Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 170gr | Swift A-Frame 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% | 53,824 psi | 89% | 2605 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,070 psi | 90% | 2690 fps | 98.6% |
| Accurate 2460 | <<locked>> | 86% | 52,359 psi | 87% | 2628 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 54,244 psi | 90% | 2664 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,447 psi | 89% | 2680 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 53,563 psi | 89% | 2697 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,627 psi | 71% | 2589 fps | 96.1% |
| Accurate LT-30 | <<locked>> | 84% | 54,302 psi | 90% | 2559 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 51,329 psi | 85% | 2533 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 52,750 psi | 88% | 2684 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 98% | 53,853 psi | 89% | 2680 fps | 98.7% |
| ADI AR 2219 | <<locked>> | 84% | 54,273 psi | 90% | 2671 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,156 psi | 87% | 2644 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 90% | 51,488 psi | 86% | 2635 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,664 psi | 89% | 2746 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 51,996 psi | 86% | 2776 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 52,692 psi | 88% | 2697 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,983 psi | 90% | 2615 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,708 psi | 89% | 2717 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,395 psi | 72% | 2598 fps | 96.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,908 psi | 83% | 2749 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 53,055 psi | 88% | 2556 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 52,504 psi | 87% | 2697 fps | 98.3% |
| Bofors RP3 | <<locked>> | 98% | 52,837 psi | 88% | 2710 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 51,474 psi | 86% | 2589 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,346 psi | 90% | 2723 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 52,431 psi | 87% | 2756 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 86% | 52,837 psi | 88% | 2651 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,099 psi | 90% | 2677 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 51,155 psi | 85% | 2667 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 92% | 53,185 psi | 88% | 2697 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,566 psi | 66% | 2493 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 51,677 psi | 86% | 2723 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,316 psi | 57% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 51,517 psi | 86% | 2651 fps | 99.2% |
| IMR 3031 | <<locked>> | 92% | 52,156 psi | 87% | 2687 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,185 psi | 88% | 2661 fps | 98.8% |
| IMR 4198 | <<locked>> | 86% | 54,418 psi | 90% | 2575 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 51,561 psi | 86% | 2700 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 90% | 52,156 psi | 87% | 2644 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 86% | 52,446 psi | 87% | 2638 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 92% | 51,503 psi | 86% | 2667 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 53,447 psi | 89% | 2621 fps | 99.1% |
| Lovex S062 | <<locked>> | 96% | 52,446 psi | 87% | 2661 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,457 psi | 81% | 2595 fps | 95.9% |
| Norma 200 | <<locked>> | 82% | 53,751 psi | 89% | 2589 fps | 100% |
| Norma 201 | <<locked>> | 92% | 51,503 psi | 86% | 2635 fps | 99.6% |
| Norma 202 | <<locked>> | 92% | 51,895 psi | 86% | 2648 fps | 100% |
| Norma 203B | <<locked>> | 96% | 52,750 psi | 88% | 2707 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 43,018 psi | 71% | 2585 fps | 96% |
| Ramshot Big Game | <<locked>> | 96% | 53,185 psi | 88% | 2733 fps | 99.1% |
| Ramshot TAC | <<locked>> | 90% | 52,837 psi | 88% | 2654 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 90% | 51,793 psi | 86% | 2674 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,795 psi | 89% | 2651 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,519 psi | 57% | 1634 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 52,112 psi | 87% | 2635 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 52,054 psi | 86% | 2648 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 53,156 psi | 88% | 2776 fps | 98.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 53,316 psi | 89% | 2812 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 52,750 psi | 88% | 2628 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 52,141 psi | 87% | 2635 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,402 psi | 87% | 2697 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,457 psi | 81% | 2595 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 51,503 psi | 86% | 2667 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 52,446 psi | 87% | 2661 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 52,083 psi | 87% | 2605 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 51,387 psi | 85% | 2635 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 50,937 psi | 85% | 2707 fps | 98.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 51,764 psi | 86% | 2592 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,186 psi | 90% | 2680 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 51,242 psi | 85% | 2657 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,114 psi | 90% | 2592 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,447 psi | 89% | 2589 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,200 psi | 88% | 2677 fps | 99.8% |
| Somchem S335 | <<locked>> | 92% | 52,779 psi | 88% | 2589 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,693 psi | 89% | 2677 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,345 psi | 89% | 2697 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,348 psi | 64% | 2536 fps | 98.1% |
| Vihtavuori N130 | <<locked>> | 88% | 53,925 psi | 90% | 2566 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,925 psi | 90% | 2582 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 53,954 psi | 90% | 2651 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 52,286 psi | 87% | 2625 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,416 psi | 85% | 2635 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,643 psi | 76% | 2592 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 90% | 52,707 psi | 88% | 2644 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 96% | 53,809 psi | 89% | 2667 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,324 psi | 74% | 2592 fps | 96.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,934 psi | 78% | 2582 fps | 98.6% |
| Winchester 748 | <<locked>> | 90% | 51,619 psi | 86% | 2687 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 94% | 54,085 psi | 90% | 2713 fps | 99.5% |
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% | 39,508 psi | 66% | 2392 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,647 psi | 84% | 2638 fps | 98.2% |
| Accurate 2460 | <<locked>> | 80% | 42,859 psi | 71% | 2484 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 32,068 psi | 53% | 2303 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 38,174 psi | 63% | 2434 fps | 99% |
| Accurate 4064 | <<locked>> | 80% | 30,342 psi | 50% | 2280 fps | 98.1% |
| Accurate 4350 | <<locked>> | 98% | 39,668 psi | 66% | 2536 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 48,095 psi | 80% | 2474 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,472 psi | 81% | 2490 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 36,230 psi | 60% | 2385 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 86% | 37,231 psi | 62% | 2388 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 47,514 psi | 79% | 2575 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,174 psi | 63% | 2402 fps | 97.5% |
| Alliant AR-Comp | <<locked>> | 80% | 37,028 psi | 62% | 2415 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,932 psi | 73% | 2585 fps | 98.3% |
| Alliant Power Pro 2000-MR | 44.9 gr | 86% | 39,769 psi | 66% | 2546 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 31,850 psi | 53% | 2313 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,875 psi | 75% | 2487 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,709 psi | 61% | 2418 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 40,756 psi | 68% | 2543 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 35,853 psi | 60% | 2470 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,760 psi | 78% | 2467 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,030 psi | 67% | 2484 fps | 95.5% |
| Bofors RP3 | <<locked>> | 82% | 31,111 psi | 52% | 2310 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,350 psi | 67% | 2402 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,129 psi | 60% | 2411 fps | 97.6% |
| Hodgdon CFE223 | 42.8 gr | 80% | 39,755 psi | 66% | 2533 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 80% | 43,584 psi | 72% | 2510 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,077 psi | 73% | 2526 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 42,003 psi | 70% | 2513 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 36,434 psi | 61% | 2395 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 35,012 psi | 58% | 2395 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,605 psi | 54% | 2356 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,454 psi | 42% | 1427 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,244 psi | 59% | 2356 fps | 95.8% |
| IMR 3031 | <<locked>> | 80% | 35,172 psi | 58% | 2408 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 36,782 psi | 61% | 2375 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 45,774 psi | 76% | 2457 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 35,201 psi | 58% | 2395 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 38,174 psi | 63% | 2402 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 80% | 42,627 psi | 71% | 2484 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 80% | 34,301 psi | 57% | 2365 fps | 98.2% |
| Lovex S060 | <<locked>> | 80% | 37,376 psi | 62% | 2343 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 32,126 psi | 53% | 2287 fps | 95.8% |
| Lovex S065 | <<locked>> | 98% | 45,469 psi | 76% | 2546 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 50,705 psi | 84% | 2546 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,679 psi | 59% | 2349 fps | 97% |
| Norma 202 | <<locked>> | 80% | 35,578 psi | 59% | 2365 fps | 99% |
| Norma 203B | <<locked>> | 84% | 36,042 psi | 60% | 2408 fps | 95.6% |
| Norma URP | <<locked>> | 98% | 40,306 psi | 67% | 2533 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 84% | 35,679 psi | 59% | 2415 fps | 95% |
| Ramshot TAC | <<locked>> | 86% | 46,470 psi | 77% | 2549 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,028 psi | 62% | 2411 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,582 psi | 69% | 2448 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,759 psi | 43% | 1463 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,931 psi | 71% | 2487 fps | 99.4% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 48,849 psi | 81% | 2598 fps | 95.1% |
| ReloadSwiss RS 52 | 42.5 gr | 84% | 37,797 psi | 63% | 2503 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 29,588 psi | 49% | 2313 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 39,363 psi | 65% | 2405 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 33,866 psi | 56% | 2303 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 86% | 33,185 psi | 55% | 2349 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,469 psi | 76% | 2546 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,301 psi | 57% | 2365 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 32,126 psi | 53% | 2287 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,455 psi | 76% | 2503 fps | 98.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,921 psi | 80% | 2582 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,130 psi | 62% | 2454 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,571 psi | 76% | 2503 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 44,309 psi | 74% | 2523 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,824 psi | 58% | 2356 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,362 psi | 62% | 2326 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,545 psi | 51% | 2198 fps | 98.6% |
| Somchem S321 | <<locked>> | 80% | 40,799 psi | 68% | 2474 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 36,840 psi | 61% | 2329 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 35,621 psi | 59% | 2365 fps | 95.2% |
| Somchem S355 | <<locked>> | 86% | 34,534 psi | 57% | 2362 fps | 95.7% |
| Somchem S365 | <<locked>> | 94% | 31,850 psi | 53% | 2382 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 42,438 psi | 71% | 2402 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,376 psi | 62% | 2329 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,576 psi | 54% | 2303 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 33,591 psi | 56% | 2306 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 82% | 28,834 psi | 48% | 2211 fps | 95% |
| Vihtavuori N160 | <<locked>> | 96% | 40,074 psi | 67% | 2490 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 38,189 psi | 63% | 2398 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 80% | 32,300 psi | 54% | 2293 fps | 98.1% |
| Vihtavuori N550 | <<locked>> | 98% | 41,568 psi | 69% | 2539 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,172 psi | 60% | 2379 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 36,927 psi | 61% | 2434 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,953 psi | 56% | 2356 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 90 powders for .308 Win. Ackley Improved loaded with the .308 | 170gr | Swift A-Frame. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,812 fps; across all powders the maximum-charge window runs from 1,598 fps to 2,812 fps. Accurate 4350 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 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, 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, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .308 Win. Ackley Improved with the .308 | 170gr | Swift A-Frame 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.