Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 150gr | Sako Powerhead Blade bullet and 82 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 Somchem S321.
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>> | 84% | 54,012 psi | 90% | 2671 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 52,156 psi | 87% | 2726 fps | 100% |
| Accurate 2200 | <<locked>> | 88% | 54,302 psi | 90% | 2808 fps | 96.8% |
| Accurate 2230 | <<locked>> | 86% | 50,850 psi | 84% | 2759 fps | 96.5% |
| Accurate 2460 | <<locked>> | 94% | 54,447 psi | 90% | 2792 fps | 99.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 46,833 psi | 78% | 2713 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 51,387 psi | 85% | 2785 fps | 99.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 43,424 psi | 72% | 2687 fps | 99.3% |
| Accurate LT-30 | <<locked>> | 88% | 51,634 psi | 86% | 2648 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 52,054 psi | 86% | 2661 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 98% | 51,445 psi | 85% | 2785 fps | 97.2% |
| ADI AR 2207 | <<locked>> | 86% | 52,069 psi | 87% | 2680 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 53,838 psi | 89% | 2802 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 51,343 psi | 85% | 2753 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 98% | 52,446 psi | 87% | 2802 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 51,982 psi | 86% | 2851 fps | 98% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 44,121 psi | 73% | 2687 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 92% | 52,910 psi | 88% | 2746 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 48,370 psi | 80% | 2756 fps | 96% |
| Alliant Reloder-7 | <<locked>> | 86% | 53,185 psi | 88% | 2690 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 53,708 psi | 89% | 2690 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 51,082 psi | 85% | 2785 fps | 95.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 43,439 psi | 72% | 2687 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 96% | 54,215 psi | 90% | 2749 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 98% | 52,605 psi | 87% | 2828 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 94% | 51,068 psi | 85% | 2851 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 92% | 51,895 psi | 86% | 2776 fps | 100% |
| Hodgdon H335 | <<locked>> | 92% | 53,200 psi | 88% | 2799 fps | 99.8% |
| Hodgdon H4198 | <<locked>> | 86% | 53,896 psi | 90% | 2697 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 51,808 psi | 86% | 2799 fps | 97.8% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 49,864 psi | 83% | 2812 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,011 psi | 55% | 1650 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 53,621 psi | 89% | 2802 fps | 98% |
| IMR 3031ᴾ | <<locked>> | 100% | 52,982 psi | 88% | 2848 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 48,805 psi | 81% | 2707 fps | 96% |
| IMR 4198 | <<locked>> | 92% | 54,070 psi | 90% | 2713 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 53,751 psi | 89% | 2641 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 49,501 psi | 82% | 2789 fps | 97% |
| IMR 8208 XBR | <<locked>> | 96% | 51,343 psi | 85% | 2753 fps | 98.3% |
| Lovex D073.4 | <<locked>> | 86% | 51,503 psi | 86% | 2756 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 92% | 50,908 psi | 85% | 2743 fps | 98.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 52,663 psi | 87% | 2818 fps | 99.6% |
| Lovex S053 | <<locked>> | 82% | 52,359 psi | 87% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 53,040 psi | 88% | 2726 fps | 97.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 47,369 psi | 79% | 2707 fps | 97.8% |
| Norma 200 | <<locked>> | 88% | 52,518 psi | 87% | 2720 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 53,127 psi | 88% | 2782 fps | 98.6% |
| Norma 202ᴾ | <<locked>> | 100% | 53,563 psi | 89% | 2802 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 47,369 psi | 79% | 2743 fps | 96.4% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 48,051 psi | 80% | 2759 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 98% | 54,099 psi | 90% | 2828 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 94% | 53,316 psi | 89% | 2756 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,982 psi | 55% | 1690 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 53,809 psi | 89% | 2677 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 51,459 psi | 85% | 2753 fps | 99.3% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 51,097 psi | 85% | 2864 fps | 96.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 42,409 psi | 70% | 2717 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 98% | 54,070 psi | 90% | 2779 fps | 99.8% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 50,183 psi | 83% | 2726 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 86% | 51,503 psi | 86% | 2756 fps | 99.3% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 52,663 psi | 87% | 2818 fps | 99.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 47,369 psi | 79% | 2707 fps | 97.8% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 52,025 psi | 86% | 2720 fps | 98% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 53,200 psi | 88% | 2441 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 54,404 psi | 90% | 2808 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 53,838 psi | 89% | 2759 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 53,461 psi | 89% | 2805 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 53,417 psi | 89% | 2707 fps | 99.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 45,672 psi | 76% | 2602 fps | 99.7% |
| Somchem S321 | <<locked>> | 94% | 52,402 psi | 87% | 2792 fps | 98.7% |
| Somchem S335 | <<locked>> | 98% | 51,561 psi | 86% | 2700 fps | 99.9% |
| Somchem S341 | <<locked>> | 98% | 52,286 psi | 87% | 2772 fps | 97.1% |
| Vihtavuori N120 | <<locked>> | 86% | 52,127 psi | 87% | 2631 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 53,287 psi | 89% | 2697 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 52,794 psi | 88% | 2700 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 47,863 psi | 80% | 2713 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 50,589 psi | 84% | 2733 fps | 99.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 40,248 psi | 67% | 2575 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 96% | 52,098 psi | 87% | 2756 fps | 98.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 48,936 psi | 81% | 2726 fps | 99.5% |
| Winchester 748 | <<locked>> | 98% | 53,664 psi | 89% | 2848 fps | 99.3% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 52,417 psi | 87% | 2812 fps | 97.9% |
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% | 47,558 psi | 79% | 2582 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 31,256 psi | 52% | 2352 fps | 98.5% |
| Accurate 2200 | <<locked>> | 84% | 47,645 psi | 79% | 2700 fps | 95.3% |
| Accurate 2230 | <<locked>> | 84% | 47,181 psi | 78% | 2700 fps | 95.7% |
| Accurate 2460 | <<locked>> | 80% | 33,562 psi | 56% | 2425 fps | 96.4% |
| Accurate 2495 | <<locked>> | 80% | 23,438 psi | 39% | 2215 fps | 96% |
| Accurate 2520 | <<locked>> | 82% | 31,357 psi | 52% | 2411 fps | 95.1% |
| Accurate 4064 | <<locked>> | 88% | 29,167 psi | 48% | 2385 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 40,509 psi | 67% | 2464 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 80% | 40,901 psi | 68% | 2474 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 92% | 42,525 psi | 71% | 2628 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 42,960 psi | 71% | 2546 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 38,276 psi | 64% | 2543 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 37,376 psi | 62% | 2500 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 28,718 psi | 48% | 2369 fps | 99.6% |
| Alliant Power Pro 1200-R | 37.8 gr | 84% | 39,784 psi | 66% | 2628 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 38,711 psi | 64% | 2582 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,318 psi | 60% | 2470 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 98% | 45,368 psi | 75% | 2703 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 44,164 psi | 73% | 2556 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,682 psi | 64% | 2451 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 47,993 psi | 80% | 2736 fps | 95% |
| Bofors RP3 | <<locked>> | 96% | 37,869 psi | 63% | 2582 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 82% | 35,273 psi | 59% | 2408 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 88% | 37,028 psi | 62% | 2556 fps | 95.8% |
| Hodgdon CFE223 | <<locked>> | 92% | 47,572 psi | 79% | 2792 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 35,012 psi | 58% | 2474 fps | 98% |
| Hodgdon H335 | <<locked>> | 80% | 35,288 psi | 59% | 2484 fps | 97.2% |
| Hodgdon H4198 | <<locked>> | 80% | 44,730 psi | 74% | 2552 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 90% | 40,059 psi | 67% | 2589 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 40,944 psi | 68% | 2651 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,120 psi | 40% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 41,771 psi | 69% | 2602 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 27,499 psi | 46% | 2339 fps | 96.3% |
| IMR 4064 | <<locked>> | 98% | 45,745 psi | 76% | 2654 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 37,913 psi | 63% | 2461 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 50,299 psi | 84% | 2592 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 43,497 psi | 72% | 2684 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 86% | 37,376 psi | 62% | 2500 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 41,481 psi | 69% | 2589 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 82% | 35,839 psi | 60% | 2474 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 86% | 32,242 psi | 54% | 2444 fps | 95.5% |
| Lovex S053 | <<locked>> | 80% | 49,429 psi | 82% | 2546 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 44,338 psi | 74% | 2582 fps | 95.5% |
| Lovex S062 | <<locked>> | 92% | 36,825 psi | 61% | 2510 fps | 95% |
| Norma 200 | <<locked>> | 80% | 40,727 psi | 68% | 2536 fps | 100% |
| Norma 201 | <<locked>> | 90% | 38,740 psi | 64% | 2533 fps | 95.6% |
| Norma 202 | <<locked>> | 82% | 29,849 psi | 50% | 2356 fps | 95.3% |
| Norma 203B | <<locked>> | 98% | 44,411 psi | 74% | 2690 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 98% | 45,136 psi | 75% | 2710 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 92% | 44,077 psi | 73% | 2664 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 88% | 44,034 psi | 73% | 2602 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,250 psi | 40% | 1509 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 50,459 psi | 84% | 2631 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 34,679 psi | 58% | 2441 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 47,471 psi | 79% | 2805 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 37,115 psi | 62% | 2598 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 31,241 psi | 52% | 2349 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 92% | 38,972 psi | 65% | 2530 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 41,481 psi | 69% | 2589 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 32,242 psi | 54% | 2444 fps | 95.5% |
| Shooters World Precision | <<locked>> | 92% | 36,825 psi | 61% | 2510 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 39,465 psi | 66% | 2503 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,078 psi | 75% | 2336 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,754 psi | 64% | 2546 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,796 psi | 61% | 2477 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 43,888 psi | 73% | 2651 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,182 psi | 50% | 2277 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 27,615 psi | 46% | 2234 fps | 95.4% |
| Somchem S321 | 40.7 gr | 84% | 37,231 psi | 62% | 2523 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 29,472 psi | 49% | 2283 fps | 96.1% |
| Somchem S341 | <<locked>> | 94% | 45,600 psi | 76% | 2667 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 43,062 psi | 72% | 2503 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,505 psi | 57% | 2382 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 30,023 psi | 50% | 2293 fps | 98% |
| Vihtavuori N135 | <<locked>> | 80% | 24,961 psi | 41% | 2238 fps | 96.4% |
| Vihtavuori N140 | <<locked>> | 84% | 30,197 psi | 50% | 2343 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 96% | 35,288 psi | 59% | 2470 fps | 95% |
| Vihtavuori N530 | <<locked>> | 86% | 37,173 psi | 62% | 2493 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 86% | 30,763 psi | 51% | 2372 fps | 95.4% |
| Winchester 748 | 40.5 gr | 86% | 35,679 psi | 59% | 2523 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 92% | 39,943 psi | 66% | 2595 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 82 powders for .308 Win. Ackley Improved loaded with the .308 | 150gr | Sako Powerhead Blade. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,864 fps. Accurate 2495 gives the best case fill at 100 %, and 82 of the 82 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 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Alliant Reloder- TS 15.5 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, Somchem S321 rank at the top here: for .308 Win. Ackley Improved with the .308 | 150gr | Sako Powerhead Blade 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.