Load Specifications
Load data in caliber .307 Win. with .31 | 123gr | Prvi Partizan FMJ bullet and 37 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, Norma 200 and Hodgdon H322.
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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 88% | 51,880 psi | 86% | 2759 fps | 99.7% |
| Accurate 2015ᴾ | <<locked>> | 100% | 47,558 psi | 79% | 2772 fps | 98.6% |
| Accurate 2460ᴾ | <<locked>> | 100% | 53,447 psi | 89% | 2881 fps | 97% |
| Accurate 2495ᴾ | <<locked>> | 100% | 35,897 psi | 60% | 2621 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 94% | 52,475 psi | 87% | 2766 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 94% | 52,982 psi | 88% | 2772 fps | 96.5% |
| ADI AR 2205 | <<locked>> | 82% | 54,056 psi | 90% | 2684 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 54,462 psi | 90% | 2864 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 53,272 psi | 89% | 2907 fps | 98.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 44,077 psi | 73% | 2802 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 98% | 51,692 psi | 86% | 2861 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 92% | 53,359 psi | 89% | 2825 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 54,128 psi | 90% | 2805 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 98% | 51,184 psi | 85% | 2874 fps | 97.8% |
| Hodgdon H335 | <<locked>> | 98% | 52,678 psi | 88% | 2894 fps | 97.1% |
| Hodgdon H4198 | <<locked>> | 90% | 51,111 psi | 85% | 2762 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,473 psi | 52% | 1716 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,003 psi | 70% | 2766 fps | 96.7% |
| IMR 4198 | <<locked>> | 98% | 53,635 psi | 89% | 2848 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 54,389 psi | 90% | 2792 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 54,186 psi | 90% | 2825 fps | 100% |
| Lovex S053 | <<locked>> | 88% | 53,026 psi | 88% | 2746 fps | 100% |
| Norma 200 | <<locked>> | 94% | 52,040 psi | 86% | 2851 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,328 psi | 52% | 1755 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 54,302 psi | 90% | 2828 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 54,375 psi | 90% | 2894 fps | 96.3% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 47,036 psi | 78% | 2769 fps | 95.7% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 54,186 psi | 90% | 2825 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 53,490 psi | 89% | 2602 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 53,896 psi | 90% | 2907 fps | 97.3% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 52,968 psi | 88% | 2871 fps | 98.8% |
| Somchem S335ᴾ | <<locked>> | 100% | 44,976 psi | 75% | 2697 fps | 96.4% |
| Vihtavuori N110 | <<locked>> | 82% | 52,098 psi | 87% | 2654 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 51,721 psi | 86% | 2779 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 52,692 psi | 88% | 2812 fps | 99.7% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 45,730 psi | 76% | 2710 fps | 98.2% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 37,753 psi | 63% | 2641 fps | 96.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 39,972 psi | 66% | 2552 fps | 98.1% |
| Accurate 2015 | <<locked>> | 90% | 34,867 psi | 58% | 2523 fps | 95.5% |
| Accurate 2460 | <<locked>> | 96% | 46,441 psi | 77% | 2766 fps | 95.5% |
| Accurate 2495 | <<locked>> | 98% | 33,344 psi | 55% | 2562 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 84% | 38,711 psi | 64% | 2516 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 90% | 46,760 psi | 78% | 2667 fps | 95% |
| ADI AR 2205 | <<locked>> | 80% | 50,923 psi | 85% | 2641 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 35,447 psi | 59% | 2533 fps | 99.7% |
| ADI AR 2219 | 38.4 gr | 88% | 40,698 psi | 68% | 2677 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 86% | 28,514 psi | 47% | 2428 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 82% | 31,459 psi | 52% | 2454 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,912 psi | 61% | 2526 fps | 97.9% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 39,117 psi | 65% | 2546 fps | 95.6% |
| Hodgdon H322 | 38.9 gr | 92% | 42,322 psi | 70% | 2713 fps | 95.8% |
| Hodgdon H335 | <<locked>> | 94% | 46,006 psi | 76% | 2782 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 84% | 42,699 psi | 71% | 2612 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,250 psi | 39% | 1535 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 39,218 psi | 65% | 2707 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 31,720 psi | 53% | 2418 fps | 96.7% |
| IMR 4227 | <<locked>> | 80% | 43,047 psi | 72% | 2608 fps | 99.9% |
| Lovex D060 | <<locked>> | 80% | 51,053 psi | 85% | 2776 fps | 99.9% |
| Lovex S053 | <<locked>> | 80% | 41,916 psi | 70% | 2569 fps | 100% |
| Norma 200 | 33.1 gr | 80% | 33,489 psi | 56% | 2493 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,003 psi | 38% | 1568 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 42,351 psi | 70% | 2631 fps | 99.8% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 50,778 psi | 84% | 2838 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 98% | 44,367 psi | 74% | 2717 fps | 95% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 51,053 psi | 85% | 2776 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,204 psi | 65% | 2388 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 44,092 psi | 73% | 2740 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 36,535 psi | 61% | 2566 fps | 95.1% |
| Somchem S335 | <<locked>> | 98% | 42,105 psi | 70% | 2641 fps | 95.6% |
| Vihtavuori N110 | <<locked>> | 80% | 49,240 psi | 82% | 2612 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 35,578 psi | 59% | 2503 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 32,489 psi | 54% | 2428 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 92% | 35,897 psi | 60% | 2516 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 96% | 33,402 psi | 55% | 2539 fps | 95.1% |
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 37 powders for .307 Win. loaded with the .31 | 123gr | Prvi Partizan FMJ. ADI AR 2219 delivers the highest muzzle velocity at 2,907 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,907 fps. Accurate 2015 gives the best case fill at 100 %, and 37 of the 37 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.31" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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. ADI AR 2219, Norma 200, Hodgdon H322 rank at the top here: for .307 Win. with the .31 | 123gr | Prvi Partizan FMJ 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.