Load Specifications
Load data in caliber .307 Win. with .308 | 125gr | Barnes X S bullet and 36 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 10, ADI AR 2219 and Hodgdon H335.
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>> | 86% | 51,111 psi | 85% | 2700 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 51,126 psi | 85% | 2779 fps | 99.1% |
| Accurate 2460 | <<locked>> | 98% | 53,113 psi | 88% | 2822 fps | 96.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 39,900 psi | 66% | 2651 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 94% | 54,462 psi | 90% | 2746 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 92% | 51,851 psi | 86% | 2707 fps | 96.2% |
| ADI AR 2207 | <<locked>> | 92% | 54,375 psi | 90% | 2812 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 52,199 psi | 87% | 2841 fps | 98% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 46,818 psi | 78% | 2799 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 96% | 51,735 psi | 86% | 2812 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 90% | 53,185 psi | 88% | 2772 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 52,866 psi | 88% | 2740 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 98% | 53,766 psi | 89% | 2867 fps | 98.2% |
| Hodgdon H335 | <<locked>> | 96% | 51,692 psi | 86% | 2828 fps | 96.8% |
| Hodgdon H4198 | <<locked>> | 90% | 53,316 psi | 89% | 2749 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,590 psi | 54% | 1696 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,744 psi | 74% | 2772 fps | 97.3% |
| IMR 4198 | <<locked>> | 96% | 52,605 psi | 87% | 2785 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 53,795 psi | 89% | 2733 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 54,418 psi | 90% | 2851 fps | 96.4% |
| Lovex S053 | <<locked>> | 86% | 52,446 psi | 87% | 2687 fps | 100% |
| Norma 200 | <<locked>> | 92% | 52,504 psi | 87% | 2802 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,663 psi | 54% | 1739 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 53,534 psi | 89% | 2766 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 53,505 psi | 89% | 2831 fps | 96.1% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 50,879 psi | 85% | 2779 fps | 96.5% |
| Shooters World AR Plus | <<locked>> | 92% | 54,418 psi | 90% | 2851 fps | 96.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 53,330 psi | 89% | 2549 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 52,866 psi | 88% | 2844 fps | 97% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 51,996 psi | 86% | 2808 fps | 98.7% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,400 psi | 82% | 2694 fps | 96.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,688 psi | 79% | 2694 fps | 96.9% |
| Vihtavuori N120 | <<locked>> | 92% | 54,273 psi | 90% | 2762 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 52,199 psi | 87% | 2756 fps | 99.6% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 48,225 psi | 80% | 2703 fps | 98.6% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,683 psi | 68% | 2651 fps | 97.4% |
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% | 42,322 psi | 70% | 2549 fps | 98.5% |
| Accurate 2015 | <<locked>> | 86% | 33,910 psi | 56% | 2444 fps | 95.1% |
| Accurate 2460 | <<locked>> | 94% | 46,905 psi | 78% | 2723 fps | 95.5% |
| Accurate 2495 | <<locked>> | 94% | 33,330 psi | 55% | 2503 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 82% | 38,812 psi | 64% | 2467 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 90% | 48,936 psi | 81% | 2657 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 38,159 psi | 63% | 2536 fps | 99.9% |
| ADI AR 2219 | 36.6 gr | 86% | 40,669 psi | 68% | 2625 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 82% | 27,818 psi | 46% | 2349 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,489 psi | 54% | 2425 fps | 96% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,900 psi | 66% | 2536 fps | 98.5% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 39,131 psi | 65% | 2497 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 90% | 42,148 psi | 70% | 2657 fps | 95.7% |
| Hodgdon H335 | 40.5 gr | 92% | 45,353 psi | 75% | 2720 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 82% | 42,554 psi | 71% | 2556 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,207 psi | 40% | 1516 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 37,550 psi | 62% | 2615 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 34,113 psi | 57% | 2425 fps | 97.5% |
| IMR 4227 | <<locked>> | 80% | 45,121 psi | 75% | 2595 fps | 100% |
| Lovex D073.4 | <<locked>> | 90% | 50,836 psi | 84% | 2795 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 44,672 psi | 74% | 2566 fps | 100% |
| Norma 200 | <<locked>> | 80% | 37,246 psi | 62% | 2516 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,134 psi | 40% | 1552 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,991 psi | 75% | 2628 fps | 99.9% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 50,517 psi | 84% | 2785 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 96% | 45,527 psi | 76% | 2680 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 90% | 50,836 psi | 84% | 2795 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,524 psi | 69% | 2375 fps | 100% |
| SNPE Vectan SP 10 | 39.7 gr | 90% | 46,833 psi | 78% | 2740 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 36,941 psi | 61% | 2520 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 46,586 psi | 77% | 2648 fps | 95.6% |
| Somchem S335 | <<locked>> | 94% | 40,292 psi | 67% | 2552 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 38,319 psi | 64% | 2503 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,488 psi | 52% | 2346 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 88% | 34,345 psi | 57% | 2428 fps | 95% |
| Vihtavuori N135 | <<locked>> | 94% | 34,330 psi | 57% | 2510 fps | 95.4% |
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 36 powders for .307 Win. loaded with the .308 | 125gr | Barnes X S. Hodgdon H322 delivers the highest muzzle velocity at 2,867 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,867 fps. Accurate 2015 gives the best case fill at 100 %, and 36 of the 36 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Alliant AR-Comp 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. SNPE Vectan SP 10, ADI AR 2219, Hodgdon H335 rank at the top here: for .307 Win. with the .308 | 125gr | Barnes X S 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.