Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 166gr | Hammer Stone Hammer 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, 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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 94% | 54,317 psi | 90% | 2621 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 52,301 psi | 87% | 2664 fps | 97.7% |
| Accurate 2230 | <<locked>> | 84% | 52,692 psi | 88% | 2671 fps | 98.1% |
| Accurate 2460 | <<locked>> | 90% | 52,895 psi | 88% | 2644 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 53,243 psi | 88% | 2667 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 53,998 psi | 90% | 2697 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 49,356 psi | 82% | 2654 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 52,895 psi | 88% | 2543 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 53,345 psi | 89% | 2562 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 96% | 53,505 psi | 89% | 2697 fps | 98.6% |
| ADI AR 2207 | <<locked>> | 84% | 53,577 psi | 89% | 2562 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 51,300 psi | 85% | 2641 fps | 97.6% |
| ADI AR 2219 | <<locked>> | 86% | 52,098 psi | 87% | 2651 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 53,272 psi | 89% | 2664 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 94% | 51,692 psi | 86% | 2654 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 54,462 psi | 90% | 2762 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 53,026 psi | 88% | 2785 fps | 97.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 49,545 psi | 82% | 2657 fps | 98.8% |
| Alliant Reloder-10x | <<locked>> | 88% | 51,576 psi | 86% | 2598 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 53,896 psi | 90% | 2723 fps | 98.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 44,063 psi | 73% | 2638 fps | 97.2% |
| Alliant Reloder-7 | <<locked>> | 82% | 51,547 psi | 86% | 2539 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 51,430 psi | 85% | 2539 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 53,084 psi | 88% | 2703 fps | 97.6% |
| Bofors RP3ᴾ | <<locked>> | 100% | 49,139 psi | 82% | 2664 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 52,518 psi | 87% | 2608 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 94% | 51,213 psi | 85% | 2687 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 92% | 53,316 psi | 89% | 2772 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 90% | 54,012 psi | 90% | 2674 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 51,634 psi | 86% | 2651 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 51,488 psi | 86% | 2674 fps | 96.6% |
| Hodgdon H4198 | <<locked>> | 82% | 51,503 psi | 86% | 2543 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 53,911 psi | 90% | 2710 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 51,996 psi | 86% | 2730 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,547 psi | 56% | 1578 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 52,533 psi | 87% | 2667 fps | 98.8% |
| IMR 3031 | <<locked>> | 96% | 52,170 psi | 87% | 2703 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 54,012 psi | 90% | 2671 fps | 98.3% |
| IMR 4198 | <<locked>> | 88% | 52,678 psi | 88% | 2562 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 51,808 psi | 86% | 2707 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 94% | 53,272 psi | 89% | 2664 fps | 99.4% |
| Lovex D073.4 | <<locked>> | 84% | 53,403 psi | 89% | 2657 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 90% | 53,142 psi | 88% | 2654 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 96% | 51,474 psi | 86% | 2674 fps | 99.9% |
| Lovex S060 | <<locked>> | 94% | 51,343 psi | 85% | 2589 fps | 98.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 52,779 psi | 88% | 2671 fps | 99.4% |
| Norma 200 | <<locked>> | 84% | 51,343 psi | 85% | 2572 fps | 100% |
| Norma 201 | <<locked>> | 96% | 51,866 psi | 86% | 2644 fps | 99.3% |
| Norma 202 | <<locked>> | 96% | 52,388 psi | 87% | 2661 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 52,881 psi | 88% | 2713 fps | 98.6% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 53,650 psi | 89% | 2736 fps | 98.5% |
| Ramshot TAC | <<locked>> | 94% | 54,346 psi | 90% | 2674 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 94% | 52,504 psi | 87% | 2687 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 90% | 51,503 psi | 86% | 2615 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,634 psi | 56% | 1617 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 53,374 psi | 89% | 2657 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 53,621 psi | 89% | 2785 fps | 98.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 47,195 psi | 78% | 2710 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 94% | 52,823 psi | 88% | 2638 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 52,214 psi | 87% | 2641 fps | 99.3% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 45,527 psi | 76% | 2598 fps | 98% |
| Shooters World AR Plus | <<locked>> | 84% | 53,403 psi | 89% | 2657 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 96% | 51,474 psi | 86% | 2674 fps | 99.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 52,779 psi | 88% | 2671 fps | 99.4% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 53,751 psi | 89% | 2628 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 53,780 psi | 89% | 2323 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 52,446 psi | 87% | 2657 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 48,124 psi | 80% | 2661 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 52,779 psi | 88% | 2615 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 51,416 psi | 85% | 2638 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 51,808 psi | 86% | 2667 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 51,982 psi | 86% | 2569 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 50,647 psi | 84% | 2556 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 50,894 psi | 85% | 2651 fps | 99.3% |
| Somchem S335 | <<locked>> | 96% | 53,432 psi | 89% | 2605 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 54,418 psi | 90% | 2687 fps | 98.6% |
| Somchem S355ᴾ | <<locked>> | 100% | 46,818 psi | 78% | 2605 fps | 98% |
| Vihtavuori N120 | <<locked>> | 84% | 53,534 psi | 89% | 2516 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 51,692 psi | 86% | 2546 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 51,706 psi | 86% | 2562 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 53,838 psi | 89% | 2664 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 52,721 psi | 88% | 2638 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,165 psi | 75% | 2549 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 94% | 54,012 psi | 90% | 2664 fps | 99.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 54,360 psi | 90% | 2680 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,684 psi | 69% | 2484 fps | 96.5% |
| Winchester 748 | <<locked>> | 94% | 52,243 psi | 87% | 2703 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 96% | 51,285 psi | 85% | 2677 fps | 98.8% |
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 2015 | <<locked>> | 80% | 34,911 psi | 58% | 2316 fps | 99.8% |
| Accurate 2200 | <<locked>> | 80% | 45,614 psi | 76% | 2552 fps | 96.4% |
| Accurate 2230 | <<locked>> | 80% | 45,527 psi | 76% | 2559 fps | 96.8% |
| Accurate 2460 | <<locked>> | 80% | 37,521 psi | 62% | 2398 fps | 98.6% |
| Accurate 2495 | <<locked>> | 80% | 26,963 psi | 45% | 2205 fps | 98.6% |
| Accurate 2520 | <<locked>> | 80% | 33,098 psi | 55% | 2343 fps | 97.2% |
| Accurate 4064 | <<locked>> | 80% | 25,599 psi | 43% | 2178 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 43,801 psi | 73% | 2408 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 44,164 psi | 73% | 2421 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 38,885 psi | 65% | 2448 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 47,369 psi | 79% | 2480 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 42,511 psi | 71% | 2497 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 42,496 psi | 71% | 2503 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,098 psi | 57% | 2320 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 32,213 psi | 54% | 2339 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 38,899 psi | 65% | 2493 fps | 96.4% |
| Alliant Power Pro 2000-MR | 44.8 gr | 92% | 43,323 psi | 72% | 2615 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 33,620 psi | 56% | 2362 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,045 psi | 67% | 2421 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 39,247 psi | 65% | 2477 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 96% | 38,392 psi | 64% | 2520 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 48,356 psi | 80% | 2493 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,511 psi | 71% | 2408 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 43,526 psi | 72% | 2549 fps | 95.5% |
| Bofors RP3 | <<locked>> | 90% | 34,925 psi | 58% | 2408 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,361 psi | 60% | 2329 fps | 96.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,546 psi | 52% | 2320 fps | 95.3% |
| Hodgdon CFE223 | 41.9 gr | 84% | 40,335 psi | 67% | 2546 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 38,609 psi | 64% | 2431 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 80% | 39,233 psi | 65% | 2451 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 96% | 45,194 psi | 75% | 2572 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 48,327 psi | 80% | 2497 fps | 100% |
| Hodgdon H4895 | <<locked>> | 84% | 36,695 psi | 61% | 2408 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 35,012 psi | 58% | 2418 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,685 psi | 41% | 1407 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 35,708 psi | 59% | 2369 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 30,850 psi | 51% | 2323 fps | 98.8% |
| IMR 4064 | <<locked>> | 90% | 39,262 psi | 65% | 2428 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 41,452 psi | 69% | 2402 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 37,405 psi | 62% | 2454 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 34,098 psi | 57% | 2320 fps | 95.4% |
| Lovex D073.4 | <<locked>> | 80% | 46,137 psi | 77% | 2552 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 37,188 psi | 62% | 2392 fps | 97.5% |
| Lovex D073.6 | <<locked>> | 80% | 29,617 psi | 49% | 2274 fps | 95.9% |
| Lovex S060 | <<locked>> | 84% | 38,014 psi | 63% | 2356 fps | 95.3% |
| Lovex S062 | <<locked>> | 86% | 34,040 psi | 57% | 2339 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 45,179 psi | 75% | 2484 fps | 100% |
| Norma 201 | <<locked>> | 82% | 33,431 psi | 56% | 2310 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 31,256 psi | 52% | 2283 fps | 97.3% |
| Norma 203B | <<locked>> | 90% | 38,464 psi | 64% | 2464 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 92% | 40,973 psi | 68% | 2526 fps | 95.8% |
| Ramshot TAC | <<locked>> | 92% | 50,792 psi | 84% | 2618 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 37,362 psi | 62% | 2425 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 82% | 39,653 psi | 66% | 2415 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,889 psi | 41% | 1447 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,363 psi | 64% | 2411 fps | 98.2% |
| ReloadSwiss RS 52 | 42.5 gr | 90% | 40,669 psi | 68% | 2566 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 31,662 psi | 53% | 2369 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 34,722 psi | 58% | 2323 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 33,692 psi | 56% | 2310 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 92% | 34,853 psi | 58% | 2398 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 46,137 psi | 77% | 2552 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,617 psi | 49% | 2274 fps | 95.9% |
| Shooters World Precision | <<locked>> | 86% | 34,040 psi | 57% | 2339 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,756 psi | 68% | 2425 fps | 97.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 48,414 psi | 80% | 2257 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,888 psi | 71% | 2507 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 39,711 psi | 66% | 2510 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,857 psi | 68% | 2434 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 47,877 psi | 80% | 2582 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 37,463 psi | 62% | 2418 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,388 psi | 55% | 2251 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,977 psi | 45% | 2119 fps | 96.7% |
| Somchem S321 | <<locked>> | 80% | 36,158 psi | 60% | 2392 fps | 96.6% |
| Somchem S335 | <<locked>> | 80% | 32,706 psi | 54% | 2254 fps | 98.4% |
| Somchem S341 | <<locked>> | 86% | 38,580 psi | 64% | 2431 fps | 95.3% |
| Somchem S355 | <<locked>> | 92% | 36,448 psi | 61% | 2415 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 47,413 psi | 79% | 2438 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,130 psi | 63% | 2339 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,344 psi | 55% | 2260 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 80% | 28,224 psi | 47% | 2221 fps | 98.8% |
| Vihtavuori N140 | <<locked>> | 80% | 29,530 psi | 49% | 2224 fps | 97% |
| Vihtavuori N150 | <<locked>> | 90% | 32,518 psi | 54% | 2310 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 33,794 psi | 56% | 2313 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 28,268 psi | 47% | 2205 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 38,986 psi | 65% | 2431 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 32,460 psi | 54% | 2343 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 86% | 36,579 psi | 61% | 2421 fps | 95.6% |
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 | 166gr | Hammer Stone Hammer. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,785 fps; across all powders the maximum-charge window runs from 1,578 fps to 2,785 fps. Accurate 2495 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 56–90 %, leaving at least 10 % headroom. The 166.0 gr projectile in 0.308" calls for a 1:12.5 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 2000-MR, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .308 Win. Ackley Improved with the .308 | 166gr | Hammer Stone Hammer 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.