Load Specifications
Load data in caliber .307 Win. with .311 | 125gr | Speer Spitzer Soft Point 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, SNPE Vectan SP 10 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>> | 88% | 53,359 psi | 89% | 2769 fps | 99.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 49,559 psi | 82% | 2792 fps | 99.1% |
| Accurate 2460 | <<locked>> | 98% | 51,779 psi | 86% | 2844 fps | 97% |
| Accurate 2495ᴾ | <<locked>> | 100% | 37,478 psi | 62% | 2641 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 94% | 53,592 psi | 89% | 2772 fps | 98.6% |
| Accurate LT-32 | <<locked>> | 94% | 54,099 psi | 90% | 2779 fps | 97% |
| ADI AR 2207 | <<locked>> | 92% | 53,011 psi | 88% | 2828 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 51,590 psi | 86% | 2867 fps | 98.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,527 psi | 76% | 2815 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 98% | 53,461 psi | 89% | 2874 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 90% | 51,996 psi | 86% | 2792 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 52,011 psi | 86% | 2762 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 98% | 52,808 psi | 88% | 2887 fps | 98.4% |
| Hodgdon H335 | <<locked>> | 98% | 54,172 psi | 90% | 2907 fps | 97.7% |
| Hodgdon H4198 | <<locked>> | 90% | 52,707 psi | 88% | 2779 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,836 psi | 53% | 1716 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,424 psi | 72% | 2785 fps | 97.4% |
| IMR 4198 | <<locked>> | 96% | 51,779 psi | 86% | 2808 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 52,881 psi | 88% | 2756 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 52,808 psi | 88% | 2867 fps | 96.5% |
| Lovex S053 | <<locked>> | 88% | 54,447 psi | 90% | 2749 fps | 100% |
| Norma 200 | <<locked>> | 94% | 53,867 psi | 89% | 2861 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,734 psi | 53% | 1755 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 52,489 psi | 87% | 2785 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 52,605 psi | 87% | 2858 fps | 96.3% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 48,617 psi | 81% | 2782 fps | 96.4% |
| Shooters World AR Plus | <<locked>> | 92% | 52,808 psi | 88% | 2867 fps | 96.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 52,214 psi | 87% | 2569 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,924 psi | 86% | 2864 fps | 97.2% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 51,488 psi | 86% | 2838 fps | 98.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 48,283 psi | 80% | 2713 fps | 96.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 46,383 psi | 77% | 2710 fps | 97.1% |
| Vihtavuori N110 | <<locked>> | 82% | 53,229 psi | 88% | 2654 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 53,098 psi | 88% | 2782 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 54,331 psi | 90% | 2822 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 47,210 psi | 78% | 2723 fps | 98.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,131 psi | 65% | 2661 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% | 41,017 psi | 68% | 2562 fps | 98.5% |
| Accurate 2015 | <<locked>> | 88% | 33,910 psi | 56% | 2490 fps | 95.6% |
| Accurate 2460 | <<locked>> | 94% | 45,165 psi | 75% | 2733 fps | 95.5% |
| Accurate 2495 | <<locked>> | 96% | 32,663 psi | 54% | 2533 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 82% | 37,434 psi | 62% | 2480 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 88% | 45,469 psi | 76% | 2635 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 36,680 psi | 61% | 2546 fps | 99.9% |
| ADI AR 2219 | 38.2 gr | 86% | 39,334 psi | 65% | 2641 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 84% | 27,702 psi | 46% | 2395 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,632 psi | 51% | 2421 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,116 psi | 63% | 2543 fps | 98.4% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 37,826 psi | 63% | 2507 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 90% | 40,901 psi | 68% | 2671 fps | 95.8% |
| Hodgdon H335 | 42.3 gr | 92% | 44,382 psi | 74% | 2740 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 82% | 41,321 psi | 69% | 2572 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,438 psi | 39% | 1532 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 35,998 psi | 60% | 2621 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 32,750 psi | 54% | 2431 fps | 97.4% |
| IMR 4227 | <<locked>> | 80% | 44,034 psi | 73% | 2615 fps | 100% |
| Lovex D073.4 | <<locked>> | 90% | 49,211 psi | 82% | 2808 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 43,250 psi | 72% | 2579 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,664 psi | 58% | 2507 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,192 psi | 39% | 1565 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,642 psi | 73% | 2641 fps | 99.9% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 49,255 psi | 82% | 2799 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 96% | 42,946 psi | 71% | 2677 fps | 95% |
| Shooters World AR Plus | <<locked>> | 90% | 49,211 psi | 82% | 2808 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,856 psi | 66% | 2385 fps | 100% |
| SNPE Vectan SP 10 | 40.5 gr | 88% | 42,641 psi | 71% | 2700 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 35,418 psi | 59% | 2526 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 42,699 psi | 71% | 2618 fps | 95% |
| Somchem S335 | <<locked>> | 94% | 38,696 psi | 64% | 2562 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 50,415 psi | 84% | 2615 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 36,869 psi | 61% | 2513 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 31,560 psi | 52% | 2392 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 90% | 34,809 psi | 58% | 2477 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 94% | 32,358 psi | 54% | 2503 fps | 95% |
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 .311 | 125gr | Speer Spitzer Soft Point. Hodgdon H335 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 53–90 %, leaving at least 10 % headroom. 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. ADI AR 2219, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for .307 Win. with the .311 | 125gr | Speer Spitzer Soft Point 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.