Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 140gr | Barnes MPG bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Hodgdon H322 and Shooters World AR Plus.
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>> | 84% | 51,721 psi | 86% | 2713 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 52,634 psi | 87% | 2808 fps | 100% |
| Accurate 2460 | <<locked>> | 94% | 51,503 psi | 86% | 2822 fps | 99.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 44,048 psi | 73% | 2746 fps | 99.9% |
| Accurate 2520 | <<locked>> | 98% | 52,069 psi | 87% | 2871 fps | 99% |
| Accurate 4064ᴾ | <<locked>> | 100% | 40,930 psi | 68% | 2710 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 90% | 52,620 psi | 87% | 2733 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 90% | 53,026 psi | 88% | 2746 fps | 99% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 51,895 psi | 86% | 2858 fps | 96.2% |
| ADI AR 2207 | <<locked>> | 88% | 52,866 psi | 88% | 2772 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 50,995 psi | 85% | 2838 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 98% | 51,837 psi | 86% | 2828 fps | 97.5% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 52,518 psi | 87% | 2887 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 52,098 psi | 87% | 2927 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 94% | 53,330 psi | 89% | 2835 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 54,172 psi | 90% | 2782 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 51,082 psi | 85% | 2726 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 96% | 51,909 psi | 86% | 2782 fps | 98% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 52,881 psi | 88% | 2904 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 94% | 52,518 psi | 87% | 2861 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 94% | 53,954 psi | 90% | 2884 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 86% | 51,430 psi | 85% | 2733 fps | 99.6% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 52,127 psi | 87% | 2874 fps | 96.9% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 47,195 psi | 78% | 2831 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,735 psi | 54% | 1693 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 51,082 psi | 85% | 2831 fps | 96.5% |
| IMR 3031ᴾ | <<locked>> | 100% | 49,559 psi | 82% | 2877 fps | 99.9% |
| IMR 4198 | <<locked>> | 92% | 51,677 psi | 86% | 2762 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 51,590 psi | 86% | 2690 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 51,837 psi | 86% | 2828 fps | 97.5% |
| Lovex D073.4 | <<locked>> | 88% | 52,388 psi | 87% | 2841 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 94% | 51,822 psi | 86% | 2825 fps | 98.3% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 49,124 psi | 82% | 2838 fps | 98.6% |
| Lovex S053 | <<locked>> | 84% | 53,272 psi | 89% | 2677 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 53,722 psi | 89% | 2802 fps | 96.5% |
| Lovex S062ᴾ | <<locked>> | 100% | 44,788 psi | 74% | 2730 fps | 96.2% |
| Norma 200 | <<locked>> | 90% | 53,505 psi | 89% | 2815 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 50,430 psi | 84% | 2808 fps | 97.3% |
| Norma 202ᴾ | <<locked>> | 100% | 50,531 psi | 84% | 2831 fps | 99.3% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 54,462 psi | 90% | 2904 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 96% | 54,346 psi | 90% | 2838 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,735 psi | 54% | 1732 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 51,605 psi | 86% | 2726 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 52,243 psi | 87% | 2838 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 98% | 51,532 psi | 86% | 2815 fps | 99.2% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 47,616 psi | 79% | 2753 fps | 96.7% |
| Shooters World AR Plus | <<locked>> | 88% | 52,388 psi | 87% | 2841 fps | 98.8% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 49,124 psi | 82% | 2838 fps | 98.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 44,788 psi | 74% | 2730 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 52,997 psi | 88% | 2799 fps | 97.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,838 psi | 89% | 2526 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 51,474 psi | 86% | 2841 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 51,387 psi | 85% | 2802 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 50,183 psi | 83% | 2825 fps | 95.7% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 54,114 psi | 90% | 2789 fps | 99.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,439 psi | 72% | 2635 fps | 98.9% |
| Somchem S321 | <<locked>> | 96% | 53,258 psi | 88% | 2874 fps | 98% |
| Somchem S335ᴾ | <<locked>> | 100% | 52,156 psi | 87% | 2782 fps | 99.7% |
| Somchem S341ᴾ | <<locked>> | 100% | 53,055 psi | 88% | 2848 fps | 96.1% |
| Vihtavuori N120 | <<locked>> | 88% | 52,895 psi | 88% | 2723 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 53,824 psi | 89% | 2779 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 53,171 psi | 88% | 2782 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 45,208 psi | 75% | 2749 fps | 99.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 47,674 psi | 79% | 2759 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 98% | 52,591 psi | 87% | 2831 fps | 97.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 46,253 psi | 77% | 2753 fps | 98.5% |
| Winchester 748ᴾ | <<locked>> | 100% | 54,027 psi | 90% | 2927 fps | 98.7% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 49,501 psi | 82% | 2831 fps | 96.3% |
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% | 45,498 psi | 76% | 2618 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 30,052 psi | 50% | 2382 fps | 97.2% |
| Accurate 2460 | <<locked>> | 82% | 34,505 psi | 57% | 2507 fps | 95.6% |
| Accurate 2495 | <<locked>> | 82% | 24,265 psi | 40% | 2297 fps | 95.3% |
| Accurate 2520 | <<locked>> | 86% | 34,272 psi | 57% | 2543 fps | 95% |
| Accurate 4064 | <<locked>> | 92% | 31,749 psi | 53% | 2513 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 38,986 psi | 65% | 2500 fps | 98.3% |
| Accurate LT-32 | <<locked>> | 80% | 39,363 psi | 65% | 2503 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 98% | 48,704 psi | 81% | 2805 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 41,379 psi | 69% | 2598 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 36,332 psi | 60% | 2566 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 92% | 43,120 psi | 72% | 2677 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 27,586 psi | 46% | 2398 fps | 98.7% |
| Alliant Power Pro 1200-R | 39.8 gr | 90% | 45,963 psi | 76% | 2818 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,795 psi | 58% | 2507 fps | 99.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 42,467 psi | 71% | 2598 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,970 psi | 61% | 2480 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 40,756 psi | 68% | 2585 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 92% | 40,059 psi | 67% | 2680 fps | 95.5% |
| Hodgdon H322 | 35.3 gr | 80% | 33,243 psi | 55% | 2493 fps | 96.5% |
| Hodgdon H335 | <<locked>> | 80% | 33,649 psi | 56% | 2507 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 42,960 psi | 71% | 2589 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 96% | 45,861 psi | 76% | 2766 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 43,976 psi | 73% | 2772 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,091 psi | 40% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 44,976 psi | 75% | 2723 fps | 95.1% |
| IMR 3031 | <<locked>> | 82% | 28,036 psi | 47% | 2411 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 36,289 psi | 60% | 2497 fps | 99.9% |
| IMR 4227 | <<locked>> | 80% | 48,602 psi | 81% | 2648 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 43,120 psi | 72% | 2677 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 39,465 psi | 66% | 2615 fps | 96.4% |
| Lovex D073.5 | <<locked>> | 86% | 39,262 psi | 65% | 2605 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 90% | 35,012 psi | 58% | 2572 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 47,500 psi | 79% | 2595 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 47,761 psi | 79% | 2707 fps | 95.2% |
| Lovex S062 | <<locked>> | 98% | 41,959 psi | 70% | 2677 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 39,218 psi | 65% | 2582 fps | 100% |
| Norma 201 | <<locked>> | 94% | 41,829 psi | 69% | 2657 fps | 95.3% |
| Norma 202 | <<locked>> | 86% | 32,430 psi | 54% | 2480 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 96% | 47,616 psi | 79% | 2792 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 94% | 50,662 psi | 84% | 2779 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,960 psi | 40% | 1545 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 48,370 psi | 80% | 2680 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 37,869 psi | 63% | 2575 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 84% | 34,258 psi | 57% | 2480 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 96% | 42,119 psi | 70% | 2654 fps | 95.4% |
| Shooters World AR Plus | 37.9 gr | 80% | 39,465 psi | 66% | 2615 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 35,012 psi | 58% | 2572 fps | 95.3% |
| Shooters World Precision | <<locked>> | 98% | 41,959 psi | 70% | 2677 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 43,207 psi | 72% | 2638 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,671 psi | 73% | 2388 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,883 psi | 61% | 2572 fps | 96.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 35,056 psi | 58% | 2503 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 47,108 psi | 78% | 2772 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 33,040 psi | 55% | 2405 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 30,139 psi | 50% | 2352 fps | 95.3% |
| Somchem S321 | <<locked>> | 88% | 40,640 psi | 68% | 2654 fps | 95.3% |
| Somchem S335 | <<locked>> | 82% | 30,371 psi | 50% | 2362 fps | 95.3% |
| Somchem S341 | <<locked>> | 98% | 49,400 psi | 82% | 2792 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 41,437 psi | 69% | 2556 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 33,170 psi | 55% | 2418 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 80% | 28,834 psi | 48% | 2323 fps | 96.6% |
| Vihtavuori N135 | <<locked>> | 82% | 25,701 psi | 43% | 2316 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 88% | 32,764 psi | 54% | 2467 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 92% | 43,149 psi | 72% | 2674 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 90% | 33,388 psi | 55% | 2497 fps | 95.2% |
| Winchester 748 | <<locked>> | 90% | 38,638 psi | 64% | 2648 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 98% | 46,427 psi | 77% | 2779 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 68 powders for .308 Win. Ackley Improved loaded with the .308 | 140gr | Barnes MPG. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,927 fps; across all powders the maximum-charge window runs from 1,693 fps to 2,927 fps. Accurate 2495 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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. Alliant Power Pro 1200-R, Hodgdon H322, Shooters World AR Plus rank at the top here: for .308 Win. Ackley Improved with the .308 | 140gr | Barnes MPG 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.