Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 165gr | Barnes X BT bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Hodgdon CFE223 and ReloadSwiss RS 52.
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 2015 | <<locked>> | 90% | 52,069 psi | 87% | 2566 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 52,228 psi | 87% | 2635 fps | 97.4% |
| Accurate 2230 | <<locked>> | 82% | 52,721 psi | 88% | 2641 fps | 97.9% |
| Accurate 2460 | <<locked>> | 88% | 54,099 psi | 90% | 2631 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 52,649 psi | 87% | 2628 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 51,256 psi | 85% | 2635 fps | 99.8% |
| Accurate 4064 | <<locked>> | 98% | 51,779 psi | 86% | 2654 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 52,330 psi | 87% | 2513 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 52,721 psi | 88% | 2530 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 94% | 53,795 psi | 89% | 2674 fps | 98.5% |
| ADI AR 2207 | <<locked>> | 82% | 53,954 psi | 90% | 2543 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,375 psi | 90% | 2664 fps | 97.9% |
| ADI AR 2219 | <<locked>> | 84% | 51,779 psi | 86% | 2621 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 53,258 psi | 88% | 2638 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 92% | 51,764 psi | 86% | 2631 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 51,227 psi | 85% | 2687 fps | 98.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 52,678 psi | 88% | 2756 fps | 97.4% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,272 psi | 89% | 2687 fps | 99.1% |
| Alliant Reloder-10x | <<locked>> | 86% | 52,156 psi | 87% | 2579 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 54,302 psi | 90% | 2703 fps | 98.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,268 psi | 79% | 2671 fps | 97.7% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,157 psi | 90% | 2552 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 52,837 psi | 88% | 2677 fps | 97.3% |
| Bofors RP3ᴾ | <<locked>> | 100% | 53,577 psi | 89% | 2700 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 90% | 52,736 psi | 88% | 2585 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 92% | 51,547 psi | 86% | 2667 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 90% | 52,678 psi | 88% | 2736 fps | 97.9% |
| Hodgdon H322 | <<locked>> | 88% | 53,621 psi | 89% | 2648 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 51,445 psi | 85% | 2625 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 51,895 psi | 86% | 2651 fps | 96.4% |
| Hodgdon H4198 | <<locked>> | 82% | 54,012 psi | 90% | 2552 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 54,128 psi | 90% | 2687 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 51,924 psi | 86% | 2707 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,679 psi | 58% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 52,315 psi | 87% | 2641 fps | 98.6% |
| IMR 3031 | <<locked>> | 94% | 52,692 psi | 88% | 2684 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 53,911 psi | 90% | 2648 fps | 98% |
| IMR 4198 | <<locked>> | 86% | 52,388 psi | 87% | 2539 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 52,243 psi | 87% | 2687 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 92% | 53,258 psi | 88% | 2638 fps | 99.2% |
| Lovex D073.4 | <<locked>> | 82% | 53,621 psi | 89% | 2631 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 88% | 53,969 psi | 90% | 2638 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 94% | 52,533 psi | 87% | 2661 fps | 99.9% |
| Lovex S060 | <<locked>> | 94% | 54,259 psi | 90% | 2608 fps | 98.5% |
| Lovex S062 | <<locked>> | 98% | 53,461 psi | 89% | 2654 fps | 99.3% |
| Norma 200 | <<locked>> | 82% | 52,895 psi | 88% | 2559 fps | 100% |
| Norma 201 | <<locked>> | 94% | 53,185 psi | 88% | 2635 fps | 99.3% |
| Norma 202 | <<locked>> | 94% | 52,736 psi | 88% | 2641 fps | 100% |
| Norma 203B | <<locked>> | 98% | 53,316 psi | 89% | 2694 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 98% | 53,548 psi | 89% | 2710 fps | 98.3% |
| Ramshot TAC | <<locked>> | 92% | 53,838 psi | 89% | 2641 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 92% | 52,330 psi | 87% | 2661 fps | 98.2% |
| Ramshot X-Terminator | <<locked>> | 88% | 51,779 psi | 86% | 2595 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,012 psi | 58% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 53,301 psi | 89% | 2631 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 53,417 psi | 89% | 2759 fps | 98% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,386 psi | 84% | 2740 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 90% | 52,025 psi | 86% | 2592 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 96% | 53,127 psi | 88% | 2625 fps | 99.2% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,893 psi | 83% | 2638 fps | 98.5% |
| Shooters World AR Plus | <<locked>> | 82% | 53,621 psi | 89% | 2631 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 94% | 52,533 psi | 87% | 2661 fps | 99.9% |
| Shooters World Precision | <<locked>> | 98% | 53,461 psi | 89% | 2654 fps | 99.3% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 53,345 psi | 89% | 2598 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 53,867 psi | 89% | 2300 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 52,576 psi | 87% | 2631 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 51,692 psi | 86% | 2690 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 52,605 psi | 87% | 2589 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 51,851 psi | 86% | 2615 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 52,069 psi | 87% | 2648 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 51,938 psi | 86% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 53,780 psi | 89% | 2575 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 51,140 psi | 85% | 2628 fps | 99.2% |
| Somchem S335 | <<locked>> | 94% | 54,288 psi | 90% | 2589 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 54,244 psi | 90% | 2661 fps | 98.4% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,807 psi | 84% | 2638 fps | 98.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,956 psi | 61% | 2470 fps | 96.3% |
| Vihtavuori N120 | <<locked>> | 82% | 53,722 psi | 89% | 2493 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 51,982 psi | 86% | 2526 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 51,488 psi | 86% | 2536 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 51,300 psi | 85% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 52,895 psi | 88% | 2618 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,921 psi | 81% | 2579 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 92% | 53,592 psi | 89% | 2635 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 98% | 54,331 psi | 90% | 2657 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,860 psi | 75% | 2513 fps | 97% |
| Winchester 748 | <<locked>> | 92% | 52,054 psi | 86% | 2680 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 96% | 54,447 psi | 90% | 2700 fps | 99% |
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 2015 | <<locked>> | 80% | 39,073 psi | 65% | 2359 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 48,762 psi | 81% | 2579 fps | 96.8% |
| Accurate 2230 | <<locked>> | 80% | 49,530 psi | 82% | 2595 fps | 97.3% |
| Accurate 2460 | <<locked>> | 80% | 42,148 psi | 70% | 2444 fps | 99.2% |
| Accurate 2495 | <<locked>> | 80% | 32,547 psi | 54% | 2287 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 37,173 psi | 62% | 2392 fps | 98% |
| Accurate 4064 | <<locked>> | 80% | 30,777 psi | 51% | 2264 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 80% | 46,775 psi | 78% | 2431 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,079 psi | 78% | 2444 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 40,147 psi | 67% | 2441 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 50,691 psi | 84% | 2500 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 43,192 psi | 72% | 2480 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 45,788 psi | 76% | 2530 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,434 psi | 62% | 2359 fps | 96.2% |
| Alliant AR-Comp | <<locked>> | 80% | 35,795 psi | 59% | 2379 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,612 psi | 71% | 2536 fps | 97.1% |
| Alliant Power Pro 2000-MR | 44.1 gr | 92% | 46,456 psi | 77% | 2644 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,230 psi | 59% | 2365 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,063 psi | 73% | 2457 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 40,350 psi | 67% | 2464 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 94% | 39,494 psi | 66% | 2516 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,179 psi | 75% | 2425 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 43,903 psi | 73% | 2530 fps | 95.3% |
| Bofors RP3 | <<locked>> | 86% | 34,722 psi | 58% | 2365 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,523 psi | 66% | 2359 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,186 psi | 58% | 2369 fps | 96.3% |
| Hodgdon CFE223 | 40.2 gr | 82% | 40,901 psi | 68% | 2526 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 42,192 psi | 70% | 2467 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 42,757 psi | 71% | 2487 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 94% | 45,905 psi | 76% | 2556 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 51,213 psi | 85% | 2513 fps | 100% |
| Hodgdon H4895 | <<locked>> | 82% | 38,101 psi | 63% | 2405 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 36,187 psi | 60% | 2411 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,759 psi | 43% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,695 psi | 61% | 2359 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 34,418 psi | 57% | 2372 fps | 99.3% |
| IMR 4064 | <<locked>> | 88% | 40,292 psi | 67% | 2418 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 44,338 psi | 74% | 2421 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 38,885 psi | 65% | 2451 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 37,434 psi | 62% | 2359 fps | 96.2% |
| Lovex D073.4 | <<locked>> | 80% | 50,415 psi | 84% | 2589 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 41,785 psi | 69% | 2441 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 33,866 psi | 56% | 2333 fps | 97.1% |
| Lovex S060 | <<locked>> | 82% | 38,798 psi | 64% | 2343 fps | 95.2% |
| Lovex S062 | <<locked>> | 82% | 33,852 psi | 56% | 2297 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 49,792 psi | 83% | 2516 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,491 psi | 59% | 2316 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 34,983 psi | 58% | 2329 fps | 98.1% |
| Norma 203B | <<locked>> | 88% | 39,653 psi | 66% | 2457 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 90% | 41,640 psi | 69% | 2510 fps | 95.7% |
| Ramshot TAC | <<locked>> | 90% | 50,763 psi | 84% | 2595 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 38,406 psi | 64% | 2415 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,437 psi | 67% | 2398 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 43% | 1447 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,771 psi | 69% | 2444 fps | 98.6% |
| ReloadSwiss RS 52 | 40.9 gr | 88% | 41,582 psi | 69% | 2552 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 33,025 psi | 55% | 2372 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 39,508 psi | 66% | 2375 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 33,910 psi | 56% | 2274 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 90% | 37,028 psi | 62% | 2408 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 50,415 psi | 84% | 2589 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,866 psi | 56% | 2333 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 33,852 psi | 56% | 2297 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,903 psi | 73% | 2451 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,053 psi | 85% | 2267 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,427 psi | 77% | 2539 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 40,451 psi | 67% | 2493 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,976 psi | 73% | 2457 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 48,443 psi | 80% | 2562 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 38,435 psi | 64% | 2405 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,782 psi | 61% | 2287 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,139 psi | 50% | 2162 fps | 97.6% |
| Somchem S321 | <<locked>> | 80% | 39,682 psi | 66% | 2428 fps | 97.2% |
| Somchem S335 | <<locked>> | 80% | 36,492 psi | 61% | 2297 fps | 99% |
| Somchem S341 | <<locked>> | 84% | 39,566 psi | 66% | 2418 fps | 95.2% |
| Somchem S355 | <<locked>> | 90% | 38,000 psi | 63% | 2411 fps | 95.6% |
| Somchem S365 | <<locked>> | 98% | 35,114 psi | 58% | 2428 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 50,531 psi | 84% | 2451 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,466 psi | 69% | 2365 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,535 psi | 61% | 2293 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 32,024 psi | 53% | 2270 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 33,011 psi | 55% | 2270 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 86% | 32,271 psi | 54% | 2267 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 37,275 psi | 62% | 2356 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 80% | 31,879 psi | 53% | 2257 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 39,813 psi | 66% | 2418 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 35,911 psi | 60% | 2388 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 37,449 psi | 62% | 2405 fps | 95.5% |
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 88 powders for .308 Win. Ackley Improved loaded with the .308 | 165gr | Barnes X BT. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,759 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,759 fps. ADI AR 2208 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2208, Alliant Reloder- TS 15.5, Alliant Reloder-17 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 2000-MR, Hodgdon CFE223, ReloadSwiss RS 52 rank at the top here: for .308 Win. Ackley Improved with the .308 | 165gr | Barnes X BT 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.