Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 150gr | Hornady ECX bullet and 85 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, Winchester 748 and Ramshot Wild Boar.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 52,272 psi | 87% | 2664 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 54,201 psi | 90% | 2766 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 52,562 psi | 87% | 2802 fps | 96.7% |
| Accurate 2230 | <<locked>> | 86% | 52,823 psi | 88% | 2808 fps | 97.2% |
| Accurate 2460 | <<locked>> | 92% | 52,823 psi | 88% | 2785 fps | 99.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 49,168 psi | 82% | 2759 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 53,954 psi | 90% | 2838 fps | 99.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 45,629 psi | 76% | 2736 fps | 99.6% |
| Accurate LT-30 | <<locked>> | 88% | 53,243 psi | 88% | 2687 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 53,722 psi | 89% | 2703 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 98% | 53,490 psi | 89% | 2835 fps | 97.8% |
| ADI AR 2207 | <<locked>> | 86% | 53,795 psi | 89% | 2717 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 47,935 psi | 80% | 2717 fps | 95.9% |
| ADI AR 2219 | <<locked>> | 88% | 52,431 psi | 87% | 2799 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 53,055 psi | 88% | 2795 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 96% | 51,082 psi | 85% | 2799 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 54,157 psi | 90% | 2900 fps | 98.5% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 53,156 psi | 88% | 2917 fps | 96.5% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 45,788 psi | 76% | 2730 fps | 97.3% |
| Alliant Reloder-10x | <<locked>> | 90% | 51,488 psi | 86% | 2743 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 50,357 psi | 84% | 2805 fps | 96.7% |
| Alliant Reloder-7 | <<locked>> | 84% | 51,808 psi | 86% | 2687 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 51,793 psi | 86% | 2680 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 53,447 psi | 89% | 2841 fps | 96.6% |
| Bofors RP3ᴾ | <<locked>> | 100% | 45,411 psi | 75% | 2736 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 94% | 52,649 psi | 87% | 2746 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 96% | 51,213 psi | 85% | 2825 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 94% | 53,316 psi | 89% | 2910 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 92% | 53,954 psi | 90% | 2818 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 51,619 psi | 86% | 2792 fps | 99.8% |
| Hodgdon H4198 | <<locked>> | 84% | 52,011 psi | 86% | 2687 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 53,824 psi | 89% | 2844 fps | 98.4% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 51,953 psi | 86% | 2864 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,098 psi | 55% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 52,243 psi | 87% | 2799 fps | 98% |
| IMR 3031 | <<locked>> | 98% | 51,590 psi | 86% | 2841 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 50,430 psi | 84% | 2749 fps | 96.7% |
| IMR 4198 | <<locked>> | 90% | 52,620 psi | 87% | 2710 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 51,532 psi | 86% | 2841 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 96% | 53,055 psi | 88% | 2795 fps | 98.7% |
| Lovex D073.4 | <<locked>> | 86% | 53,577 psi | 89% | 2802 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 92% | 53,026 psi | 88% | 2789 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 98% | 51,343 psi | 85% | 2812 fps | 99.6% |
| Lovex S053 | <<locked>> | 82% | 53,853 psi | 89% | 2618 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 51,488 psi | 86% | 2723 fps | 97.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 49,037 psi | 81% | 2749 fps | 98.3% |
| Norma 200 | <<locked>> | 88% | 54,462 psi | 90% | 2759 fps | 100% |
| Norma 201 | <<locked>> | 98% | 51,953 psi | 86% | 2782 fps | 98.7% |
| Norma 202 | <<locked>> | 98% | 51,967 psi | 86% | 2795 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 49,356 psi | 82% | 2792 fps | 97.1% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 49,980 psi | 83% | 2812 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 96% | 52,591 psi | 87% | 2822 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 92% | 51,953 psi | 86% | 2753 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,098 psi | 55% | 1706 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 53,330 psi | 89% | 2799 fps | 99.6% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 53,069 psi | 88% | 2917 fps | 97.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 44,092 psi | 73% | 2776 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 96% | 52,692 psi | 88% | 2776 fps | 99.8% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 51,924 psi | 86% | 2772 fps | 98.6% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 42,105 psi | 70% | 2667 fps | 96.2% |
| Shooters World AR Plus | <<locked>> | 86% | 53,577 psi | 89% | 2802 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 98% | 51,343 psi | 85% | 2812 fps | 99.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 49,037 psi | 81% | 2749 fps | 98.3% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 54,085 psi | 90% | 2766 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 54,302 psi | 90% | 2467 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 52,562 psi | 87% | 2799 fps | 99.9% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 44,976 psi | 75% | 2733 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 52,707 psi | 88% | 2759 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 51,967 psi | 86% | 2802 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 51,880 psi | 86% | 2703 fps | 99.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 47,659 psi | 79% | 2648 fps | 99.9% |
| Somchem S321 | <<locked>> | 94% | 54,331 psi | 90% | 2838 fps | 99.1% |
| Somchem S335 | <<locked>> | 98% | 53,577 psi | 89% | 2746 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 50,734 psi | 84% | 2769 fps | 97.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 43,642 psi | 73% | 2680 fps | 96.3% |
| Vihtavuori N120 | <<locked>> | 86% | 53,824 psi | 89% | 2664 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 51,663 psi | 86% | 2687 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 51,401 psi | 85% | 2697 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 50,227 psi | 83% | 2762 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 52,634 psi | 87% | 2776 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 42,003 psi | 70% | 2621 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 96% | 53,838 psi | 89% | 2799 fps | 98.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 50,792 psi | 84% | 2769 fps | 99.7% |
| Winchester 748 | <<locked>> | 96% | 51,909 psi | 86% | 2838 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 98% | 51,242 psi | 85% | 2812 fps | 98% |
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% | 48,805 psi | 81% | 2612 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 32,619 psi | 54% | 2395 fps | 98.9% |
| Accurate 2200 | <<locked>> | 82% | 45,963 psi | 76% | 2687 fps | 95.2% |
| Accurate 2230 | <<locked>> | 82% | 45,759 psi | 76% | 2694 fps | 95.7% |
| Accurate 2460 | <<locked>> | 80% | 35,070 psi | 58% | 2470 fps | 97.1% |
| Accurate 2495 | <<locked>> | 80% | 24,685 psi | 41% | 2260 fps | 96.8% |
| Accurate 2520 | <<locked>> | 80% | 30,487 psi | 51% | 2402 fps | 95% |
| Accurate 4064 | <<locked>> | 86% | 28,645 psi | 48% | 2379 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 41,597 psi | 69% | 2500 fps | 99.5% |
| Accurate LT-32 | <<locked>> | 80% | 41,959 psi | 70% | 2510 fps | 98.3% |
| ADI AR 2206H | <<locked>> | 90% | 41,263 psi | 69% | 2618 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 44,701 psi | 74% | 2585 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 45,063 psi | 75% | 2667 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 39,639 psi | 66% | 2585 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 36,448 psi | 61% | 2493 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 29,965 psi | 50% | 2415 fps | 99.9% |
| Alliant Power Pro 1200-R | 38.2 gr | 82% | 38,609 psi | 64% | 2618 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 49,951 psi | 83% | 2861 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 37,826 psi | 63% | 2579 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,579 psi | 62% | 2510 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 44,106 psi | 73% | 2697 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 45,745 psi | 76% | 2595 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 39,972 psi | 66% | 2490 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 46,383 psi | 77% | 2726 fps | 95% |
| Bofors RP3 | <<locked>> | 94% | 36,970 psi | 61% | 2575 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 82% | 36,434 psi | 61% | 2451 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 86% | 36,013 psi | 60% | 2546 fps | 95.7% |
| Hodgdon CFE223 | <<locked>> | 90% | 46,151 psi | 77% | 2785 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 36,042 psi | 60% | 2510 fps | 98.5% |
| Hodgdon H335 | <<locked>> | 80% | 36,492 psi | 61% | 2523 fps | 97.7% |
| Hodgdon H4198 | <<locked>> | 80% | 45,876 psi | 76% | 2592 fps | 99.6% |
| Hodgdon H4895 | <<locked>> | 88% | 38,972 psi | 65% | 2582 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 39,827 psi | 66% | 2644 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,482 psi | 41% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 40,509 psi | 67% | 2592 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 28,485 psi | 47% | 2382 fps | 97% |
| IMR 4064 | <<locked>> | 96% | 44,469 psi | 74% | 2651 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 38,972 psi | 65% | 2493 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 42,351 psi | 70% | 2680 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 84% | 36,448 psi | 61% | 2493 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 43,192 psi | 72% | 2635 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 80% | 34,679 psi | 58% | 2461 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 84% | 31,314 psi | 52% | 2434 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 50,575 psi | 84% | 2575 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 42,975 psi | 71% | 2575 fps | 95.5% |
| Lovex S062 | <<locked>> | 90% | 35,839 psi | 60% | 2500 fps | 95% |
| Norma 200 | <<locked>> | 80% | 42,366 psi | 70% | 2579 fps | 100% |
| Norma 201 | <<locked>> | 88% | 37,710 psi | 63% | 2526 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 29,109 psi | 48% | 2346 fps | 95.2% |
| Norma 203B | <<locked>> | 96% | 43,207 psi | 72% | 2684 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 96% | 43,918 psi | 73% | 2703 fps | 95.4% |
| Ramshot Wild Boar | 44.8 gr | 90% | 42,859 psi | 71% | 2657 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 86% | 42,598 psi | 71% | 2592 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,337 psi | 40% | 1522 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,882 psi | 60% | 2484 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 46,354 psi | 77% | 2802 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 36,172 psi | 60% | 2598 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 32,343 psi | 54% | 2388 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 90% | 37,956 psi | 63% | 2523 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 98% | 39,407 psi | 65% | 2615 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 43,192 psi | 72% | 2635 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 31,314 psi | 52% | 2434 fps | 95.4% |
| Shooters World Precision | <<locked>> | 90% | 35,839 psi | 60% | 2500 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 38,101 psi | 63% | 2493 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 46,311 psi | 77% | 2365 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 40,016 psi | 66% | 2585 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 42,308 psi | 70% | 2680 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 38,363 psi | 64% | 2520 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 42,685 psi | 71% | 2644 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,401 psi | 52% | 2323 fps | 96% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 26,847 psi | 45% | 2224 fps | 95.4% |
| Somchem S321 | <<locked>> | 82% | 36,013 psi | 60% | 2510 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 30,632 psi | 51% | 2323 fps | 96.8% |
| Somchem S341 | <<locked>> | 92% | 44,193 psi | 73% | 2657 fps | 95.6% |
| Somchem S355 | <<locked>> | 98% | 40,959 psi | 68% | 2628 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 44,773 psi | 74% | 2543 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 35,897 psi | 60% | 2425 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 31,270 psi | 52% | 2336 fps | 98.5% |
| Vihtavuori N135 | <<locked>> | 80% | 26,150 psi | 43% | 2283 fps | 97.2% |
| Vihtavuori N140 | <<locked>> | 82% | 29,327 psi | 49% | 2336 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 94% | 34,374 psi | 57% | 2467 fps | 95% |
| Vihtavuori N530 | <<locked>> | 84% | 36,143 psi | 60% | 2484 fps | 95% |
| Vihtavuori N540 | <<locked>> | 84% | 30,008 psi | 50% | 2365 fps | 95.4% |
| Winchester 748 | 41 gr | 84% | 34,708 psi | 58% | 2513 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 38,885 psi | 65% | 2589 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 85 powders for .308 Win. Ackley Improved loaded with the .308 | 150gr | Hornady ECX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,917 fps. Accurate 2495 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2208 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, Winchester 748, Ramshot Wild Boar rank at the top here: for .308 Win. Ackley Improved with the .308 | 150gr | Hornady ECX 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.