 2589 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,508 psi | 88% | 2844 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,666 psi | 87% | 2700 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,362 psi | 57% | 1640 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 58,276 psi | 90% | 2651 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,682 psi | 89% | 2628 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 58,465 psi | 90% | 2648 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,334 psi | 88% | 2657 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 92% | 55,303 psi | 85% | 2720 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,773 psi | 69% | 2592 fps | 98.8% |
| Lovex S065 | <<locked>> | 84% | 58,305 psi | 90% | 2621 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,753 psi | 87% | 2625 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 58,320 psi | 90% | 2654 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,492 psi | 85% | 2654 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 45,150 psi | 69% | 2612 fps | 99.9% |
| Norma MRP | <<locked>> | 90% | 57,276 psi | 88% | 2746 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,550 psi | 87% | 2641 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,275 psi | 87% | 2743 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 55,245 psi | 85% | 2651 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 58,653 psi | 90% | 2733 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,377 psi | 59% | 1680 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 58,349 psi | 90% | 2680 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,014 psi | 88% | 2710 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 58,131 psi | 89% | 2838 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,261 psi | 88% | 2805 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 88% | 56,376 psi | 87% | 2644 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 90% | 58,334 psi | 90% | 2707 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 56,057 psi | 86% | 2605 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 58,305 psi | 90% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,753 psi | 87% | 2625 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,522 psi | 88% | 2585 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,928 psi | 89% | 2703 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 57,696 psi | 89% | 2641 fps | 99.6% |
| Somchem S365 | <<locked>> | 86% | 57,551 psi | 89% | 2641 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,450 psi | 90% | 2674 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 58,363 psi | 90% | 2559 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 58,146 psi | 89% | 2628 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 58,305 psi | 90% | 2661 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 56,753 psi | 87% | 2680 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 84% | 57,232 psi | 88% | 2635 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,130 psi | 88% | 2667 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,913 psi | 88% | 2753 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 96% | 56,840 psi | 87% | 2736 fps | 99.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 58,117 psi | 89% | 2805 fps | 99.4% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,911 psi | 84% | 2799 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,522 psi | 88% | 2589 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,173 psi | 86% | 2664 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,928 psi | 89% | 2779 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 58,610 psi | 90% | 2680 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% | 37,869 psi | 58% | 2336 fps | 99.5% |
| Accurate 4350 | <<locked>> | 80% | 50,647 psi | 78% | 2552 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 39,262 psi | 60% | 2448 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 42,380 psi | 65% | 2461 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 80% | 37,811 psi | 58% | 2402 fps | 96.5% |
| ADI AR 2217 | <<locked>> | 86% | 34,185 psi | 53% | 2320 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 82% | 26,977 psi | 42% | 2172 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,791 psi | 75% | 2559 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,235 psi | 65% | 2451 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,203 psi | 59% | 2405 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,854 psi | 57% | 2356 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,749 psi | 49% | 2293 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,872 psi | 63% | 2503 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 44,440 psi | 68% | 2605 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 45,208 psi | 70% | 2493 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 35,404 psi | 54% | 2346 fps | 96.9% |
| Bofors RP30 | <<locked>> | 84% | 33,475 psi | 51% | 2333 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 38,203 psi | 59% | 2405 fps | 97.9% |
| Bofors RP7 | <<locked>> | 80% | 52,649 psi | 81% | 2556 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 32,430 psi | 50% | 2280 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 52,286 psi | 80% | 2608 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 54,882 psi | 84% | 2621 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,321 psi | 62% | 2405 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,639 psi | 61% | 2388 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,876 psi | 71% | 2448 fps | 100% |
| Hodgdon Retumbo | 65.7 gr | 80% | 30,995 psi | 48% | 2313 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 52,460 psi | 81% | 2641 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,992 psi | 43% | 1463 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,153 psi | 74% | 2500 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,244 psi | 83% | 2579 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,051 psi | 74% | 2503 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,800 psi | 64% | 2402 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 80% | 36,376 psi | 56% | 2379 fps | 96.1% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,055 psi | 52% | 2369 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 51,517 psi | 79% | 2526 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,879 psi | 77% | 2526 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,619 psi | 50% | 2224 fps | 98.4% |
| Norma 204 | <<locked>> | 80% | 48,588 psi | 75% | 2546 fps | 99.5% |
| Norma 217 | <<locked>> | 88% | 29,820 psi | 46% | 2280 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 40,176 psi | 62% | 2470 fps | 99.3% |
| Norma URP | <<locked>> | 80% | 49,530 psi | 76% | 2539 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 35,984 psi | 55% | 2385 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 80% | 48,515 psi | 75% | 2549 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,039 psi | 49% | 2274 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,631 psi | 44% | 1496 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,937 psi | 78% | 2579 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,284 psi | 76% | 2602 fps | 100% |
| ReloadSwiss RS 76 | 70.3 gr | 80% | 29,849 psi | 46% | 2287 fps | 96.6% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 38,928 psi | 60% | 2490 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 43,439 psi | 67% | 2434 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 80% | 41,640 psi | 64% | 2441 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 80% | 52,649 psi | 81% | 2556 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,517 psi | 79% | 2526 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,879 psi | 77% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,459 psi | 78% | 2487 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,307 psi | 64% | 2434 fps | 98.7% |
| Somchem S361 | <<locked>> | 80% | 44,106 psi | 68% | 2428 fps | 97.6% |
| Somchem S365 | <<locked>> | 80% | 46,978 psi | 72% | 2500 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,192 psi | 65% | 2425 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 54,781 psi | 84% | 2516 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,966 psi | 78% | 2533 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,550 psi | 56% | 2306 fps | 97.9% |
| Vihtavuori N170 | <<locked>> | 94% | 49,545 psi | 76% | 2569 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 50,314 psi | 77% | 2539 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,162 psi | 63% | 2428 fps | 100% |
| Vihtavuori N560 | 68.2 gr | 80% | 40,190 psi | 62% | 2464 fps | 96.8% |
| Vihtavuori N565 | <<locked>> | 82% | 35,215 psi | 54% | 2346 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 90% | 40,509 psi | 62% | 2507 fps | 95.8% |
| Vihtavuori N570 | <<locked>> | 96% | 47,500 psi | 73% | 2674 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,169 psi | 77% | 2493 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,504 psi | 81% | 2608 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,765 psi | 52% | 2398 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,537 psi | 59% | 2356 fps | 97.9% |
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 | 226gr | Lehigh Defense Match Solid. Hodgdon Retumbo delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,844 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 226.0 gr projectile in 0.308" calls for a 1:9.5 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, Vihtavuori N560 rank at the top here: for .300 PRC with the .308 | 226gr | Lehigh Defense Match Solid they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-50, IMR 7977 Enduron, Lovex D100 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.