Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 150gr | Barnes RRLP 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>> | 82% | 51,155 psi | 85% | 2618 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 52,968 psi | 88% | 2723 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 51,343 psi | 85% | 2749 fps | 96% |
| Accurate 2230 | <<locked>> | 86% | 51,256 psi | 85% | 2753 fps | 96.4% |
| Accurate 2460 | <<locked>> | 92% | 51,605 psi | 86% | 2736 fps | 99.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 47,776 psi | 79% | 2713 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 51,996 psi | 86% | 2782 fps | 99.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 44,338 psi | 74% | 2687 fps | 99.3% |
| Accurate LT-30 | <<locked>> | 88% | 51,967 psi | 86% | 2638 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 52,460 psi | 87% | 2654 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 98% | 51,880 psi | 86% | 2776 fps | 97.1% |
| ADI AR 2207 | <<locked>> | 86% | 52,533 psi | 87% | 2671 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 54,418 psi | 90% | 2795 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 51,706 psi | 86% | 2746 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 98% | 52,663 psi | 87% | 2795 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 52,649 psi | 87% | 2848 fps | 98% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 44,585 psi | 74% | 2680 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 92% | 53,200 psi | 88% | 2736 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 48,834 psi | 81% | 2746 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 86% | 53,780 psi | 89% | 2684 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 53,954 psi | 90% | 2680 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 51,532 psi | 86% | 2779 fps | 95.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 44,121 psi | 73% | 2684 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 94% | 51,590 psi | 86% | 2697 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 98% | 53,084 psi | 88% | 2822 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 94% | 51,503 psi | 86% | 2844 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 92% | 52,417 psi | 87% | 2769 fps | 100% |
| Hodgdon H335 | <<locked>> | 92% | 53,940 psi | 90% | 2795 fps | 99.8% |
| Hodgdon H4198 | <<locked>> | 86% | 54,186 psi | 90% | 2687 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 52,141 psi | 87% | 2789 fps | 97.7% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 50,314 psi | 84% | 2805 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,257 psi | 55% | 1644 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 54,288 psi | 90% | 2799 fps | 97.9% |
| IMR 3031ᴾ | <<locked>> | 100% | 53,272 psi | 89% | 2838 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 49,124 psi | 82% | 2697 fps | 95.9% |
| IMR 4198 | <<locked>> | 92% | 54,331 psi | 90% | 2707 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 53,882 psi | 90% | 2628 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 49,937 psi | 83% | 2782 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 96% | 51,706 psi | 86% | 2746 fps | 98.2% |
| Lovex D073.4 | <<locked>> | 86% | 51,924 psi | 86% | 2749 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 92% | 51,503 psi | 86% | 2736 fps | 98.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 53,243 psi | 88% | 2812 fps | 99.6% |
| Lovex S053 | <<locked>> | 82% | 52,953 psi | 88% | 2579 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 53,330 psi | 89% | 2717 fps | 97.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 47,892 psi | 80% | 2700 fps | 97.7% |
| Norma 200 | <<locked>> | 88% | 53,417 psi | 89% | 2717 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 53,737 psi | 89% | 2776 fps | 98.6% |
| Norma 202ᴾ | <<locked>> | 100% | 54,012 psi | 90% | 2795 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 47,877 psi | 80% | 2736 fps | 96.4% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 48,617 psi | 81% | 2756 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 96% | 50,807 psi | 84% | 2766 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 94% | 54,070 psi | 90% | 2753 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,315 psi | 55% | 1683 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 54,128 psi | 90% | 2667 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 52,156 psi | 87% | 2749 fps | 99.3% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 51,517 psi | 86% | 2858 fps | 96.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 42,960 psi | 71% | 2713 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 96% | 51,866 psi | 86% | 2733 fps | 99.6% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 50,763 psi | 84% | 2723 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 86% | 51,924 psi | 86% | 2749 fps | 99.3% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 53,243 psi | 88% | 2812 fps | 99.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 47,892 psi | 80% | 2700 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 52,750 psi | 88% | 2717 fps | 98% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 53,301 psi | 89% | 2431 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 51,401 psi | 85% | 2753 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 54,302 psi | 90% | 2753 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 53,853 psi | 89% | 2799 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 54,070 psi | 90% | 2703 fps | 99.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 46,325 psi | 77% | 2598 fps | 99.7% |
| Somchem S321 | <<locked>> | 94% | 52,895 psi | 88% | 2785 fps | 98.7% |
| Somchem S335 | <<locked>> | 98% | 52,402 psi | 87% | 2700 fps | 99.9% |
| Somchem S341 | <<locked>> | 98% | 52,750 psi | 88% | 2766 fps | 97% |
| Vihtavuori N120 | <<locked>> | 86% | 52,518 psi | 87% | 2621 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 53,896 psi | 90% | 2690 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 53,374 psi | 89% | 2697 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 48,675 psi | 81% | 2713 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 50,952 psi | 85% | 2723 fps | 99.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 40,770 psi | 68% | 2569 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 96% | 52,431 psi | 87% | 2746 fps | 98.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 49,487 psi | 82% | 2720 fps | 99.5% |
| Winchester 748 | <<locked>> | 98% | 54,012 psi | 90% | 2841 fps | 99.2% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 52,866 psi | 88% | 2802 fps | 97.8% |
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% | 47,979 psi | 80% | 2575 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 32,213 psi | 54% | 2359 fps | 98.6% |
| Accurate 2200 | <<locked>> | 84% | 48,095 psi | 80% | 2694 fps | 95.3% |
| Accurate 2230 | <<locked>> | 84% | 47,950 psi | 80% | 2697 fps | 95.7% |
| Accurate 2460 | <<locked>> | 80% | 34,476 psi | 57% | 2428 fps | 96.5% |
| Accurate 2495 | <<locked>> | 80% | 24,758 psi | 41% | 2234 fps | 96.5% |
| Accurate 2520 | <<locked>> | 82% | 32,155 psi | 53% | 2415 fps | 95.3% |
| Accurate 4064 | <<locked>> | 86% | 28,456 psi | 47% | 2349 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 40,857 psi | 68% | 2457 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 80% | 41,234 psi | 69% | 2467 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 92% | 43,221 psi | 72% | 2628 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 43,729 psi | 73% | 2546 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 38,754 psi | 64% | 2539 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 37,956 psi | 63% | 2497 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 29,530 psi | 49% | 2375 fps | 99.7% |
| Alliant Power Pro 1200-R | 37.3 gr | 84% | 40,350 psi | 67% | 2625 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 39,204 psi | 65% | 2579 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,898 psi | 61% | 2467 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 98% | 45,803 psi | 76% | 2697 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 45,034 psi | 75% | 2556 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 39,160 psi | 65% | 2444 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 48,443 psi | 80% | 2726 fps | 95% |
| Bofors RP3 | <<locked>> | 96% | 38,508 psi | 64% | 2579 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 36,085 psi | 60% | 2411 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 86% | 35,230 psi | 59% | 2500 fps | 95% |
| Hodgdon CFE223 | <<locked>> | 92% | 48,008 psi | 80% | 2785 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 35,491 psi | 59% | 2470 fps | 98.1% |
| Hodgdon H335 | <<locked>> | 80% | 35,911 psi | 60% | 2480 fps | 97.2% |
| Hodgdon H4198 | <<locked>> | 80% | 45,020 psi | 75% | 2546 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 90% | 40,770 psi | 68% | 2589 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 41,423 psi | 69% | 2644 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,584 psi | 41% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 42,119 psi | 70% | 2592 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 28,123 psi | 47% | 2343 fps | 96.4% |
| IMR 4064 | <<locked>> | 98% | 46,064 psi | 77% | 2648 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 38,464 psi | 64% | 2457 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 50,821 psi | 84% | 2589 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 43,888 psi | 73% | 2677 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 86% | 37,956 psi | 63% | 2497 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 42,250 psi | 70% | 2589 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 80% | 34,171 psi | 57% | 2421 fps | 95% |
| Lovex D073.6 | <<locked>> | 86% | 33,112 psi | 55% | 2448 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 50,024 psi | 83% | 2539 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 44,585 psi | 74% | 2572 fps | 95.4% |
| Lovex S062 | <<locked>> | 92% | 37,347 psi | 62% | 2503 fps | 95% |
| Norma 200 | <<locked>> | 80% | 41,916 psi | 70% | 2543 fps | 100% |
| Norma 201 | <<locked>> | 90% | 39,537 psi | 66% | 2533 fps | 95.7% |
| Norma 202 | <<locked>> | 82% | 30,516 psi | 51% | 2356 fps | 95.4% |
| Norma 203B | <<locked>> | 98% | 44,904 psi | 75% | 2684 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 98% | 45,658 psi | 76% | 2703 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 92% | 44,773 psi | 74% | 2664 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 88% | 44,425 psi | 74% | 2595 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,497 psi | 41% | 1503 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 51,126 psi | 85% | 2628 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,259 psi | 59% | 2441 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 47,906 psi | 80% | 2795 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 37,637 psi | 63% | 2595 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 32,198 psi | 53% | 2356 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 92% | 39,842 psi | 66% | 2530 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 42,250 psi | 70% | 2589 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 33,112 psi | 55% | 2448 fps | 95.6% |
| Shooters World Precision | <<locked>> | 92% | 37,347 psi | 62% | 2503 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 40,103 psi | 67% | 2500 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,876 psi | 76% | 2333 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 39,378 psi | 65% | 2543 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,492 psi | 62% | 2474 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 44,280 psi | 74% | 2641 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,995 psi | 51% | 2283 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 28,369 psi | 47% | 2238 fps | 95.6% |
| Somchem S321 | 40.1 gr | 84% | 37,710 psi | 63% | 2516 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 30,400 psi | 51% | 2290 fps | 96.3% |
| Somchem S341 | <<locked>> | 94% | 46,021 psi | 76% | 2661 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 43,758 psi | 73% | 2500 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 35,273 psi | 59% | 2385 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 30,734 psi | 51% | 2297 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 80% | 25,817 psi | 43% | 2247 fps | 96.7% |
| Vihtavuori N140 | <<locked>> | 82% | 28,892 psi | 48% | 2293 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 96% | 36,027 psi | 60% | 2474 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 86% | 37,797 psi | 63% | 2490 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 86% | 31,459 psi | 52% | 2375 fps | 95.5% |
| Winchester 748 | 40 gr | 86% | 36,289 psi | 60% | 2520 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 92% | 40,654 psi | 68% | 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 | Barnes RRLP. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,858 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,858 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 | Barnes RRLP 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.