Load Specifications
Load data in caliber .307 Win. with .308 | 123gr | SAKO 129A Gamehead bullet and 38 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% | 52,736 psi | 88% | 2782 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 48,457 psi | 81% | 2795 fps | 98.8% |
| Accurate 2460ᴾ | <<locked>> | 100% | 54,244 psi | 90% | 2900 fps | 97.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,390 psi | 60% | 2638 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 94% | 52,982 psi | 88% | 2782 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 94% | 53,490 psi | 89% | 2789 fps | 96.7% |
| ADI AR 2205 | <<locked>> | 82% | 54,317 psi | 90% | 2694 fps | 100% |
| ADI AR 2207 | <<locked>> | 92% | 52,257 psi | 87% | 2838 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 54,128 psi | 90% | 2927 fps | 98.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 44,860 psi | 75% | 2822 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 98% | 52,214 psi | 87% | 2877 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 92% | 54,375 psi | 90% | 2848 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 51,445 psi | 85% | 2772 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 98% | 52,040 psi | 86% | 2897 fps | 98.1% |
| Hodgdon H335 | <<locked>> | 98% | 53,417 psi | 89% | 2913 fps | 97.4% |
| Hodgdon H4198 | <<locked>> | 90% | 52,040 psi | 86% | 2785 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,560 psi | 52% | 1722 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,467 psi | 71% | 2782 fps | 96.9% |
| IMR 4198 | <<locked>> | 98% | 54,201 psi | 90% | 2864 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 51,837 psi | 86% | 2762 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 51,953 psi | 86% | 2871 fps | 96.1% |
| Lovex S053 | <<locked>> | 88% | 53,374 psi | 89% | 2756 fps | 100% |
| Norma 200 | <<locked>> | 94% | 52,678 psi | 88% | 2864 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,415 psi | 52% | 1765 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 51,851 psi | 86% | 2795 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 51,517 psi | 86% | 2858 fps | 95.9% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 47,558 psi | 79% | 2782 fps | 95.9% |
| Shooters World AR Plus | <<locked>> | 92% | 51,953 psi | 86% | 2871 fps | 96.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 54,273 psi | 90% | 2615 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,227 psi | 85% | 2874 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 53,505 psi | 89% | 2887 fps | 99% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,253 psi | 79% | 2713 fps | 95.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 45,440 psi | 75% | 2710 fps | 96.6% |
| Vihtavuori N110 | <<locked>> | 82% | 52,547 psi | 87% | 2664 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 52,359 psi | 87% | 2792 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 53,156 psi | 88% | 2828 fps | 99.7% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,180 psi | 77% | 2723 fps | 98.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,203 psi | 63% | 2657 fps | 96.9% |
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% | 40,480 psi | 67% | 2569 fps | 98.3% |
| Accurate 2015 | <<locked>> | 88% | 33,301 psi | 55% | 2493 fps | 95.1% |
| Accurate 2460 | <<locked>> | 94% | 44,121 psi | 73% | 2730 fps | 95% |
| Accurate 2495 | <<locked>> | 96% | 31,966 psi | 53% | 2533 fps | 95% |
| Accurate LT-30 | <<locked>> | 84% | 39,204 psi | 65% | 2533 fps | 95.4% |
| Accurate LT-32 | <<locked>> | 90% | 47,601 psi | 79% | 2690 fps | 95.4% |
| ADI AR 2205 | <<locked>> | 80% | 51,213 psi | 85% | 2651 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 36,100 psi | 60% | 2552 fps | 99.8% |
| ADI AR 2219 | 39 gr | 88% | 41,524 psi | 69% | 2703 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 86% | 28,935 psi | 48% | 2448 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,124 psi | 50% | 2425 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,550 psi | 62% | 2546 fps | 98.1% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 37,376 psi | 62% | 2513 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 90% | 39,943 psi | 66% | 2671 fps | 95.2% |
| Hodgdon H335 | 42.1 gr | 92% | 43,439 psi | 72% | 2740 fps | 95% |
| Hodgdon H4198 | <<locked>> | 82% | 40,814 psi | 68% | 2579 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,424 psi | 39% | 1545 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 37,623 psi | 63% | 2677 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 32,300 psi | 54% | 2438 fps | 97% |
| IMR 4227 | <<locked>> | 80% | 43,439 psi | 72% | 2621 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 90% | 48,486 psi | 81% | 2815 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 42,656 psi | 71% | 2589 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,127 psi | 57% | 2513 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,206 psi | 39% | 1578 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,033 psi | 71% | 2651 fps | 99.8% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 48,602 psi | 81% | 2808 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 98% | 44,860 psi | 75% | 2733 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 90% | 48,486 psi | 81% | 2815 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,363 psi | 65% | 2398 fps | 100% |
| SNPE Vectan SP 10 | 41.2 gr | 90% | 44,541 psi | 74% | 2753 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 37,115 psi | 62% | 2582 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 44,411 psi | 74% | 2664 fps | 95.2% |
| Somchem S335 | <<locked>> | 96% | 40,466 psi | 67% | 2615 fps | 95.3% |
| Vihtavuori N110 | <<locked>> | 80% | 49,763 psi | 83% | 2625 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 36,303 psi | 60% | 2523 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 30,821 psi | 51% | 2392 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 90% | 34,272 psi | 57% | 2484 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 96% | 33,794 psi | 56% | 2556 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 38 powders for .307 Win. loaded with the .308 | 123gr | SAKO 129A Gamehead. ADI AR 2219 delivers the highest muzzle velocity at 2,927 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,927 fps. Accurate 2015 gives the best case fill at 100 %, and 38 of the 38 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. 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, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for .307 Win. with the .308 | 123gr | SAKO 129A Gamehead 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.