Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 136gr | Geco ZERO bullet and 69 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, SNPE Vectan SP 10 and ADI AR 2219.
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% | 52,460 psi | 87% | 2799 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 53,287 psi | 89% | 2890 fps | 100% |
| Accurate 2230 | <<locked>> | 88% | 52,605 psi | 87% | 2933 fps | 96% |
| Accurate 2460 | <<locked>> | 94% | 52,330 psi | 87% | 2907 fps | 99.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 44,686 psi | 74% | 2825 fps | 100% |
| Accurate 2520 | <<locked>> | 98% | 52,779 psi | 88% | 2953 fps | 99.2% |
| Accurate 4064ᴾ | <<locked>> | 100% | 41,510 psi | 69% | 2792 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 90% | 53,142 psi | 88% | 2815 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 90% | 53,621 psi | 89% | 2828 fps | 99.2% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 52,765 psi | 88% | 2946 fps | 96.6% |
| ADI AR 2207 | <<locked>> | 88% | 53,388 psi | 89% | 2854 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 51,895 psi | 86% | 2923 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 98% | 52,547 psi | 87% | 2913 fps | 97.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 53,577 psi | 89% | 2976 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 53,359 psi | 89% | 3025 fps | 97.5% |
| Alliant Reloder-10x | <<locked>> | 94% | 54,041 psi | 90% | 2920 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 51,488 psi | 86% | 2818 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 51,837 psi | 86% | 2808 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 96% | 52,446 psi | 87% | 2867 fps | 98.3% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 53,766 psi | 89% | 2992 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 94% | 53,374 psi | 89% | 2946 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 92% | 51,242 psi | 85% | 2920 fps | 99.4% |
| Hodgdon H4198 | <<locked>> | 86% | 51,909 psi | 86% | 2815 fps | 99.7% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 53,113 psi | 88% | 2963 fps | 97.3% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 48,022 psi | 80% | 2920 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,576 psi | 54% | 1745 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 51,692 psi | 86% | 2913 fps | 96.9% |
| IMR 3031ᴾ | <<locked>> | 100% | 50,531 psi | 84% | 2966 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 52,315 psi | 87% | 2844 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 52,040 psi | 86% | 2769 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 52,547 psi | 87% | 2913 fps | 97.8% |
| Lovex D073.4 | <<locked>> | 88% | 52,895 psi | 88% | 2927 fps | 99% |
| Lovex D073.5 | <<locked>> | 94% | 52,460 psi | 87% | 2910 fps | 98.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 50,154 psi | 83% | 2923 fps | 98.9% |
| Lovex S053 | <<locked>> | 84% | 53,635 psi | 89% | 2756 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 54,404 psi | 90% | 2890 fps | 96.8% |
| Lovex S062ᴾ | <<locked>> | 100% | 45,310 psi | 75% | 2808 fps | 96.5% |
| Norma 200 | <<locked>> | 90% | 54,012 psi | 90% | 2897 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 51,285 psi | 85% | 2897 fps | 97.7% |
| Norma 202ᴾ | <<locked>> | 100% | 51,227 psi | 85% | 2917 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 98% | 52,040 psi | 86% | 2940 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 94% | 51,459 psi | 85% | 2864 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,474 psi | 54% | 1788 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 51,982 psi | 86% | 2805 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 52,808 psi | 88% | 2920 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 98% | 51,808 psi | 86% | 2894 fps | 99.3% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 48,124 psi | 80% | 2835 fps | 97% |
| Shooters World AR Plus | <<locked>> | 88% | 52,895 psi | 88% | 2927 fps | 99% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 50,154 psi | 83% | 2923 fps | 98.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 45,310 psi | 75% | 2808 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 53,679 psi | 89% | 2887 fps | 97.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 54,447 psi | 90% | 2605 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 52,330 psi | 87% | 2927 fps | 99.4% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 53,925 psi | 90% | 2864 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 51,184 psi | 85% | 2913 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 51,314 psi | 85% | 2822 fps | 99.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,947 psi | 73% | 2713 fps | 99.1% |
| Somchem S321 | <<locked>> | 96% | 53,853 psi | 89% | 2959 fps | 98.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 53,040 psi | 88% | 2867 fps | 99.8% |
| Somchem S341ᴾ | <<locked>> | 100% | 54,230 psi | 90% | 2943 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 88% | 53,403 psi | 89% | 2802 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 51,445 psi | 85% | 2822 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 53,925 psi | 90% | 2864 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 45,774 psi | 76% | 2831 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 48,617 psi | 81% | 2844 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 98% | 53,272 psi | 89% | 2917 fps | 97.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 46,905 psi | 78% | 2835 fps | 98.8% |
| Winchester 748 | <<locked>> | 98% | 51,358 psi | 85% | 2959 fps | 98.5% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 50,357 psi | 84% | 2920 fps | 96.7% |
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% | 45,745 psi | 76% | 2694 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 30,023 psi | 50% | 2448 fps | 97.3% |
| Accurate 2230 | <<locked>> | 86% | 48,921 psi | 81% | 2871 fps | 95.1% |
| Accurate 2460 | <<locked>> | 82% | 34,476 psi | 57% | 2575 fps | 95.8% |
| Accurate 2495 | <<locked>> | 82% | 23,757 psi | 39% | 2343 fps | 95.1% |
| Accurate 2520 | <<locked>> | 86% | 34,432 psi | 57% | 2612 fps | 95.3% |
| Accurate 4064 | <<locked>> | 92% | 31,676 psi | 53% | 2575 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 39,030 psi | 65% | 2569 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 80% | 39,392 psi | 65% | 2575 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 96% | 46,369 psi | 77% | 2838 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 41,553 psi | 69% | 2671 fps | 100% |
| ADI AR 2219 | 38.7 gr | 80% | 36,564 psi | 61% | 2641 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 90% | 40,814 psi | 68% | 2703 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 27,557 psi | 46% | 2461 fps | 98.8% |
| Alliant Power Pro 1200-R | 41.3 gr | 88% | 43,642 psi | 73% | 2848 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,737 psi | 58% | 2575 fps | 99.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 42,699 psi | 71% | 2677 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,492 psi | 62% | 2556 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 38,580 psi | 64% | 2612 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 90% | 37,797 psi | 63% | 2700 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 33,547 psi | 56% | 2569 fps | 96.8% |
| Hodgdon H335 | <<locked>> | 80% | 33,837 psi | 56% | 2579 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 43,120 psi | 72% | 2664 fps | 98.7% |
| Hodgdon H4895 | <<locked>> | 94% | 43,772 psi | 73% | 2799 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 44,831 psi | 74% | 2861 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,830 psi | 40% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 45,701 psi | 76% | 2812 fps | 95.5% |
| IMR 3031 | <<locked>> | 82% | 28,152 psi | 47% | 2484 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 36,390 psi | 60% | 2569 fps | 99.9% |
| IMR 4227 | <<locked>> | 80% | 48,776 psi | 81% | 2723 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 40,814 psi | 68% | 2703 fps | 95.1% |
| Lovex D073.4 | <<locked>> | 80% | 39,682 psi | 66% | 2690 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 84% | 36,854 psi | 61% | 2625 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 90% | 35,331 psi | 59% | 2644 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 47,659 psi | 79% | 2671 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 48,283 psi | 80% | 2789 fps | 95.5% |
| Lovex S062 | <<locked>> | 96% | 39,987 psi | 66% | 2707 fps | 95% |
| Norma 200 | <<locked>> | 80% | 39,175 psi | 65% | 2651 fps | 100% |
| Norma 201 | <<locked>> | 94% | 42,206 psi | 70% | 2736 fps | 95.7% |
| Norma 202 | <<locked>> | 86% | 32,648 psi | 54% | 2552 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 96% | 48,602 psi | 81% | 2881 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 92% | 48,182 psi | 80% | 2812 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,873 psi | 40% | 1598 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 48,863 psi | 81% | 2759 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 35,621 psi | 59% | 2595 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 84% | 33,895 psi | 56% | 2543 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 96% | 42,453 psi | 71% | 2730 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 39,682 psi | 66% | 2690 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 35,331 psi | 59% | 2644 fps | 95.6% |
| Shooters World Precision | <<locked>> | 96% | 39,987 psi | 66% | 2707 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 43,816 psi | 73% | 2720 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,947 psi | 73% | 2461 fps | 100% |
| SNPE Vectan SP 10 | 40.1 gr | 80% | 37,188 psi | 62% | 2648 fps | 96.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 28,979 psi | 48% | 2392 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 47,819 psi | 79% | 2858 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 32,982 psi | 55% | 2470 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 30,110 psi | 50% | 2418 fps | 95.5% |
| Somchem S321 | <<locked>> | 88% | 40,944 psi | 68% | 2733 fps | 95.6% |
| Somchem S335 | <<locked>> | 82% | 30,182 psi | 50% | 2421 fps | 95.4% |
| Somchem S341 | <<locked>> | 96% | 46,891 psi | 78% | 2822 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 41,742 psi | 69% | 2628 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 33,359 psi | 55% | 2490 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 80% | 28,979 psi | 48% | 2392 fps | 96.8% |
| Vihtavuori N135 | <<locked>> | 82% | 25,585 psi | 43% | 2375 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 86% | 30,879 psi | 51% | 2484 fps | 95% |
| Vihtavuori N530 | <<locked>> | 90% | 40,959 psi | 68% | 2700 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 90% | 33,678 psi | 56% | 2569 fps | 95.5% |
| Winchester 748 | <<locked>> | 90% | 39,204 psi | 65% | 2730 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 96% | 44,164 psi | 73% | 2808 fps | 95.2% |
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 69 powders for .308 Win. Ackley Improved loaded with the .308 | 136gr | Geco ZERO. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,025 fps; across all powders the maximum-charge window runs from 1,745 fps to 3,025 fps. Accurate 2495 gives the best case fill at 100 %, and 69 of the 69 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 136.0 gr projectile in 0.308" calls for a 1:12.5 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, SNPE Vectan SP 10, ADI AR 2219 rank at the top here: for .308 Win. Ackley Improved with the .308 | 136gr | Geco ZERO 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.