Load Specifications
Load data in caliber .307 Win. with .308 | 123gr | Sako Gamehead 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% | 52,808 psi | 88% | 2785 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 48,892 psi | 81% | 2805 fps | 98.9% |
| Accurate 2460 | <<locked>> | 98% | 51,068 psi | 85% | 2851 fps | 96.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,796 psi | 61% | 2648 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 94% | 53,432 psi | 89% | 2792 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 94% | 53,940 psi | 90% | 2799 fps | 96.8% |
| ADI AR 2207 | <<locked>> | 92% | 52,489 psi | 87% | 2844 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 50,995 psi | 85% | 2881 fps | 98% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,353 psi | 75% | 2835 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 98% | 52,765 psi | 88% | 2890 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 90% | 51,416 psi | 85% | 2805 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 51,837 psi | 86% | 2779 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 98% | 52,141 psi | 87% | 2900 fps | 98.1% |
| Hodgdon H335 | <<locked>> | 98% | 53,838 psi | 89% | 2923 fps | 97.5% |
| Hodgdon H4198 | <<locked>> | 90% | 52,185 psi | 87% | 2792 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,618 psi | 53% | 1726 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,844 psi | 71% | 2792 fps | 97.1% |
| IMR 4198 | <<locked>> | 98% | 54,317 psi | 90% | 2867 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 52,417 psi | 87% | 2772 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 52,489 psi | 87% | 2884 fps | 96.3% |
| Lovex S053 | <<locked>> | 88% | 53,969 psi | 90% | 2766 fps | 100% |
| Norma 200 | <<locked>> | 94% | 53,156 psi | 88% | 2874 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,488 psi | 52% | 1768 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 52,040 psi | 86% | 2802 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 51,982 psi | 86% | 2867 fps | 96% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 48,037 psi | 80% | 2795 fps | 96.1% |
| Shooters World AR Plus | <<locked>> | 92% | 52,489 psi | 87% | 2884 fps | 96.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 54,462 psi | 90% | 2621 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,285 psi | 85% | 2877 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 54,056 psi | 90% | 2900 fps | 99.1% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,718 psi | 79% | 2726 fps | 96.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 45,803 psi | 76% | 2720 fps | 96.8% |
| Vihtavuori N110 | <<locked>> | 82% | 52,837 psi | 88% | 2671 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 52,504 psi | 87% | 2799 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 53,664 psi | 89% | 2835 fps | 99.8% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,673 psi | 78% | 2736 fps | 98.5% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,624 psi | 64% | 2671 fps | 97.1% |
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% | 40,596 psi | 67% | 2575 fps | 98.3% |
| Accurate 2015 | <<locked>> | 88% | 33,460 psi | 56% | 2497 fps | 95.2% |
| Accurate 2460 | <<locked>> | 94% | 44,556 psi | 74% | 2740 fps | 95.2% |
| Accurate 2495 | <<locked>> | 96% | 32,097 psi | 53% | 2539 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 84% | 39,349 psi | 65% | 2539 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 90% | 47,688 psi | 79% | 2697 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 36,303 psi | 60% | 2559 fps | 99.8% |
| ADI AR 2219 | 39.2 gr | 88% | 41,582 psi | 69% | 2707 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 84% | 27,383 psi | 45% | 2398 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,284 psi | 50% | 2434 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,739 psi | 63% | 2552 fps | 98.2% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 37,478 psi | 62% | 2520 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 90% | 40,393 psi | 67% | 2680 fps | 95.4% |
| Hodgdon H335 | 42.4 gr | 92% | 43,772 psi | 73% | 2749 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 82% | 40,973 psi | 68% | 2585 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,250 psi | 39% | 1542 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 37,739 psi | 63% | 2680 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 32,474 psi | 54% | 2444 fps | 97.1% |
| IMR 4227 | <<locked>> | 80% | 43,671 psi | 73% | 2628 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 90% | 48,588 psi | 81% | 2818 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 42,873 psi | 71% | 2595 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,301 psi | 57% | 2520 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,308 psi | 39% | 1581 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,221 psi | 72% | 2654 fps | 99.9% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 48,588 psi | 81% | 2812 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 98% | 45,266 psi | 75% | 2746 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 90% | 48,588 psi | 81% | 2818 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,595 psi | 66% | 2405 fps | 100% |
| SNPE Vectan SP 10 | 41.5 gr | 90% | 45,005 psi | 75% | 2766 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 37,231 psi | 62% | 2589 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 44,846 psi | 75% | 2674 fps | 95.4% |
| Somchem S335 | <<locked>> | 96% | 40,553 psi | 67% | 2621 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 50,024 psi | 83% | 2631 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 36,492 psi | 61% | 2530 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 31,227 psi | 52% | 2402 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 90% | 34,403 psi | 57% | 2487 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 96% | 34,214 psi | 57% | 2569 fps | 95.6% |
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 .308 | 123gr | Sako Gamehead. Hodgdon H335 delivers the highest muzzle velocity at 2,923 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,923 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. 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 .308 | 123gr | Sako 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.