Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 170gr | Speer Hot-Cor bullet and 90 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>> | 90% | 52,272 psi | 87% | 2572 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 52,866 psi | 88% | 2654 fps | 98.3% |
| Accurate 2230 | <<locked>> | 82% | 53,388 psi | 89% | 2664 fps | 98.7% |
| Accurate 2460 | <<locked>> | 88% | 54,099 psi | 90% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 51,967 psi | 86% | 2625 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 51,793 psi | 86% | 2644 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 51,808 psi | 86% | 2661 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 52,794 psi | 88% | 2526 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,214 psi | 88% | 2543 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 51,155 psi | 85% | 2644 fps | 98.7% |
| ADI AR 2207 | <<locked>> | 82% | 54,114 psi | 90% | 2543 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 52,069 psi | 87% | 2638 fps | 98.3% |
| ADI AR 2219 | <<locked>> | 84% | 52,663 psi | 87% | 2635 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 53,954 psi | 90% | 2654 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 92% | 53,055 psi | 88% | 2641 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 51,996 psi | 86% | 2703 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,896 psi | 90% | 2789 fps | 98.5% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 54,317 psi | 90% | 2707 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 86% | 52,533 psi | 87% | 2585 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 51,793 psi | 86% | 2674 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,211 psi | 80% | 2703 fps | 98.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 51,924 psi | 86% | 2526 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 54,215 psi | 90% | 2707 fps | 98.3% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,259 psi | 90% | 2717 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,142 psi | 88% | 2598 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 92% | 52,460 psi | 87% | 2684 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 90% | 53,998 psi | 90% | 2766 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 86% | 51,271 psi | 85% | 2615 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 52,431 psi | 87% | 2641 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 52,823 psi | 88% | 2677 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 92% | 51,547 psi | 86% | 2654 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,203 psi | 63% | 2448 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 53,258 psi | 88% | 2733 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,185 psi | 57% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,055 psi | 88% | 2657 fps | 99.3% |
| IMR 3031 | <<locked>> | 94% | 53,766 psi | 89% | 2697 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 51,677 psi | 86% | 2621 fps | 98.4% |
| IMR 4198 | <<locked>> | 86% | 53,287 psi | 89% | 2549 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 53,011 psi | 88% | 2707 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 92% | 53,954 psi | 90% | 2654 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 82% | 54,215 psi | 90% | 2648 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 54,215 psi | 90% | 2648 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 94% | 52,982 psi | 88% | 2674 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 51,880 psi | 86% | 2582 fps | 98.8% |
| Lovex S062 | <<locked>> | 98% | 53,969 psi | 90% | 2667 fps | 99.7% |
| Norma 200 | <<locked>> | 82% | 52,272 psi | 87% | 2556 fps | 100% |
| Norma 201 | <<locked>> | 94% | 53,214 psi | 88% | 2644 fps | 99.7% |
| Norma 202 | <<locked>> | 94% | 53,287 psi | 89% | 2651 fps | 100% |
| Norma 203B | <<locked>> | 98% | 54,360 psi | 90% | 2717 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 96% | 51,198 psi | 85% | 2687 fps | 98.6% |
| Ramshot TAC | <<locked>> | 90% | 51,271 psi | 85% | 2612 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 53,432 psi | 89% | 2684 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 88% | 52,054 psi | 86% | 2608 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,374 psi | 57% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 53,795 psi | 89% | 2644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 53,534 psi | 89% | 2654 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 51,082 psi | 85% | 2730 fps | 98.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,503 psi | 86% | 2769 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 54,273 psi | 90% | 2635 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 53,577 psi | 89% | 2641 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,502 psi | 84% | 2654 fps | 99.1% |
| Shooters World AR Plus | <<locked>> | 82% | 54,215 psi | 90% | 2648 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 52,982 psi | 88% | 2674 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 53,969 psi | 90% | 2667 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 53,954 psi | 90% | 2615 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,056 psi | 90% | 2303 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 53,330 psi | 89% | 2648 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,692 psi | 88% | 2717 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,505 psi | 89% | 2602 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 52,402 psi | 87% | 2638 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 52,794 psi | 88% | 2664 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 52,359 psi | 87% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 51,503 psi | 86% | 2549 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 51,706 psi | 86% | 2644 fps | 99.7% |
| Somchem S335 | <<locked>> | 92% | 51,503 psi | 86% | 2559 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 51,967 psi | 86% | 2638 fps | 98.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,488 psi | 86% | 2657 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,014 psi | 61% | 2493 fps | 97.5% |
| Vihtavuori N120 | <<locked>> | 82% | 54,041 psi | 90% | 2497 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 52,707 psi | 88% | 2539 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 52,141 psi | 87% | 2546 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 52,025 psi | 86% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 53,838 psi | 89% | 2631 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,676 psi | 83% | 2598 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 43,830 psi | 73% | 2543 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 90% | 51,068 psi | 85% | 2608 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 96% | 52,040 psi | 86% | 2631 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,223 psi | 75% | 2536 fps | 98.1% |
| Winchester 748 | <<locked>> | 92% | 53,476 psi | 89% | 2700 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 94% | 52,301 psi | 87% | 2674 fps | 99.3% |
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% | 38,479 psi | 64% | 2362 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,342 psi | 82% | 2598 fps | 97.7% |
| Accurate 2230 | <<locked>> | 80% | 49,821 psi | 83% | 2612 fps | 98.1% |
| Accurate 2460 | <<locked>> | 80% | 41,394 psi | 69% | 2444 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 30,850 psi | 51% | 2267 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 36,782 psi | 61% | 2395 fps | 98.6% |
| Accurate 4064 | <<locked>> | 80% | 29,225 psi | 49% | 2244 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 80% | 46,862 psi | 78% | 2441 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,239 psi | 78% | 2457 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 37,594 psi | 62% | 2402 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 50,923 psi | 85% | 2503 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 38,479 psi | 64% | 2402 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 46,282 psi | 77% | 2543 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,101 psi | 62% | 2365 fps | 97% |
| Alliant AR-Comp | <<locked>> | 80% | 35,679 psi | 59% | 2382 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,598 psi | 71% | 2546 fps | 97.9% |
| Alliant Power Pro 2000-MR | 44.6 gr | 88% | 41,379 psi | 69% | 2562 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,750 psi | 54% | 2323 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,729 psi | 73% | 2457 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 37,913 psi | 63% | 2428 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 37,101 psi | 62% | 2480 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,542 psi | 76% | 2434 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 41,553 psi | 69% | 2497 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 32,039 psi | 53% | 2320 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,276 psi | 65% | 2369 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,882 psi | 58% | 2375 fps | 97.1% |
| Hodgdon CFE223 | 41.5 gr | 80% | 38,537 psi | 64% | 2490 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 42,293 psi | 70% | 2477 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,714 psi | 71% | 2493 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 43,410 psi | 72% | 2523 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 35,375 psi | 59% | 2359 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,984 psi | 60% | 2402 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 33,649 psi | 56% | 2369 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,353 psi | 42% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,185 psi | 57% | 2320 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 33,910 psi | 56% | 2369 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 37,985 psi | 63% | 2385 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 44,556 psi | 74% | 2428 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 36,230 psi | 60% | 2408 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 37,101 psi | 62% | 2365 fps | 97% |
| Lovex D073.4 | <<locked>> | 80% | 50,256 psi | 83% | 2595 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 41,220 psi | 68% | 2448 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 33,199 psi | 55% | 2333 fps | 97.7% |
| Lovex S060 | <<locked>> | 80% | 36,332 psi | 60% | 2306 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 31,053 psi | 52% | 2247 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 49,269 psi | 82% | 2516 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,563 psi | 57% | 2313 fps | 96.4% |
| Norma 202 | <<locked>> | 80% | 34,447 psi | 57% | 2333 fps | 98.6% |
| Norma 203B | <<locked>> | 86% | 37,231 psi | 62% | 2421 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 86% | 36,753 psi | 61% | 2425 fps | 95.1% |
| Ramshot TAC | <<locked>> | 88% | 48,124 psi | 80% | 2562 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,853 psi | 60% | 2375 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,379 psi | 67% | 2411 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,628 psi | 43% | 1450 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,829 psi | 69% | 2457 fps | 99.1% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 50,459 psi | 84% | 2608 fps | 95.1% |
| ReloadSwiss RS 52 | 42.2 gr | 86% | 39,088 psi | 65% | 2516 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 30,603 psi | 51% | 2329 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 38,130 psi | 63% | 2369 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 80% | 32,967 psi | 55% | 2270 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 88% | 34,258 psi | 57% | 2362 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 50,256 psi | 83% | 2595 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,199 psi | 55% | 2333 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 31,053 psi | 52% | 2247 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,135 psi | 73% | 2464 fps | 98.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,242 psi | 85% | 2270 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,499 psi | 77% | 2546 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 38,261 psi | 64% | 2464 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,440 psi | 74% | 2470 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 45,847 psi | 76% | 2533 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,940 psi | 60% | 2365 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,448 psi | 61% | 2293 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,733 psi | 49% | 2169 fps | 98.2% |
| Somchem S321 | <<locked>> | 80% | 39,566 psi | 66% | 2438 fps | 98% |
| Somchem S335 | <<locked>> | 80% | 35,810 psi | 59% | 2297 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 36,869 psi | 61% | 2379 fps | 95.4% |
| Somchem S355 | <<locked>> | 88% | 35,447 psi | 59% | 2372 fps | 95.7% |
| Somchem S365 | <<locked>> | 96% | 32,677 psi | 54% | 2388 fps | 95.8% |
| Vihtavuori N120 | <<locked>> | 80% | 50,850 psi | 84% | 2457 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,437 psi | 69% | 2372 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,477 psi | 61% | 2300 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,575 psi | 52% | 2274 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 32,474 psi | 54% | 2270 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 84% | 29,733 psi | 49% | 2221 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 98% | 41,263 psi | 69% | 2497 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 36,854 psi | 61% | 2359 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 80% | 31,140 psi | 52% | 2254 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 35,085 psi | 58% | 2339 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 35,650 psi | 59% | 2395 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 35,085 psi | 58% | 2369 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 90 powders for .308 Win. Ackley Improved loaded with the .308 | 170gr | Speer Hot-Cor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,789 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,789 fps. Alliant Reloder- TS 15.5 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder- TS 15.5, Alliant Reloder-17, Bofors RP3 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 | 170gr | Speer Hot-Cor 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.