Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 150gr | Osprey Virtus 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% | 52,373 psi | 87% | 2667 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 54,302 psi | 90% | 2769 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 52,707 psi | 88% | 2805 fps | 96.8% |
| Accurate 2230 | <<locked>> | 86% | 52,953 psi | 88% | 2812 fps | 97.2% |
| Accurate 2460 | <<locked>> | 92% | 52,895 psi | 88% | 2785 fps | 99.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 49,284 psi | 82% | 2762 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 54,056 psi | 90% | 2841 fps | 99.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 45,745 psi | 76% | 2740 fps | 99.7% |
| Accurate LT-30 | <<locked>> | 88% | 53,374 psi | 89% | 2690 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 53,795 psi | 89% | 2707 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 98% | 53,548 psi | 89% | 2835 fps | 97.8% |
| ADI AR 2207 | <<locked>> | 86% | 53,954 psi | 90% | 2720 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 48,312 psi | 80% | 2723 fps | 96% |
| ADI AR 2219 | <<locked>> | 88% | 52,504 psi | 87% | 2802 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 53,490 psi | 89% | 2805 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 96% | 51,227 psi | 85% | 2802 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 54,259 psi | 90% | 2904 fps | 98.6% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 53,592 psi | 89% | 2923 fps | 96.7% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 46,180 psi | 77% | 2740 fps | 97.4% |
| Alliant Reloder-10x | <<locked>> | 90% | 51,590 psi | 86% | 2746 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 50,386 psi | 84% | 2808 fps | 96.8% |
| Alliant Reloder-7 | <<locked>> | 84% | 51,909 psi | 86% | 2690 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 52,170 psi | 87% | 2687 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 53,476 psi | 89% | 2844 fps | 96.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 45,469 psi | 76% | 2740 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 94% | 53,055 psi | 88% | 2753 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 96% | 51,213 psi | 85% | 2825 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 94% | 53,374 psi | 89% | 2910 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 92% | 54,418 psi | 90% | 2825 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 51,735 psi | 86% | 2795 fps | 99.9% |
| Hodgdon H4198 | <<locked>> | 84% | 52,098 psi | 87% | 2690 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 53,925 psi | 90% | 2848 fps | 98.4% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 51,982 psi | 86% | 2867 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,996 psi | 55% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 52,678 psi | 88% | 2805 fps | 98.1% |
| IMR 3031 | <<locked>> | 98% | 52,069 psi | 87% | 2851 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 50,836 psi | 84% | 2759 fps | 96.8% |
| IMR 4198 | <<locked>> | 90% | 52,736 psi | 88% | 2713 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 51,561 psi | 86% | 2841 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 96% | 53,490 psi | 89% | 2805 fps | 98.8% |
| Lovex D073.4 | <<locked>> | 86% | 53,635 psi | 89% | 2805 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 92% | 53,055 psi | 88% | 2792 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 98% | 51,401 psi | 85% | 2815 fps | 99.6% |
| Lovex S053 | <<locked>> | 82% | 53,954 psi | 90% | 2621 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 51,532 psi | 86% | 2723 fps | 97.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 49,443 psi | 82% | 2759 fps | 98.4% |
| Norma 200 | <<locked>> | 86% | 51,285 psi | 85% | 2717 fps | 100% |
| Norma 201 | <<locked>> | 98% | 51,982 psi | 86% | 2785 fps | 98.7% |
| Norma 202 | <<locked>> | 98% | 52,388 psi | 87% | 2805 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 49,385 psi | 82% | 2795 fps | 97.2% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 50,314 psi | 84% | 2818 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 96% | 52,591 psi | 87% | 2825 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 92% | 52,040 psi | 86% | 2756 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,272 psi | 55% | 1709 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 53,374 psi | 89% | 2799 fps | 99.6% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 53,476 psi | 89% | 2923 fps | 97.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 44,106 psi | 73% | 2779 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 96% | 52,823 psi | 88% | 2779 fps | 99.8% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 52,359 psi | 87% | 2779 fps | 98.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 42,192 psi | 70% | 2671 fps | 96.3% |
| Shooters World AR Plus | <<locked>> | 86% | 53,635 psi | 89% | 2805 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 98% | 51,401 psi | 85% | 2815 fps | 99.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 49,443 psi | 82% | 2759 fps | 98.4% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 54,114 psi | 90% | 2769 fps | 98.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 54,447 psi | 90% | 2470 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 52,649 psi | 87% | 2802 fps | 99.9% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 45,295 psi | 75% | 2740 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 52,808 psi | 88% | 2762 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 52,054 psi | 86% | 2805 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 51,953 psi | 86% | 2703 fps | 99.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 47,732 psi | 79% | 2651 fps | 99.9% |
| Somchem S321 | <<locked>> | 92% | 51,184 psi | 85% | 2792 fps | 98.8% |
| Somchem S335 | <<locked>> | 98% | 53,650 psi | 89% | 2749 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 51,155 psi | 85% | 2776 fps | 97.2% |
| Somchem S355ᴾ | <<locked>> | 100% | 43,729 psi | 73% | 2684 fps | 96.4% |
| Vihtavuori N120 | <<locked>> | 86% | 53,940 psi | 90% | 2667 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 52,112 psi | 87% | 2697 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 51,459 psi | 85% | 2700 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 50,357 psi | 84% | 2766 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 52,692 psi | 88% | 2779 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 42,090 psi | 70% | 2625 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 96% | 54,259 psi | 90% | 2808 fps | 98.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 51,184 psi | 85% | 2776 fps | 99.8% |
| Winchester 748 | <<locked>> | 96% | 52,315 psi | 87% | 2848 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 98% | 51,285 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% | 48,950 psi | 81% | 2618 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 32,721 psi | 54% | 2398 fps | 99% |
| Accurate 2200 | <<locked>> | 82% | 46,050 psi | 77% | 2694 fps | 95.3% |
| Accurate 2230 | <<locked>> | 82% | 45,832 psi | 76% | 2697 fps | 95.7% |
| Accurate 2460 | <<locked>> | 80% | 35,143 psi | 58% | 2474 fps | 97.2% |
| Accurate 2495 | <<locked>> | 80% | 24,772 psi | 41% | 2264 fps | 96.9% |
| Accurate 2520 | <<locked>> | 80% | 30,560 psi | 51% | 2405 fps | 95.1% |
| Accurate 4064 | <<locked>> | 86% | 28,747 psi | 48% | 2385 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 41,698 psi | 69% | 2503 fps | 99.5% |
| Accurate LT-32 | <<locked>> | 80% | 42,061 psi | 70% | 2513 fps | 98.3% |
| ADI AR 2206H | <<locked>> | 90% | 41,611 psi | 69% | 2628 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 44,831 psi | 74% | 2589 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 45,426 psi | 75% | 2674 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 39,726 psi | 66% | 2585 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 36,521 psi | 61% | 2497 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 30,052 psi | 50% | 2418 fps | 99.9% |
| Alliant Power Pro 1200-R | 38.3 gr | 82% | 38,711 psi | 64% | 2621 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 50,009 psi | 83% | 2861 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 37,913 psi | 63% | 2582 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,695 psi | 63% | 2513 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 44,483 psi | 74% | 2703 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 45,861 psi | 76% | 2598 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 40,045 psi | 67% | 2490 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 46,775 psi | 78% | 2733 fps | 95.1% |
| Bofors RP3 | <<locked>> | 94% | 37,043 psi | 62% | 2579 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 34,345 psi | 57% | 2405 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 86% | 36,071 psi | 60% | 2549 fps | 95.8% |
| Hodgdon CFE223 | <<locked>> | 90% | 46,557 psi | 77% | 2795 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 36,158 psi | 60% | 2513 fps | 98.5% |
| Hodgdon H335 | <<locked>> | 80% | 36,564 psi | 61% | 2526 fps | 97.8% |
| Hodgdon H4198 | <<locked>> | 80% | 45,977 psi | 76% | 2592 fps | 99.6% |
| Hodgdon H4895 | <<locked>> | 88% | 39,044 psi | 65% | 2585 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 39,856 psi | 66% | 2648 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,410 psi | 41% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 40,553 psi | 67% | 2595 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 28,572 psi | 47% | 2385 fps | 97.1% |
| IMR 4064 | <<locked>> | 96% | 44,846 psi | 75% | 2661 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 39,088 psi | 65% | 2497 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 42,467 psi | 71% | 2684 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 84% | 36,521 psi | 61% | 2497 fps | 95.1% |
| Lovex D073.4 | <<locked>> | 80% | 43,265 psi | 72% | 2638 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 80% | 34,809 psi | 58% | 2467 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 84% | 31,589 psi | 52% | 2441 fps | 95.5% |
| Lovex S053 | <<locked>> | 80% | 50,705 psi | 84% | 2579 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 43,033 psi | 71% | 2579 fps | 95.5% |
| Lovex S062 | <<locked>> | 90% | 35,969 psi | 60% | 2507 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 42,467 psi | 71% | 2582 fps | 100% |
| Norma 201 | <<locked>> | 88% | 37,782 psi | 63% | 2530 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 29,196 psi | 49% | 2349 fps | 95.3% |
| Norma 203B | <<locked>> | 94% | 40,669 psi | 68% | 2638 fps | 95% |
| Ramshot Big Game | <<locked>> | 96% | 43,990 psi | 73% | 2707 fps | 95.4% |
| Ramshot Wild Boar | 44.9 gr | 90% | 42,888 psi | 71% | 2661 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 86% | 42,699 psi | 71% | 2595 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,265 psi | 40% | 1522 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 36,013 psi | 60% | 2487 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 43,569 psi | 72% | 2749 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 36,245 psi | 60% | 2602 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 32,430 psi | 54% | 2395 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 88% | 35,984 psi | 60% | 2480 fps | 95% |
| Rottweil R 903 | <<locked>> | 98% | 39,494 psi | 66% | 2618 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 43,265 psi | 72% | 2638 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 31,589 psi | 52% | 2441 fps | 95.5% |
| Shooters World Precision | <<locked>> | 90% | 35,969 psi | 60% | 2507 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 38,174 psi | 63% | 2497 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 46,470 psi | 77% | 2369 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 40,103 psi | 67% | 2589 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 42,351 psi | 70% | 2684 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 38,479 psi | 64% | 2526 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 42,786 psi | 71% | 2648 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,502 psi | 52% | 2326 fps | 96.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 26,919 psi | 45% | 2228 fps | 95.4% |
| Somchem S321 | <<locked>> | 82% | 36,071 psi | 60% | 2513 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 30,719 psi | 51% | 2326 fps | 96.8% |
| Somchem S341 | <<locked>> | 92% | 44,541 psi | 74% | 2667 fps | 95.8% |
| Somchem S355 | <<locked>> | 98% | 41,002 psi | 68% | 2631 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 44,904 psi | 75% | 2543 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 35,998 psi | 60% | 2428 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 31,357 psi | 52% | 2339 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 80% | 26,252 psi | 44% | 2287 fps | 97.3% |
| Vihtavuori N140 | <<locked>> | 82% | 29,399 psi | 49% | 2336 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 94% | 34,708 psi | 58% | 2477 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 84% | 36,216 psi | 60% | 2487 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 84% | 30,110 psi | 50% | 2369 fps | 95.4% |
| Winchester 748 | 41.1 gr | 84% | 34,766 psi | 58% | 2516 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 38,914 psi | 65% | 2592 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 | Osprey Virtus. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,923 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,923 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 | Osprey Virtus 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.