Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 165gr | Barnes X FN bullet and 81 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, ReloadSwiss RS 52 and Hodgdon CFE223.
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% | 54,273 psi | 90% | 2615 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,128 psi | 90% | 2687 fps | 98.1% |
| Accurate 2460 | <<locked>> | 86% | 52,968 psi | 88% | 2635 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 52,098 psi | 87% | 2638 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,882 psi | 90% | 2687 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 54,462 psi | 90% | 2710 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 54,128 psi | 90% | 2559 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 51,532 psi | 86% | 2536 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 92% | 52,837 psi | 88% | 2684 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 98% | 53,447 psi | 89% | 2674 fps | 98.1% |
| ADI AR 2219 | <<locked>> | 84% | 54,056 psi | 90% | 2671 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,344 psi | 87% | 2648 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 90% | 51,285 psi | 85% | 2641 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,563 psi | 89% | 2743 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 51,880 psi | 86% | 2769 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 52,533 psi | 87% | 2697 fps | 99.2% |
| Alliant Reloder-10x | <<locked>> | 86% | 54,360 psi | 90% | 2625 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,563 psi | 89% | 2713 fps | 98.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,516 psi | 82% | 2736 fps | 98.5% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 53,113 psi | 88% | 2559 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 51,967 psi | 86% | 2687 fps | 97.5% |
| Bofors RP3 | <<locked>> | 98% | 53,171 psi | 88% | 2713 fps | 99.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 51,648 psi | 86% | 2592 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,244 psi | 90% | 2726 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 88% | 52,083 psi | 87% | 2753 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 86% | 52,982 psi | 88% | 2657 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,012 psi | 90% | 2680 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 51,329 psi | 85% | 2667 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 92% | 53,200 psi | 88% | 2697 fps | 99.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,074 psi | 67% | 2493 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,433 psi | 90% | 2766 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,896 psi | 58% | 1604 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,360 psi | 90% | 2694 fps | 99.1% |
| IMR 3031 | <<locked>> | 92% | 52,127 psi | 87% | 2694 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,214 psi | 88% | 2661 fps | 98.3% |
| IMR 4198 | <<locked>> | 86% | 54,215 psi | 90% | 2582 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 51,706 psi | 86% | 2700 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 90% | 52,344 psi | 87% | 2648 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 86% | 52,765 psi | 88% | 2641 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 92% | 51,648 psi | 86% | 2667 fps | 99.9% |
| Lovex S060 | <<locked>> | 92% | 53,301 psi | 89% | 2618 fps | 98.6% |
| Lovex S062 | <<locked>> | 96% | 52,794 psi | 88% | 2664 fps | 99.4% |
| Norma 201 | <<locked>> | 92% | 52,315 psi | 87% | 2641 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 51,953 psi | 86% | 2651 fps | 100% |
| Norma 203B | <<locked>> | 96% | 52,692 psi | 88% | 2707 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 96% | 52,823 psi | 88% | 2726 fps | 98.5% |
| Ramshot TAC | <<locked>> | 90% | 52,852 psi | 88% | 2651 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 90% | 51,619 psi | 86% | 2671 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,635 psi | 89% | 2648 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,201 psi | 58% | 1644 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 52,185 psi | 87% | 2638 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 52,692 psi | 88% | 2769 fps | 98.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,794 psi | 88% | 2805 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 54,157 psi | 90% | 2641 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 52,620 psi | 87% | 2638 fps | 99.4% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,721 psi | 88% | 2700 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 92% | 51,648 psi | 86% | 2667 fps | 99.9% |
| Shooters World Precision | <<locked>> | 96% | 52,794 psi | 88% | 2664 fps | 99.4% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 52,011 psi | 86% | 2602 fps | 99.1% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 51,532 psi | 86% | 2638 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,983 psi | 90% | 2749 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 51,663 psi | 86% | 2595 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,346 psi | 90% | 2677 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 54,317 psi | 90% | 2703 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,302 psi | 90% | 2595 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 52,924 psi | 88% | 2585 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,519 psi | 89% | 2684 fps | 99.6% |
| Somchem S335 | <<locked>> | 92% | 53,388 psi | 89% | 2598 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,272 psi | 89% | 2671 fps | 98.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,476 psi | 89% | 2700 fps | 99% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,740 psi | 64% | 2533 fps | 97.4% |
| Vihtavuori N130 | <<locked>> | 88% | 54,143 psi | 90% | 2572 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,882 psi | 90% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 54,157 psi | 90% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 52,272 psi | 87% | 2628 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,459 psi | 85% | 2638 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 90% | 52,692 psi | 88% | 2644 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 96% | 53,766 psi | 89% | 2671 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,905 psi | 78% | 2575 fps | 97.9% |
| Winchester 748 | <<locked>> | 90% | 51,517 psi | 86% | 2690 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,896 psi | 90% | 2713 fps | 99.2% |
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% | 40,712 psi | 68% | 2408 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,691 psi | 84% | 2635 fps | 97.5% |
| Accurate 2460 | <<locked>> | 80% | 44,121 psi | 73% | 2497 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 34,432 psi | 57% | 2339 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 39,044 psi | 65% | 2448 fps | 98.7% |
| Accurate 4064 | <<locked>> | 80% | 32,489 psi | 54% | 2320 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 80% | 48,269 psi | 80% | 2477 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,573 psi | 81% | 2490 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 80% | 37,289 psi | 62% | 2398 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 88% | 40,074 psi | 67% | 2441 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 47,703 psi | 79% | 2579 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,073 psi | 65% | 2415 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 80% | 37,492 psi | 62% | 2425 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,599 psi | 74% | 2592 fps | 97.8% |
| Alliant Power Pro 2000-MR | 44.1 gr | 88% | 42,743 psi | 71% | 2598 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 34,751 psi | 58% | 2372 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,643 psi | 76% | 2497 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 39,871 psi | 66% | 2474 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 38,682 psi | 64% | 2523 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,862 psi | 78% | 2470 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 43,178 psi | 72% | 2536 fps | 95.5% |
| Bofors RP3 | <<locked>> | 84% | 34,461 psi | 57% | 2375 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,089 psi | 68% | 2411 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,927 psi | 61% | 2425 fps | 97.2% |
| Hodgdon CFE223 | 41.1 gr | 80% | 40,234 psi | 67% | 2533 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 43,801 psi | 73% | 2513 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,672 psi | 74% | 2536 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 45,469 psi | 76% | 2569 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,463 psi | 62% | 2411 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 37,637 psi | 63% | 2441 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 35,476 psi | 59% | 2415 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 43% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,042 psi | 60% | 2365 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 35,984 psi | 60% | 2421 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 39,682 psi | 66% | 2425 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 45,977 psi | 76% | 2464 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 38,450 psi | 64% | 2461 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 39,073 psi | 65% | 2415 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 80% | 43,685 psi | 73% | 2497 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 35,563 psi | 59% | 2385 fps | 97.9% |
| Lovex S060 | <<locked>> | 80% | 38,159 psi | 63% | 2349 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 33,504 psi | 56% | 2306 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 37,159 psi | 62% | 2369 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 36,666 psi | 61% | 2382 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 37,028 psi | 62% | 2421 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 86% | 38,551 psi | 64% | 2467 fps | 95.1% |
| Ramshot TAC | <<locked>> | 88% | 49,705 psi | 83% | 2598 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,869 psi | 63% | 2425 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,105 psi | 70% | 2451 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 43% | 1463 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,482 psi | 72% | 2497 fps | 99.1% |
| ReloadSwiss RS 52 | 41.8 gr | 86% | 40,959 psi | 68% | 2562 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 32,474 psi | 54% | 2382 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 41,089 psi | 68% | 2425 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 80% | 35,317 psi | 59% | 2323 fps | 96% |
| Rottweil R 903 | <<locked>> | 86% | 34,592 psi | 57% | 2372 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,563 psi | 59% | 2385 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 33,504 psi | 56% | 2306 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,774 psi | 76% | 2503 fps | 98.2% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,428 psi | 80% | 2592 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,724 psi | 63% | 2457 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,861 psi | 76% | 2507 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 47,877 psi | 80% | 2575 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 37,942 psi | 63% | 2415 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,261 psi | 64% | 2336 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,488 psi | 52% | 2211 fps | 98.3% |
| Somchem S321 | <<locked>> | 80% | 41,524 psi | 69% | 2484 fps | 98% |
| Somchem S335 | <<locked>> | 80% | 38,072 psi | 63% | 2346 fps | 99.4% |
| Somchem S341 | <<locked>> | 82% | 38,885 psi | 65% | 2425 fps | 95.5% |
| Somchem S355 | <<locked>> | 86% | 35,505 psi | 59% | 2375 fps | 95.2% |
| Somchem S365 | <<locked>> | 94% | 32,721 psi | 54% | 2388 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 43,076 psi | 72% | 2411 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,087 psi | 63% | 2339 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,634 psi | 56% | 2323 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 34,592 psi | 57% | 2323 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 84% | 31,734 psi | 53% | 2274 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 38,885 psi | 65% | 2408 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 80% | 33,301 psi | 55% | 2306 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 38,885 psi | 65% | 2425 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 37,391 psi | 62% | 2441 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 36,912 psi | 61% | 2415 fps | 95.7% |
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 81 powders for .308 Win. Ackley Improved loaded with the .308 | 165gr | Barnes X FN. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,805 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,805 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 81 of the 81 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 1:14.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon Hybrid 100V, Hodgdon TrailBoss 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, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .308 Win. Ackley Improved with the .308 | 165gr | Barnes X FN 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.