Load Specifications
Load data in caliber .307 Win. with .310 | 123gr | Barnes TAC-X 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 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% | 54,273 psi | 90% | 2799 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 46,006 psi | 76% | 2753 fps | 98.4% |
| Accurate 2460ᴾ | <<locked>> | 100% | 51,430 psi | 85% | 2854 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 96% | 54,201 psi | 90% | 2795 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 94% | 51,517 psi | 86% | 2753 fps | 96.1% |
| ADI AR 2205 | <<locked>> | 82% | 52,924 psi | 88% | 2674 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 52,997 psi | 88% | 2848 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 51,561 psi | 86% | 2884 fps | 97.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 42,409 psi | 70% | 2772 fps | 99.6% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 53,040 psi | 88% | 2887 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 92% | 51,924 psi | 86% | 2808 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 52,649 psi | 87% | 2785 fps | 98.5% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 53,229 psi | 88% | 2910 fps | 98.2% |
| Hodgdon H335 | <<locked>> | 98% | 51,024 psi | 85% | 2871 fps | 96.8% |
| Hodgdon H4198 | <<locked>> | 92% | 53,142 psi | 88% | 2799 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,285 psi | 52% | 1716 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 40,364 psi | 67% | 2736 fps | 96.1% |
| IMR 4198 | <<locked>> | 98% | 52,025 psi | 86% | 2828 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 53,185 psi | 88% | 2779 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 53,098 psi | 88% | 2812 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 52,866 psi | 88% | 2884 fps | 96.1% |
| Lovex S053 | <<locked>> | 88% | 51,706 psi | 86% | 2733 fps | 100% |
| Norma 200 | <<locked>> | 96% | 53,461 psi | 89% | 2877 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,748 psi | 51% | 1749 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 53,011 psi | 88% | 2812 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 52,663 psi | 87% | 2871 fps | 95.9% |
| Shooters World AR Plus | <<locked>> | 94% | 52,866 psi | 88% | 2884 fps | 96.1% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 53,098 psi | 88% | 2812 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 52,257 psi | 87% | 2589 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 52,170 psi | 87% | 2884 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 51,227 psi | 85% | 2848 fps | 98.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 43,294 psi | 72% | 2667 fps | 95.9% |
| Vihtavuori N110 | <<locked>> | 84% | 53,592 psi | 89% | 2677 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 53,142 psi | 88% | 2802 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 50,952 psi | 85% | 2792 fps | 99.5% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 44,164 psi | 73% | 2684 fps | 97.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 36,114 psi | 60% | 2612 fps | 96.1% |
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% | 38,725 psi | 64% | 2533 fps | 97.8% |
| Accurate 2015 | <<locked>> | 90% | 33,359 psi | 55% | 2497 fps | 95% |
| Accurate 2460 | <<locked>> | 96% | 44,846 psi | 75% | 2743 fps | 95% |
| Accurate LT-30 | <<locked>> | 86% | 40,001 psi | 66% | 2546 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 92% | 48,501 psi | 81% | 2703 fps | 95.5% |
| ADI AR 2205 | <<locked>> | 80% | 49,792 psi | 83% | 2628 fps | 100% |
| ADI AR 2207 | 31.4 gr | 80% | 34,026 psi | 57% | 2507 fps | 99.5% |
| ADI AR 2219 | 39 gr | 90% | 42,061 psi | 70% | 2710 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 88% | 29,022 psi | 48% | 2451 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 82% | 30,081 psi | 50% | 2428 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,534 psi | 59% | 2503 fps | 97.5% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 38,029 psi | 63% | 2526 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 92% | 40,756 psi | 68% | 2684 fps | 95.3% |
| Hodgdon H335 | <<locked>> | 94% | 44,425 psi | 74% | 2756 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 84% | 41,597 psi | 69% | 2595 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,698 psi | 38% | 1529 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 37,927 psi | 63% | 2680 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 30,603 psi | 51% | 2395 fps | 96.2% |
| IMR 4227 | <<locked>> | 80% | 41,858 psi | 70% | 2592 fps | 99.8% |
| Lovex D060 | <<locked>> | 80% | 49,995 psi | 83% | 2762 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 92% | 49,124 psi | 82% | 2822 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 40,625 psi | 67% | 2552 fps | 100% |
| Norma 200 | <<locked>> | 80% | 31,807 psi | 53% | 2461 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,394 psi | 37% | 1562 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 41,104 psi | 68% | 2612 fps | 99.7% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 49,501 psi | 82% | 2818 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 92% | 49,124 psi | 82% | 2822 fps | 95.3% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 49,995 psi | 83% | 2762 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,985 psi | 63% | 2375 fps | 100% |
| SNPE Vectan SP 10 | 41.3 gr | 92% | 45,513 psi | 76% | 2769 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 37,579 psi | 62% | 2592 fps | 95.5% |
| Somchem S335 | <<locked>> | 98% | 40,741 psi | 68% | 2618 fps | 95.2% |
| Vihtavuori N110 | <<locked>> | 80% | 47,805 psi | 79% | 2598 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,243 psi | 57% | 2480 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 31,169 psi | 52% | 2402 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 92% | 34,722 psi | 58% | 2493 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 98% | 33,866 psi | 56% | 2556 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 37 powders for .307 Win. loaded with the .310 | 123gr | Barnes TAC-X. Hodgdon H322 delivers the highest muzzle velocity at 2,910 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,910 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 51–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.31" calls for a 1:16.0 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, SNPE Vectan SP 10, ADI AR 2207 rank at the top here: for .307 Win. with the .310 | 123gr | Barnes TAC-X 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.