Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 170gr | Speer Deep Curl Flat Points bullet and 89 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% | 52,228 psi | 87% | 2572 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 52,446 psi | 87% | 2648 fps | 98.2% |
| Accurate 2230 | <<locked>> | 82% | 53,026 psi | 88% | 2657 fps | 98.6% |
| Accurate 2460 | <<locked>> | 88% | 54,114 psi | 90% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 51,953 psi | 86% | 2621 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 51,430 psi | 85% | 2638 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 51,474 psi | 86% | 2654 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 52,765 psi | 88% | 2523 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,214 psi | 88% | 2543 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 54,259 psi | 90% | 2690 fps | 99.1% |
| ADI AR 2207 | <<locked>> | 82% | 54,085 psi | 90% | 2543 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 51,750 psi | 86% | 2631 fps | 98.2% |
| ADI AR 2219 | <<locked>> | 84% | 52,692 psi | 88% | 2635 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 53,940 psi | 90% | 2654 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 92% | 52,692 psi | 88% | 2638 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 51,619 psi | 86% | 2697 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,606 psi | 89% | 2782 fps | 98.4% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,983 psi | 90% | 2700 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 86% | 52,156 psi | 87% | 2579 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 51,808 psi | 86% | 2674 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,921 psi | 80% | 2694 fps | 98.6% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 51,619 psi | 86% | 2520 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 53,925 psi | 90% | 2700 fps | 98.2% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,273 psi | 90% | 2717 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,156 psi | 88% | 2598 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 92% | 52,127 psi | 87% | 2677 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 90% | 54,099 psi | 90% | 2766 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 86% | 51,256 psi | 85% | 2615 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 52,112 psi | 87% | 2635 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 52,562 psi | 87% | 2671 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 92% | 51,547 psi | 86% | 2654 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,956 psi | 63% | 2441 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 52,982 psi | 88% | 2726 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,330 psi | 57% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,055 psi | 88% | 2657 fps | 99.2% |
| IMR 3031 | <<locked>> | 94% | 53,447 psi | 89% | 2694 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 51,372 psi | 85% | 2618 fps | 98.3% |
| IMR 4198 | <<locked>> | 86% | 52,866 psi | 88% | 2543 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 53,026 psi | 88% | 2703 fps | 99% |
| IMR 8208 XBR | <<locked>> | 92% | 53,940 psi | 90% | 2654 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 82% | 53,867 psi | 89% | 2644 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 53,896 psi | 90% | 2644 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 94% | 52,997 psi | 88% | 2671 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 51,866 psi | 86% | 2582 fps | 98.8% |
| Lovex S062 | <<locked>> | 98% | 53,664 psi | 89% | 2661 fps | 99.7% |
| Norma 200 | <<locked>> | 82% | 52,286 psi | 87% | 2556 fps | 100% |
| Norma 201 | <<locked>> | 94% | 52,881 psi | 88% | 2638 fps | 99.6% |
| Norma 202 | <<locked>> | 94% | 53,330 psi | 89% | 2651 fps | 100% |
| Norma 203B | <<locked>> | 98% | 54,041 psi | 90% | 2710 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 98% | 54,418 psi | 90% | 2733 fps | 99% |
| Ramshot TAC | <<locked>> | 90% | 51,300 psi | 85% | 2612 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 53,069 psi | 88% | 2677 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 88% | 52,069 psi | 87% | 2608 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,534 psi | 57% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 53,780 psi | 89% | 2644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 53,606 psi | 89% | 2654 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 54,447 psi | 90% | 2779 fps | 98.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,198 psi | 85% | 2762 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 54,273 psi | 90% | 2631 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 53,214 psi | 88% | 2635 fps | 99.6% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,125 psi | 83% | 2648 fps | 99.1% |
| Shooters World AR Plus | <<locked>> | 82% | 53,867 psi | 89% | 2644 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 52,997 psi | 88% | 2671 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 53,664 psi | 89% | 2661 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 53,954 psi | 90% | 2615 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 53,954 psi | 90% | 2303 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 52,968 psi | 88% | 2641 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,388 psi | 87% | 2710 fps | 98.8% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,142 psi | 88% | 2595 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 52,083 psi | 87% | 2631 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 52,808 psi | 88% | 2664 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 52,373 psi | 87% | 2552 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 51,590 psi | 86% | 2549 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 51,372 psi | 85% | 2638 fps | 99.6% |
| Somchem S335 | <<locked>> | 94% | 54,244 psi | 90% | 2592 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 51,706 psi | 86% | 2631 fps | 98.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,155 psi | 85% | 2651 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,782 psi | 61% | 2484 fps | 97.4% |
| Vihtavuori N120 | <<locked>> | 82% | 53,969 psi | 90% | 2493 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 52,301 psi | 87% | 2530 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 52,141 psi | 87% | 2546 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 52,011 psi | 86% | 2612 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 53,853 psi | 89% | 2631 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,356 psi | 82% | 2592 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 92% | 54,302 psi | 90% | 2651 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 96% | 51,779 psi | 86% | 2625 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,324 psi | 75% | 2536 fps | 98.1% |
| Winchester 748 | <<locked>> | 92% | 53,098 psi | 88% | 2694 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 94% | 51,953 psi | 86% | 2667 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% | 38,159 psi | 63% | 2356 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,342 psi | 82% | 2598 fps | 97.7% |
| Accurate 2230 | <<locked>> | 80% | 49,487 psi | 82% | 2605 fps | 98.1% |
| Accurate 2460 | <<locked>> | 80% | 41,379 psi | 69% | 2444 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 30,792 psi | 51% | 2264 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 36,492 psi | 61% | 2388 fps | 98.5% |
| Accurate 4064 | <<locked>> | 80% | 29,167 psi | 48% | 2241 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 80% | 46,847 psi | 78% | 2438 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,224 psi | 78% | 2454 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 37,318 psi | 62% | 2395 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 50,879 psi | 85% | 2500 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 38,232 psi | 64% | 2395 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 45,919 psi | 76% | 2533 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,057 psi | 62% | 2365 fps | 97% |
| Alliant AR-Comp | <<locked>> | 80% | 35,331 psi | 59% | 2375 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,511 psi | 71% | 2543 fps | 97.8% |
| Alliant Power Pro 2000-MR | 44.4 gr | 88% | 41,176 psi | 68% | 2556 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,489 psi | 54% | 2316 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,424 psi | 72% | 2451 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 37,652 psi | 63% | 2421 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,869 psi | 61% | 2474 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,542 psi | 76% | 2434 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 41,307 psi | 69% | 2490 fps | 95.5% |
| Bofors RP3 | <<locked>> | 84% | 31,763 psi | 53% | 2313 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,247 psi | 65% | 2369 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,838 psi | 58% | 2372 fps | 97% |
| Hodgdon CFE223 | 41.3 gr | 80% | 38,232 psi | 64% | 2484 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 41,959 psi | 70% | 2467 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,728 psi | 71% | 2490 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 43,105 psi | 72% | 2516 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 35,302 psi | 59% | 2359 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,766 psi | 59% | 2395 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 33,620 psi | 56% | 2365 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,454 psi | 42% | 1414 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,171 psi | 57% | 2316 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 33,852 psi | 56% | 2369 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 37,710 psi | 63% | 2379 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 44,527 psi | 74% | 2425 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 36,245 psi | 60% | 2405 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 37,057 psi | 62% | 2365 fps | 97% |
| Lovex D073.4 | <<locked>> | 80% | 50,285 psi | 84% | 2592 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 40,915 psi | 68% | 2441 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 32,909 psi | 55% | 2323 fps | 97.6% |
| Lovex S060 | <<locked>> | 80% | 36,303 psi | 60% | 2303 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 31,038 psi | 52% | 2247 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 49,226 psi | 82% | 2513 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,505 psi | 57% | 2310 fps | 96.3% |
| Norma 202 | <<locked>> | 80% | 34,374 psi | 57% | 2326 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 36,941 psi | 61% | 2411 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 86% | 36,753 psi | 61% | 2421 fps | 95.1% |
| Ramshot TAC | <<locked>> | 88% | 47,834 psi | 79% | 2556 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,810 psi | 59% | 2372 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,118 psi | 67% | 2405 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,483 psi | 42% | 1444 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,539 psi | 69% | 2448 fps | 99.1% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 50,183 psi | 83% | 2602 fps | 95% |
| ReloadSwiss RS 52 | 42.1 gr | 86% | 39,117 psi | 65% | 2516 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 30,371 psi | 50% | 2320 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 38,058 psi | 63% | 2365 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 32,692 psi | 54% | 2264 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 88% | 33,982 psi | 56% | 2356 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 50,285 psi | 84% | 2592 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,909 psi | 55% | 2323 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 31,038 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% | 51,198 psi | 85% | 2267 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,485 psi | 77% | 2546 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 38,058 psi | 63% | 2457 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,077 psi | 73% | 2464 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 45,527 psi | 76% | 2530 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,911 psi | 60% | 2362 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,172 psi | 60% | 2287 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,457 psi | 49% | 2159 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 39,523 psi | 66% | 2438 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 35,737 psi | 59% | 2297 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 36,854 psi | 61% | 2375 fps | 95.3% |
| Somchem S355 | <<locked>> | 88% | 35,404 psi | 59% | 2369 fps | 95.7% |
| Somchem S365 | <<locked>> | 96% | 32,445 psi | 54% | 2382 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 50,763 psi | 84% | 2454 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,089 psi | 68% | 2365 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,158 psi | 60% | 2293 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 31,299 psi | 52% | 2264 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 32,474 psi | 54% | 2270 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 84% | 29,486 psi | 49% | 2215 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 36,854 psi | 61% | 2359 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 31,082 psi | 52% | 2251 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 37,159 psi | 62% | 2382 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 35,621 psi | 59% | 2392 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,838 psi | 58% | 2362 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 89 powders for .308 Win. Ackley Improved loaded with the .308 | 170gr | Speer Deep Curl Flat Points. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,782 fps; across all powders the maximum-charge window runs from 1,585 fps to 2,782 fps. Alliant Reloder- TS 15.5 gives the best case fill at 100 %, and 89 of the 89 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 Deep Curl Flat Points 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.