Load Specifications
Load data in caliber .307 Win. with .308 | 120gr | Frontier BTSP bullet and 32 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 ADI AR 2207.
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>> | 90% | 53,476 psi | 89% | 2805 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 45,339 psi | 75% | 2756 fps | 97.9% |
| Accurate 2460ᴾ | <<locked>> | 100% | 50,459 psi | 84% | 2851 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 96% | 53,635 psi | 89% | 2802 fps | 98% |
| Accurate LT-32 | <<locked>> | 96% | 54,273 psi | 90% | 2808 fps | 96.2% |
| ADI AR 2205 | <<locked>> | 82% | 52,272 psi | 87% | 2684 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 52,373 psi | 87% | 2861 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 54,433 psi | 90% | 2946 fps | 97.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 41,814 psi | 69% | 2779 fps | 99.3% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 52,562 psi | 87% | 2900 fps | 99.6% |
| Alliant Reloder-7 | <<locked>> | 94% | 54,331 psi | 90% | 2861 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 51,547 psi | 86% | 2785 fps | 97.9% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 51,924 psi | 86% | 2907 fps | 97.5% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 53,548 psi | 89% | 2927 fps | 96.8% |
| Hodgdon H4198 | <<locked>> | 92% | 52,562 psi | 87% | 2802 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,227 psi | 52% | 1726 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 54,201 psi | 90% | 2881 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 52,866 psi | 88% | 2792 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 52,344 psi | 87% | 2818 fps | 99.8% |
| Lovex S053 | <<locked>> | 90% | 53,824 psi | 89% | 2782 fps | 100% |
| Norma 200 | <<locked>> | 96% | 52,823 psi | 88% | 2887 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,067 psi | 52% | 1765 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 51,982 psi | 86% | 2815 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 52,344 psi | 87% | 2818 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 82% | 53,490 psi | 89% | 2795 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 54,331 psi | 90% | 2638 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 51,053 psi | 85% | 2884 fps | 96.2% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 53,476 psi | 89% | 2900 fps | 98.6% |
| Vihtavuori N110 | <<locked>> | 84% | 53,171 psi | 88% | 2694 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 52,475 psi | 87% | 2815 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 50,154 psi | 83% | 2795 fps | 99.2% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,453 psi | 72% | 2687 fps | 97.3% |
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% | 38,479 psi | 64% | 2543 fps | 97.3% |
| Accurate 2015 | <<locked>> | 92% | 35,215 psi | 59% | 2552 fps | 95.1% |
| Accurate 2460 | <<locked>> | 98% | 47,311 psi | 79% | 2802 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 88% | 42,076 psi | 70% | 2602 fps | 95.6% |
| Accurate LT-32 | <<locked>> | 94% | 51,024 psi | 85% | 2759 fps | 95.5% |
| ADI AR 2205 | <<locked>> | 80% | 49,182 psi | 82% | 2638 fps | 100% |
| ADI AR 2207 | 30.9 gr | 80% | 33,939 psi | 56% | 2523 fps | 99.2% |
| ADI AR 2219 | 38.4 gr | 90% | 41,742 psi | 69% | 2720 fps | 95% |
| Alliant AR-Comp | <<locked>> | 90% | 30,589 psi | 51% | 2507 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 31,923 psi | 53% | 2490 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,592 psi | 59% | 2520 fps | 97.1% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 40,089 psi | 67% | 2582 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 94% | 43,062 psi | 72% | 2743 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 96% | 46,601 psi | 77% | 2808 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 86% | 43,743 psi | 73% | 2651 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,887 psi | 38% | 1539 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 30,560 psi | 51% | 2405 fps | 95.7% |
| IMR 4227 | <<locked>> | 80% | 41,249 psi | 69% | 2595 fps | 99.6% |
| Lovex D060 | <<locked>> | 80% | 49,617 psi | 82% | 2772 fps | 99.7% |
| Lovex S053 | <<locked>> | 80% | 40,422 psi | 67% | 2566 fps | 100% |
| Norma 200 | 32.3 gr | 80% | 31,850 psi | 53% | 2474 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,640 psi | 38% | 1575 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,625 psi | 67% | 2618 fps | 99.4% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 49,617 psi | 82% | 2772 fps | 99.7% |
| Shooters World SOCOM | <<locked>> | 80% | 50,328 psi | 84% | 2746 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,753 psi | 63% | 2388 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 48,051 psi | 80% | 2831 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 39,349 psi | 65% | 2644 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 47,442 psi | 79% | 2615 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,156 psi | 57% | 2497 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 33,011 psi | 55% | 2461 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 94% | 36,448 psi | 61% | 2543 fps | 95.3% |
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 32 powders for .307 Win. loaded with the .308 | 120gr | Frontier BTSP. ADI AR 2219 delivers the highest muzzle velocity at 2,946 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,946 fps. Accurate 2015 gives the best case fill at 100 %, and 32 of the 32 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 120.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, 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, Norma 200, ADI AR 2207 rank at the top here: for .307 Win. with the .308 | 120gr | Frontier BTSP 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.