Load Specifications
Load data in caliber .308 Win. with .310 | 123gr | Barnes TAC-X bullet and 46 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 ReloadSwiss RS 40.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 88% | 52,939 psi | 88% | 2907 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 48,762 psi | 81% | 2930 fps | 99.6% |
| Accurate 2460 | <<locked>> | 98% | 51,053 psi | 85% | 2986 fps | 98.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,564 psi | 61% | 2779 fps | 98.2% |
| Accurate 2520ᴾ | <<locked>> | 100% | 47,601 psi | 79% | 2969 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 94% | 53,345 psi | 89% | 2910 fps | 99.3% |
| Accurate LT-32 | <<locked>> | 94% | 53,838 psi | 89% | 2920 fps | 98% |
| ADI AR 2207 | <<locked>> | 92% | 52,431 psi | 87% | 2959 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 51,053 psi | 85% | 3012 fps | 99% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,310 psi | 75% | 2963 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 52,881 psi | 88% | 3015 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 51,213 psi | 85% | 2923 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 51,721 psi | 86% | 2900 fps | 99.3% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 52,185 psi | 87% | 2949 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 98% | 52,591 psi | 87% | 3038 fps | 99.2% |
| Hodgdon H335 | <<locked>> | 98% | 54,070 psi | 90% | 3061 fps | 98.7% |
| Hodgdon H4198 | <<locked>> | 90% | 52,199 psi | 87% | 2913 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,517 psi | 52% | 1791 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,757 psi | 71% | 2930 fps | 98.5% |
| IMR 4198 | <<locked>> | 96% | 51,735 psi | 86% | 2949 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 52,344 psi | 87% | 2884 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 52,301 psi | 87% | 3012 fps | 97.7% |
| Lovex D073.5 | <<locked>> | 98% | 51,416 psi | 85% | 2986 fps | 96.9% |
| Lovex S053 | <<locked>> | 88% | 53,751 psi | 89% | 2874 fps | 100% |
| Norma 200 | <<locked>> | 94% | 53,069 psi | 88% | 2999 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 43,729 psi | 73% | 2884 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,299 psi | 52% | 1834 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 52,069 psi | 87% | 2920 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 52,286 psi | 87% | 3005 fps | 97.5% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 47,572 psi | 79% | 2923 fps | 97.5% |
| Shooters World AR Plus | <<locked>> | 92% | 52,301 psi | 87% | 3012 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 53,708 psi | 89% | 2969 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 54,462 psi | 90% | 2717 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,503 psi | 86% | 3015 fps | 98.3% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 54,331 psi | 90% | 3028 fps | 99.7% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,674 psi | 79% | 2851 fps | 97.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,014 psi | 63% | 2684 fps | 96.3% |
| Somchem S321ᴾ | <<locked>> | 100% | 53,214 psi | 88% | 3038 fps | 96.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 45,963 psi | 76% | 2848 fps | 98.1% |
| Vihtavuori N110 | <<locked>> | 82% | 52,910 psi | 88% | 2776 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 52,533 psi | 87% | 2907 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 53,737 psi | 89% | 2959 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,731 psi | 78% | 2858 fps | 99.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,508 psi | 64% | 2799 fps | 98.5% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,669 psi | 69% | 2815 fps | 96.7% |
| Winchester 748ᴾ | <<locked>> | 100% | 47,036 psi | 78% | 2969 fps | 95.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 40,480 psi | 67% | 2694 fps | 99.2% |
| Accurate 2015 | <<locked>> | 84% | 29,051 psi | 48% | 2513 fps | 95.2% |
| Accurate 2460 | <<locked>> | 90% | 38,580 psi | 64% | 2756 fps | 95.2% |
| Accurate 2495 | <<locked>> | 92% | 27,470 psi | 46% | 2552 fps | 95.1% |
| Accurate 2520 | <<locked>> | 96% | 41,379 psi | 69% | 2854 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 34,751 psi | 58% | 2559 fps | 95.6% |
| Accurate LT-32 | <<locked>> | 86% | 42,177 psi | 70% | 2713 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 36,071 psi | 60% | 2674 fps | 100% |
| ADI AR 2219 | 37.5 gr | 82% | 34,113 psi | 57% | 2667 fps | 95% |
| Alliant AR-Comp | <<locked>> | 82% | 25,295 psi | 42% | 2470 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 80% | 29,878 psi | 50% | 2549 fps | 96.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,318 psi | 62% | 2671 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 32,837 psi | 55% | 2536 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 96% | 46,035 psi | 76% | 2841 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 86% | 35,360 psi | 59% | 2700 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 88% | 38,319 psi | 64% | 2769 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 38,406 psi | 64% | 2654 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,003 psi | 38% | 1601 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 33,112 psi | 55% | 2707 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 32,082 psi | 53% | 2559 fps | 98.3% |
| IMR 4227 | <<locked>> | 80% | 43,656 psi | 73% | 2743 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 42,134 psi | 70% | 2831 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 94% | 44,469 psi | 74% | 2867 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 42,467 psi | 71% | 2697 fps | 100% |
| Norma 200 | <<locked>> | 80% | 33,634 psi | 56% | 2635 fps | 98.6% |
| Norma 202 | <<locked>> | 96% | 38,464 psi | 64% | 2779 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,974 psi | 38% | 1640 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,018 psi | 71% | 2772 fps | 100% |
| ReloadSwiss RS 40 | 41.5 gr | 92% | 42,888 psi | 71% | 2838 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 94% | 39,653 psi | 66% | 2766 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 86% | 42,134 psi | 70% | 2831 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 50,169 psi | 83% | 2913 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,392 psi | 65% | 2497 fps | 100% |
| SNPE Vectan SP 10 | 40.6 gr | 86% | 39,117 psi | 65% | 2782 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 32,677 psi | 54% | 2605 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 39,407 psi | 65% | 2697 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 35,781 psi | 59% | 2635 fps | 95.6% |
| Somchem S321 | <<locked>> | 96% | 46,253 psi | 77% | 2923 fps | 95% |
| Somchem S335 | <<locked>> | 92% | 35,650 psi | 59% | 2644 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 49,705 psi | 83% | 2730 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 36,274 psi | 60% | 2638 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,008 psi | 48% | 2467 fps | 96.2% |
| Vihtavuori N133 | <<locked>> | 86% | 30,371 psi | 50% | 2513 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 92% | 29,921 psi | 50% | 2589 fps | 95.8% |
| Vihtavuori N140 | <<locked>> | 96% | 36,550 psi | 61% | 2703 fps | 95.2% |
| Winchester 748 | <<locked>> | 98% | 44,106 psi | 73% | 2913 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 46 powders for .308 Win. loaded with the .310 | 123gr | Barnes TAC-X. Hodgdon H335 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,061 fps. Accurate 2015 gives the best case fill at 100 %, and 46 of the 46 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 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 2495, Accurate 2520 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, ReloadSwiss RS 40 rank at the top here: for .308 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.