Load Specifications
Load data in caliber .300 PRC with .308 | 220gr | Hornady ELD-X bullet and 72 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 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>> | 92% | 57,551 psi | 89% | 2674 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 58,798 psi | 90% | 2694 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,202 psi | 86% | 2776 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 88% | 55,492 psi | 85% | 2703 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 57,188 psi | 88% | 2769 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,187 psi | 85% | 2743 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,559 psi | 76% | 2707 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,057 psi | 86% | 2697 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,100 psi | 85% | 2697 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,435 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,434 psi | 85% | 2680 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 58,697 psi | 90% | 2792 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,883 psi | 86% | 2766 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,793 psi | 80% | 2762 fps | 97% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 58,160 psi | 89% | 2736 fps | 98.2% |
| Bofors RP15 | <<locked>> | 94% | 56,594 psi | 87% | 2753 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 58,407 psi | 90% | 2808 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 57,435 psi | 88% | 2766 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,550 psi | 87% | 2641 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 56,797 psi | 87% | 2766 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 56,391 psi | 87% | 2697 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 58,523 psi | 90% | 2703 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,942 psi | 88% | 2710 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,796 psi | 86% | 2697 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,144 psi | 86% | 2621 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,638 psi | 89% | 2877 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,724 psi | 87% | 2733 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,550 psi | 58% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 58,334 psi | 90% | 2680 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,783 psi | 89% | 2661 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 58,726 psi | 90% | 2680 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,580 psi | 89% | 2690 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 92% | 55,317 psi | 85% | 2753 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,237 psi | 70% | 2625 fps | 98.6% |
| Lovex S065 | <<locked>> | 82% | 55,172 psi | 85% | 2608 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,043 psi | 88% | 2657 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 55,303 psi | 85% | 2644 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,840 psi | 86% | 2687 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 45,629 psi | 70% | 2648 fps | 99.9% |
| Norma MRP | <<locked>> | 90% | 57,595 psi | 89% | 2785 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,797 psi | 87% | 2674 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,217 psi | 86% | 2772 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 55,637 psi | 86% | 2684 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 58,813 psi | 90% | 2766 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,421 psi | 59% | 1703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 58,595 psi | 90% | 2713 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,043 psi | 88% | 2743 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 58,523 psi | 90% | 2874 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,479 psi | 88% | 2838 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 56,478 psi | 87% | 2677 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 90% | 58,465 psi | 90% | 2740 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 56,550 psi | 87% | 2641 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,172 psi | 85% | 2608 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,043 psi | 88% | 2657 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,754 psi | 89% | 2618 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 58,044 psi | 89% | 2733 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 57,798 psi | 89% | 2671 fps | 99.4% |
| Somchem S365 | <<locked>> | 86% | 57,812 psi | 89% | 2677 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,172 psi | 85% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 58,581 psi | 90% | 2667 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 58,610 psi | 90% | 2697 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 57,116 psi | 88% | 2713 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 84% | 57,682 psi | 89% | 2674 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,464 psi | 88% | 2703 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,217 psi | 88% | 2785 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 96% | 57,261 psi | 88% | 2772 fps | 99.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 58,320 psi | 90% | 2838 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 55,332 psi | 85% | 2835 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,841 psi | 89% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,391 psi | 87% | 2697 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 58,218 psi | 90% | 2815 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 58,682 psi | 90% | 2710 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% | 38,754 psi | 60% | 2375 fps | 99.5% |
| Accurate 4350 | <<locked>> | 80% | 51,416 psi | 79% | 2592 fps | 100% |
| Accurate MAGPRO | 69.8 gr | 80% | 39,697 psi | 61% | 2480 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 42,656 psi | 66% | 2490 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 80% | 38,145 psi | 59% | 2431 fps | 96.3% |
| ADI AR 2217 | <<locked>> | 86% | 34,606 psi | 53% | 2352 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 82% | 27,659 psi | 43% | 2211 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,226 psi | 76% | 2595 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,743 psi | 66% | 2487 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,609 psi | 59% | 2441 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,318 psi | 57% | 2392 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,271 psi | 50% | 2326 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,510 psi | 64% | 2543 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 44,860 psi | 69% | 2641 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 45,353 psi | 70% | 2520 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 36,042 psi | 55% | 2382 fps | 96.9% |
| Bofors RP30 | <<locked>> | 84% | 34,156 psi | 53% | 2372 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 38,609 psi | 59% | 2441 fps | 97.8% |
| Bofors RP7 | <<locked>> | 80% | 53,200 psi | 82% | 2592 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 33,011 psi | 51% | 2316 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 52,765 psi | 81% | 2644 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 55,056 psi | 85% | 2654 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,654 psi | 63% | 2434 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,987 psi | 62% | 2421 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,253 psi | 71% | 2480 fps | 100% |
| Hodgdon Retumbo | 66 gr | 80% | 31,502 psi | 48% | 2349 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 52,808 psi | 81% | 2677 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,094 psi | 43% | 1483 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,428 psi | 75% | 2533 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,389 psi | 84% | 2608 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,501 psi | 75% | 2539 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,119 psi | 65% | 2431 fps | 97% |
| IMR 7828 SSC | <<locked>> | 80% | 36,927 psi | 57% | 2415 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,693 psi | 53% | 2405 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 51,924 psi | 80% | 2562 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,488 psi | 78% | 2562 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,431 psi | 51% | 2260 fps | 98.4% |
| Norma 204 | <<locked>> | 80% | 48,820 psi | 75% | 2579 fps | 99.4% |
| Norma 217 | <<locked>> | 88% | 30,429 psi | 47% | 2316 fps | 96% |
| Norma MRP | <<locked>> | 80% | 40,611 psi | 62% | 2507 fps | 99.2% |
| Norma URP | <<locked>> | 80% | 50,082 psi | 77% | 2579 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,579 psi | 56% | 2421 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 80% | 48,791 psi | 75% | 2582 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,576 psi | 50% | 2310 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,906 psi | 44% | 1522 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,285 psi | 79% | 2615 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,661 psi | 76% | 2638 fps | 100% |
| ReloadSwiss RS 76 | 70.7 gr | 80% | 30,530 psi | 47% | 2326 fps | 96.6% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 39,450 psi | 61% | 2526 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 43,758 psi | 67% | 2467 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 80% | 42,235 psi | 65% | 2477 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 80% | 53,200 psi | 82% | 2592 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,924 psi | 80% | 2562 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,488 psi | 78% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,850 psi | 78% | 2520 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,887 psi | 64% | 2470 fps | 98.6% |
| Somchem S361 | <<locked>> | 80% | 44,628 psi | 69% | 2461 fps | 97.4% |
| Somchem S365 | <<locked>> | 80% | 47,384 psi | 73% | 2536 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,670 psi | 66% | 2457 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 51,488 psi | 79% | 2569 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,173 psi | 57% | 2343 fps | 97.9% |
| Vihtavuori N170 | <<locked>> | 96% | 53,447 psi | 82% | 2657 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 50,691 psi | 78% | 2575 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,800 psi | 64% | 2464 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,567 psi | 62% | 2497 fps | 96.6% |
| Vihtavuori N565 | <<locked>> | 82% | 35,810 psi | 55% | 2382 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 90% | 40,988 psi | 63% | 2543 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 96% | 47,819 psi | 74% | 2707 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,560 psi | 78% | 2530 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,968 psi | 81% | 2648 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,200 psi | 53% | 2434 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,131 psi | 60% | 2392 fps | 97.8% |
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 72 powders for .300 PRC loaded with the .308 | 220gr | Hornady ELD-X. Hodgdon Retumbo delivers the highest muzzle velocity at 2,877 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,877 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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, Accurate MAGPRO rank at the top here: for .300 PRC with the .308 | 220gr | Hornady ELD-X 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.