Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 134gr | CutEdge ESP Raptor bullet and 55 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H335, Hodgdon H322 and SNPE Vectan SP 10.
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>> | 86% | 51,184 psi | 85% | 2753 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 50,662 psi | 84% | 2831 fps | 99.9% |
| Accurate 2460 | <<locked>> | 98% | 53,127 psi | 88% | 2890 fps | 98.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,159 psi | 63% | 2694 fps | 99.1% |
| Accurate 2520ᴾ | <<locked>> | 100% | 49,821 psi | 83% | 2881 fps | 98.1% |
| Accurate 4064ᴾ | <<locked>> | 100% | 35,578 psi | 59% | 2654 fps | 96.2% |
| Accurate LT-30 | <<locked>> | 92% | 51,837 psi | 86% | 2766 fps | 99.5% |
| Accurate LT-32 | <<locked>> | 92% | 52,330 psi | 87% | 2776 fps | 98.4% |
| ADI AR 2207 | <<locked>> | 90% | 51,285 psi | 85% | 2808 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 52,982 psi | 88% | 2913 fps | 99.6% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 50,459 psi | 84% | 2848 fps | 96.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 47,137 psi | 78% | 2864 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 53,795 psi | 89% | 2999 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 96% | 51,387 psi | 85% | 2861 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 52,779 psi | 88% | 2815 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 53,679 psi | 89% | 2808 fps | 99.8% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 53,664 psi | 89% | 2851 fps | 97.6% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 47,108 psi | 78% | 2858 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 96% | 50,952 psi | 85% | 2884 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 96% | 52,504 psi | 87% | 2910 fps | 99% |
| Hodgdon H4198 | <<locked>> | 90% | 54,056 psi | 90% | 2815 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,807 psi | 53% | 1706 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,541 psi | 74% | 2841 fps | 99.3% |
| IMR 4198 | <<locked>> | 96% | 53,243 psi | 88% | 2838 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 54,157 psi | 90% | 2776 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 50,459 psi | 84% | 2848 fps | 96.4% |
| Lovex D073.4 | <<locked>> | 90% | 50,386 psi | 84% | 2858 fps | 98% |
| Lovex D073.5 | <<locked>> | 98% | 53,577 psi | 89% | 2897 fps | 97.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 43,772 psi | 73% | 2795 fps | 97% |
| Lovex S053 | <<locked>> | 86% | 52,402 psi | 87% | 2720 fps | 100% |
| Norma 200 | <<locked>> | 92% | 51,532 psi | 86% | 2844 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 45,556 psi | 76% | 2799 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,662 psi | 53% | 1745 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 53,824 psi | 89% | 2812 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 53,983 psi | 90% | 2907 fps | 98.4% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 49,298 psi | 82% | 2828 fps | 98.4% |
| Shooters World AR Plus | <<locked>> | 90% | 50,386 psi | 84% | 2858 fps | 98% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 43,772 psi | 73% | 2795 fps | 97% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 51,764 psi | 86% | 2818 fps | 96.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 53,127 psi | 88% | 2569 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 53,301 psi | 89% | 2917 fps | 99% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 52,794 psi | 88% | 2874 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,255 psi | 82% | 2759 fps | 98.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,276 psi | 65% | 2598 fps | 97.5% |
| Somchem S321 | <<locked>> | 98% | 51,445 psi | 85% | 2890 fps | 97% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,326 psi | 79% | 2753 fps | 98.9% |
| Vihtavuori N110 | <<locked>> | 82% | 54,128 psi | 90% | 2654 fps | 100% |
| Vihtavuori N120 | <<locked>> | 90% | 51,358 psi | 85% | 2759 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 52,243 psi | 87% | 2808 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 48,341 psi | 80% | 2759 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,074 psi | 67% | 2710 fps | 99.2% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,091 psi | 72% | 2726 fps | 97.8% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 50,908 psi | 85% | 2848 fps | 96.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,553 psi | 69% | 2713 fps | 96.9% |
| Winchester 748ᴾ | <<locked>> | 100% | 48,907 psi | 81% | 2887 fps | 97.1% |
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% | 41,814 psi | 69% | 2602 fps | 99.7% |
| Accurate 2015 | <<locked>> | 80% | 26,542 psi | 44% | 2336 fps | 95% |
| Accurate 2460 | <<locked>> | 88% | 37,391 psi | 62% | 2618 fps | 95.7% |
| Accurate 2495 | <<locked>> | 90% | 26,847 psi | 45% | 2428 fps | 95.8% |
| Accurate 2520 | <<locked>> | 92% | 37,362 psi | 62% | 2657 fps | 95.2% |
| Accurate 4064 | <<locked>> | 98% | 33,344 psi | 55% | 2602 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 35,650 psi | 59% | 2470 fps | 96.7% |
| Accurate LT-32 | <<locked>> | 82% | 38,566 psi | 64% | 2526 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 37,376 psi | 62% | 2579 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 32,793 psi | 54% | 2526 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 98% | 47,166 psi | 78% | 2795 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 24,613 psi | 41% | 2346 fps | 96.7% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 47,108 psi | 78% | 2887 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,082 psi | 52% | 2470 fps | 98% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,696 psi | 64% | 2579 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,866 psi | 56% | 2454 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 92% | 41,916 psi | 70% | 2651 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 98% | 43,947 psi | 73% | 2799 fps | 95.7% |
| Hodgdon H322 | 35 gr | 82% | 32,068 psi | 53% | 2507 fps | 95.2% |
| Hodgdon H335 | 39.3 gr | 86% | 37,072 psi | 62% | 2631 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 39,378 psi | 65% | 2562 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,264 psi | 39% | 1522 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 30,429 psi | 51% | 2523 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 33,272 psi | 55% | 2474 fps | 99.1% |
| IMR 4227 | <<locked>> | 80% | 44,904 psi | 75% | 2638 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 47,166 psi | 78% | 2795 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 82% | 37,884 psi | 63% | 2631 fps | 95% |
| Lovex D073.5 | <<locked>> | 90% | 40,132 psi | 67% | 2671 fps | 95% |
| Lovex D073.6 | <<locked>> | 96% | 37,884 psi | 63% | 2680 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 43,976 psi | 73% | 2595 fps | 100% |
| Norma 200 | <<locked>> | 80% | 35,114 psi | 58% | 2549 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 35,085 psi | 58% | 2589 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,018 psi | 38% | 1555 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,599 psi | 74% | 2671 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 39,015 psi | 65% | 2644 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 90% | 36,564 psi | 61% | 2585 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 82% | 37,884 psi | 63% | 2631 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 96% | 37,884 psi | 63% | 2680 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 48,298 psi | 80% | 2766 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,698 psi | 68% | 2395 fps | 100% |
| SNPE Vectan SP 10 | 37.5 gr | 82% | 35,607 psi | 59% | 2589 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,662 psi | 53% | 2470 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 36,071 psi | 60% | 2516 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 32,648 psi | 54% | 2454 fps | 95.4% |
| Somchem S321 | <<locked>> | 94% | 44,875 psi | 75% | 2779 fps | 95.5% |
| Somchem S335 | <<locked>> | 88% | 32,634 psi | 54% | 2464 fps | 95.3% |
| Vihtavuori N110 | <<locked>> | 80% | 51,213 psi | 85% | 2618 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 37,608 psi | 62% | 2543 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,834 psi | 50% | 2385 fps | 97.3% |
| Vihtavuori N133 | <<locked>> | 82% | 27,804 psi | 46% | 2336 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 88% | 27,441 psi | 46% | 2415 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 94% | 35,650 psi | 59% | 2575 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 96% | 44,527 psi | 74% | 2740 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 96% | 36,289 psi | 60% | 2605 fps | 95.4% |
| Winchester 748 | <<locked>> | 96% | 42,685 psi | 71% | 2772 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 55 powders for .308 Win. Ackley Improved loaded with the .308 | 134gr | CutEdge ESP Raptor. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,999 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,999 fps. Accurate 2015 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 134.0 gr projectile in 0.308" calls for a 1:9.5 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. Hodgdon H335, Hodgdon H322, SNPE Vectan SP 10 rank at the top here: for .308 Win. Ackley Improved with the .308 | 134gr | CutEdge ESP Raptor 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.