Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 172gr | Speer Impact 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.
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>> | 92% | 52,286 psi | 87% | 2530 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 53,185 psi | 88% | 2612 fps | 98% |
| Accurate 2230 | <<locked>> | 84% | 53,722 psi | 89% | 2621 fps | 98.4% |
| Accurate 2460 | <<locked>> | 90% | 54,317 psi | 90% | 2595 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 51,590 psi | 86% | 2579 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 51,663 psi | 86% | 2602 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 51,198 psi | 85% | 2612 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 53,548 psi | 89% | 2487 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 53,969 psi | 90% | 2507 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 51,372 psi | 85% | 2602 fps | 98.5% |
| ADI AR 2207 | <<locked>> | 82% | 51,547 psi | 86% | 2470 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 52,373 psi | 87% | 2592 fps | 98% |
| ADI AR 2219 | <<locked>> | 86% | 53,185 psi | 88% | 2598 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 54,288 psi | 90% | 2612 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 94% | 52,663 psi | 87% | 2598 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 51,866 psi | 86% | 2657 fps | 99.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 54,128 psi | 90% | 2736 fps | 98.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 50,546 psi | 84% | 2608 fps | 99.1% |
| Alliant Reloder-10x | <<locked>> | 88% | 52,591 psi | 87% | 2543 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 51,909 psi | 86% | 2628 fps | 98.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 44,889 psi | 75% | 2592 fps | 97.6% |
| Alliant Reloder-7 | <<locked>> | 82% | 52,663 psi | 87% | 2487 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 52,518 psi | 87% | 2490 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 54,186 psi | 90% | 2657 fps | 97.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 50,836 psi | 84% | 2625 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 92% | 53,679 psi | 89% | 2559 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 94% | 52,330 psi | 87% | 2638 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 92% | 54,331 psi | 90% | 2720 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 88% | 51,677 psi | 86% | 2579 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 52,649 psi | 87% | 2602 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 52,678 psi | 88% | 2628 fps | 97% |
| Hodgdon H4198 | <<locked>> | 82% | 52,301 psi | 87% | 2487 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 51,706 psi | 86% | 2612 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 53,055 psi | 88% | 2680 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,055 psi | 57% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 53,534 psi | 89% | 2618 fps | 99.1% |
| IMR 3031 | <<locked>> | 96% | 53,650 psi | 89% | 2654 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 51,692 psi | 86% | 2575 fps | 98.1% |
| IMR 4198 | <<locked>> | 88% | 53,490 psi | 89% | 2510 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 53,142 psi | 88% | 2661 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 94% | 54,288 psi | 90% | 2612 fps | 99.5% |
| Lovex D073.4 | <<locked>> | 82% | 50,966 psi | 85% | 2559 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 90% | 54,288 psi | 90% | 2602 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 96% | 53,040 psi | 88% | 2631 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 52,518 psi | 87% | 2543 fps | 98.6% |
| Lovex S062ᴾ | <<locked>> | 100% | 54,085 psi | 90% | 2625 fps | 99.6% |
| Norma 200 | <<locked>> | 84% | 52,895 psi | 88% | 2523 fps | 100% |
| Norma 201 | <<locked>> | 96% | 53,447 psi | 89% | 2602 fps | 99.5% |
| Norma 202 | <<locked>> | 96% | 53,563 psi | 89% | 2612 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 54,331 psi | 90% | 2667 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 98% | 51,184 psi | 85% | 2638 fps | 98.3% |
| Ramshot TAC | <<locked>> | 92% | 51,692 psi | 86% | 2569 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 94% | 53,824 psi | 89% | 2644 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 90% | 52,591 psi | 87% | 2569 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,939 psi | 56% | 1575 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 54,273 psi | 90% | 2605 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 51,155 psi | 85% | 2684 fps | 98.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 47,979 psi | 80% | 2661 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 94% | 54,433 psi | 90% | 2592 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 53,505 psi | 89% | 2592 fps | 99.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 47,036 psi | 78% | 2559 fps | 98.4% |
| Shooters World AR Plus | <<locked>> | 82% | 50,966 psi | 85% | 2559 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 96% | 53,040 psi | 88% | 2631 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 54,085 psi | 90% | 2625 fps | 99.6% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 50,981 psi | 85% | 2526 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 52,185 psi | 87% | 2241 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 53,751 psi | 89% | 2608 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 49,255 psi | 82% | 2615 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 53,635 psi | 89% | 2559 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 52,533 psi | 87% | 2592 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 53,084 psi | 88% | 2621 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 52,779 psi | 88% | 2513 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 52,040 psi | 86% | 2510 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 52,098 psi | 87% | 2602 fps | 99.5% |
| Somchem S335 | <<locked>> | 94% | 51,634 psi | 86% | 2516 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 52,083 psi | 87% | 2592 fps | 98.4% |
| Somchem S355ᴾ | <<locked>> | 100% | 48,182 psi | 80% | 2562 fps | 98.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 34,461 psi | 57% | 2388 fps | 96% |
| Vihtavuori N120 | <<locked>> | 82% | 51,459 psi | 85% | 2425 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 53,026 psi | 88% | 2500 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 52,402 psi | 87% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 51,880 psi | 86% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 53,925 psi | 90% | 2589 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 46,470 psi | 77% | 2507 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 92% | 51,677 psi | 86% | 2569 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 98% | 52,098 psi | 87% | 2585 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,554 psi | 71% | 2441 fps | 96.9% |
| Winchester 748 | <<locked>> | 94% | 53,519 psi | 89% | 2657 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 96% | 52,301 psi | 87% | 2628 fps | 99% |
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% | 36,376 psi | 60% | 2283 fps | 99.9% |
| Accurate 2200 | <<locked>> | 80% | 46,659 psi | 78% | 2507 fps | 96.8% |
| Accurate 2230 | <<locked>> | 80% | 46,760 psi | 78% | 2513 fps | 97.2% |
| Accurate 2460 | <<locked>> | 80% | 39,059 psi | 65% | 2362 fps | 99% |
| Accurate 2495 | <<locked>> | 80% | 28,587 psi | 47% | 2182 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 34,301 psi | 57% | 2306 fps | 97.7% |
| Accurate 4064 | <<locked>> | 80% | 27,079 psi | 45% | 2159 fps | 96.5% |
| Accurate LT-30 | <<locked>> | 80% | 44,875 psi | 75% | 2365 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 45,252 psi | 75% | 2379 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 37,724 psi | 63% | 2362 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 48,602 psi | 81% | 2431 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 40,988 psi | 68% | 2405 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 43,656 psi | 73% | 2457 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,172 psi | 58% | 2283 fps | 96% |
| Alliant AR-Comp | <<locked>> | 80% | 33,257 psi | 55% | 2300 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 40,074 psi | 67% | 2454 fps | 96.9% |
| Alliant Power Pro 2000-MR | 43.5 gr | 92% | 44,425 psi | 74% | 2572 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 34,737 psi | 58% | 2329 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 41,379 psi | 69% | 2379 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 40,248 psi | 67% | 2434 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 36,956 psi | 61% | 2431 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 49,400 psi | 82% | 2444 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,366 psi | 72% | 2359 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 41,640 psi | 69% | 2454 fps | 95.2% |
| Bofors RP3 | <<locked>> | 88% | 34,026 psi | 57% | 2329 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,536 psi | 62% | 2293 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,648 psi | 54% | 2290 fps | 96% |
| Hodgdon CFE223 | 40.6 gr | 84% | 41,249 psi | 69% | 2500 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 39,929 psi | 66% | 2395 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 40,205 psi | 67% | 2408 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 96% | 46,209 psi | 77% | 2526 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 49,371 psi | 82% | 2448 fps | 100% |
| Hodgdon H4895 | <<locked>> | 82% | 35,607 psi | 59% | 2326 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 33,736 psi | 56% | 2329 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,222 psi | 42% | 1378 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 36,564 psi | 61% | 2329 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 31,879 psi | 53% | 2287 fps | 99.2% |
| IMR 4064 | <<locked>> | 90% | 40,582 psi | 67% | 2395 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 42,308 psi | 70% | 2352 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 36,405 psi | 60% | 2372 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 35,172 psi | 58% | 2283 fps | 96% |
| Lovex D073.4 | <<locked>> | 80% | 47,340 psi | 79% | 2507 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 38,769 psi | 64% | 2359 fps | 98% |
| Lovex D073.6 | <<locked>> | 80% | 30,980 psi | 51% | 2244 fps | 96.7% |
| Lovex S060 | <<locked>> | 82% | 36,695 psi | 61% | 2270 fps | 95% |
| Lovex S062 | <<locked>> | 84% | 33,156 psi | 55% | 2260 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 46,557 psi | 77% | 2438 fps | 100% |
| Norma 201 | <<locked>> | 80% | 32,547 psi | 54% | 2228 fps | 95.2% |
| Norma 202 | <<locked>> | 80% | 32,329 psi | 54% | 2247 fps | 97.8% |
| Norma 203B | <<locked>> | 88% | 36,985 psi | 61% | 2375 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 90% | 39,320 psi | 65% | 2434 fps | 95.5% |
| Ramshot TAC | <<locked>> | 90% | 48,631 psi | 81% | 2523 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 38,508 psi | 64% | 2388 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 38,247 psi | 64% | 2326 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,237 psi | 42% | 1407 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,479 psi | 66% | 2372 fps | 98.5% |
| ReloadSwiss RS 52 | 40.3 gr | 88% | 39,073 psi | 65% | 2470 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 30,632 psi | 51% | 2283 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 36,056 psi | 60% | 2287 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 82% | 33,069 psi | 55% | 2234 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 90% | 33,939 psi | 56% | 2320 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 47,340 psi | 79% | 2507 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,980 psi | 51% | 2244 fps | 96.7% |
| Shooters World Precision | <<locked>> | 84% | 33,156 psi | 55% | 2260 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 41,742 psi | 69% | 2379 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,284 psi | 82% | 2208 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,888 psi | 73% | 2461 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 38,377 psi | 64% | 2421 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 42,018 psi | 70% | 2392 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 45,818 psi | 76% | 2487 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 38,566 psi | 64% | 2379 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,563 psi | 57% | 2215 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,021 psi | 47% | 2090 fps | 97.3% |
| Somchem S321 | <<locked>> | 80% | 37,246 psi | 62% | 2352 fps | 97.1% |
| Somchem S335 | <<locked>> | 80% | 33,794 psi | 56% | 2218 fps | 98.7% |
| Somchem S341 | <<locked>> | 84% | 37,130 psi | 62% | 2343 fps | 95% |
| Somchem S355 | <<locked>> | 90% | 35,433 psi | 59% | 2333 fps | 95.3% |
| Somchem S365 | <<locked>> | 98% | 32,387 psi | 54% | 2336 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 48,573 psi | 81% | 2388 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 39,291 psi | 65% | 2297 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,476 psi | 57% | 2224 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 29,486 psi | 49% | 2192 fps | 99.3% |
| Vihtavuori N140 | <<locked>> | 80% | 30,530 psi | 51% | 2192 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 88% | 31,560 psi | 52% | 2231 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 34,882 psi | 58% | 2277 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 80% | 29,414 psi | 49% | 2178 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 37,434 psi | 62% | 2343 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 33,620 psi | 56% | 2310 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 35,172 psi | 58% | 2329 fps | 95.3% |
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 | 172gr | Speer Impact. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,736 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,736 fps. Accurate 4064 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 56–90 %, leaving at least 10 % headroom. The 172.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 | 172gr | Speer Impact 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.