Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 180gr | Barnes MRX BT 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>> | 92% | 52,272 psi | 87% | 2474 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 53,359 psi | 89% | 2556 fps | 98.4% |
| Accurate 2230 | <<locked>> | 84% | 53,896 psi | 90% | 2566 fps | 98.8% |
| Accurate 2460 | <<locked>> | 88% | 50,908 psi | 85% | 2497 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 51,445 psi | 85% | 2520 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 51,953 psi | 86% | 2546 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 50,850 psi | 84% | 2549 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 54,041 psi | 90% | 2438 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 51,053 psi | 85% | 2411 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 51,619 psi | 86% | 2549 fps | 98.8% |
| ADI AR 2207 | <<locked>> | 82% | 51,721 psi | 86% | 2415 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 52,475 psi | 87% | 2539 fps | 98.4% |
| ADI AR 2219 | <<locked>> | 86% | 53,534 psi | 89% | 2543 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 51,213 psi | 85% | 2513 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 94% | 53,055 psi | 88% | 2539 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 52,069 psi | 87% | 2602 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 54,447 psi | 90% | 2687 fps | 98.6% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 50,937 psi | 85% | 2556 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 88% | 52,518 psi | 87% | 2484 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 51,938 psi | 86% | 2572 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 44,976 psi | 75% | 2543 fps | 98.1% |
| Alliant Reloder-7 | <<locked>> | 82% | 52,417 psi | 87% | 2425 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 52,533 psi | 87% | 2434 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 54,462 psi | 90% | 2605 fps | 98.4% |
| Bofors RP3ᴾ | <<locked>> | 100% | 50,807 psi | 84% | 2569 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 92% | 53,882 psi | 90% | 2507 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 94% | 52,431 psi | 87% | 2582 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 90% | 51,111 psi | 85% | 2615 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 88% | 51,953 psi | 86% | 2520 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 53,040 psi | 88% | 2546 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 52,794 psi | 88% | 2572 fps | 97.5% |
| Hodgdon H4198 | <<locked>> | 82% | 52,692 psi | 88% | 2434 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 52,011 psi | 86% | 2559 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 53,330 psi | 89% | 2628 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,924 psi | 56% | 1503 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 53,606 psi | 89% | 2562 fps | 99.3% |
| IMR 3031 | <<locked>> | 96% | 53,708 psi | 89% | 2592 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 51,735 psi | 86% | 2520 fps | 98.4% |
| IMR 4198 | <<locked>> | 88% | 53,592 psi | 89% | 2451 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 53,214 psi | 88% | 2605 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 92% | 51,213 psi | 85% | 2513 fps | 99.5% |
| Lovex D073.4 | <<locked>> | 82% | 50,995 psi | 85% | 2503 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 50,589 psi | 84% | 2500 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 96% | 53,040 psi | 88% | 2572 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 52,359 psi | 87% | 2487 fps | 98.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 54,099 psi | 90% | 2566 fps | 99.8% |
| Norma 200 | <<locked>> | 84% | 52,605 psi | 87% | 2461 fps | 100% |
| Norma 201 | <<locked>> | 96% | 53,214 psi | 88% | 2543 fps | 99.7% |
| Norma 202 | <<locked>> | 96% | 53,461 psi | 89% | 2552 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 54,433 psi | 90% | 2612 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 98% | 51,474 psi | 86% | 2585 fps | 98.7% |
| Ramshot TAC | <<locked>> | 92% | 51,735 psi | 86% | 2516 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 94% | 54,041 psi | 90% | 2589 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 90% | 52,910 psi | 88% | 2520 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,765 psi | 56% | 1532 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 51,140 psi | 85% | 2503 fps | 99.9% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 53,896 psi | 90% | 2556 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 51,372 psi | 85% | 2631 fps | 98.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 48,167 psi | 80% | 2608 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 94% | 54,244 psi | 90% | 2533 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 53,621 psi | 89% | 2539 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 46,934 psi | 78% | 2503 fps | 98.7% |
| Shooters World AR Plus | <<locked>> | 82% | 50,995 psi | 85% | 2503 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 53,040 psi | 88% | 2572 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 54,099 psi | 90% | 2566 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 51,213 psi | 85% | 2474 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 52,170 psi | 87% | 2185 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 53,650 psi | 89% | 2549 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 49,400 psi | 82% | 2566 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 53,751 psi | 89% | 2500 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 52,620 psi | 87% | 2536 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 53,200 psi | 88% | 2566 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 52,924 psi | 88% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 52,011 psi | 86% | 2454 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 52,098 psi | 87% | 2546 fps | 99.7% |
| Somchem S335 | <<locked>> | 94% | 51,735 psi | 86% | 2461 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 52,286 psi | 87% | 2539 fps | 98.8% |
| Somchem S355ᴾ | <<locked>> | 100% | 48,109 psi | 80% | 2507 fps | 98.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 34,214 psi | 57% | 2339 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 82% | 51,721 psi | 86% | 2369 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 53,098 psi | 88% | 2441 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 52,605 psi | 87% | 2451 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 52,199 psi | 87% | 2516 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 53,998 psi | 90% | 2530 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 46,499 psi | 77% | 2454 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 92% | 51,576 psi | 86% | 2510 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 98% | 52,112 psi | 87% | 2530 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,627 psi | 71% | 2395 fps | 97.5% |
| Winchester 748 | <<locked>> | 94% | 53,722 psi | 89% | 2602 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 52,518 psi | 87% | 2575 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% | 35,868 psi | 60% | 2228 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 46,963 psi | 78% | 2457 fps | 97.3% |
| Accurate 2230 | <<locked>> | 80% | 46,673 psi | 78% | 2461 fps | 97.6% |
| Accurate 2460 | <<locked>> | 80% | 38,653 psi | 64% | 2306 fps | 99.2% |
| Accurate 2495 | <<locked>> | 80% | 27,934 psi | 46% | 2126 fps | 99.3% |
| Accurate 2520 | <<locked>> | 80% | 33,939 psi | 56% | 2254 fps | 98.1% |
| Accurate 4064 | <<locked>> | 80% | 26,527 psi | 44% | 2103 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 80% | 44,715 psi | 74% | 2306 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 45,078 psi | 75% | 2323 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 35,157 psi | 58% | 2260 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 48,327 psi | 80% | 2369 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 38,406 psi | 64% | 2306 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 43,642 psi | 73% | 2402 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,882 psi | 58% | 2234 fps | 96.5% |
| Alliant AR-Comp | <<locked>> | 80% | 33,214 psi | 55% | 2247 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,871 psi | 66% | 2402 fps | 97.4% |
| Alliant Power Pro 2000-MR | 42 gr | 90% | 41,597 psi | 69% | 2467 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 32,271 psi | 54% | 2228 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,959 psi | 68% | 2320 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 37,623 psi | 63% | 2333 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 94% | 37,014 psi | 61% | 2385 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 49,458 psi | 82% | 2388 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,366 psi | 72% | 2306 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 41,814 psi | 69% | 2408 fps | 95.8% |
| Bofors RP3 | <<locked>> | 86% | 31,502 psi | 52% | 2228 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,260 psi | 62% | 2241 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,358 psi | 54% | 2234 fps | 96.4% |
| Hodgdon CFE223 | 39.1 gr | 82% | 38,479 psi | 64% | 2395 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 39,813 psi | 66% | 2339 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 40,132 psi | 67% | 2352 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 94% | 43,120 psi | 72% | 2425 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 49,327 psi | 82% | 2388 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 33,025 psi | 55% | 2221 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 33,562 psi | 56% | 2280 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,932 psi | 41% | 1339 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 34,301 psi | 57% | 2234 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 31,502 psi | 52% | 2231 fps | 99.4% |
| IMR 4064 | <<locked>> | 88% | 37,956 psi | 63% | 2293 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 42,409 psi | 70% | 2297 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 35,969 psi | 60% | 2313 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 34,882 psi | 58% | 2234 fps | 96.5% |
| Lovex D073.4 | <<locked>> | 80% | 47,239 psi | 78% | 2451 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 38,435 psi | 64% | 2306 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 80% | 30,530 psi | 51% | 2192 fps | 97% |
| Lovex S060 | <<locked>> | 82% | 36,419 psi | 61% | 2218 fps | 95.5% |
| Lovex S062 | <<locked>> | 82% | 30,632 psi | 51% | 2159 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 46,354 psi | 77% | 2379 fps | 100% |
| Norma 201 | <<locked>> | 80% | 32,227 psi | 54% | 2178 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 32,227 psi | 54% | 2198 fps | 98.2% |
| Norma 203B | <<locked>> | 86% | 34,505 psi | 57% | 2274 fps | 95% |
| Ramshot Big Game | <<locked>> | 88% | 36,709 psi | 61% | 2333 fps | 95.2% |
| Ramshot TAC | <<locked>> | 88% | 45,281 psi | 75% | 2418 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 82% | 36,056 psi | 60% | 2290 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 38,087 psi | 63% | 2277 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,918 psi | 41% | 1368 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,291 psi | 65% | 2316 fps | 98.8% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 50,517 psi | 84% | 2507 fps | 95.2% |
| ReloadSwiss RS 52 | 39.8 gr | 88% | 39,131 psi | 65% | 2425 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 30,414 psi | 51% | 2241 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 35,607 psi | 59% | 2231 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 30,618 psi | 51% | 2136 fps | 95% |
| Rottweil R 903 | <<locked>> | 90% | 33,692 psi | 56% | 2267 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 47,239 psi | 78% | 2451 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,530 psi | 51% | 2192 fps | 97% |
| Shooters World Precision | <<locked>> | 82% | 30,632 psi | 51% | 2159 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 41,640 psi | 69% | 2326 fps | 97.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,182 psi | 82% | 2152 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,845 psi | 73% | 2405 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 35,810 psi | 59% | 2320 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,843 psi | 70% | 2333 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 42,699 psi | 71% | 2385 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 36,085 psi | 60% | 2280 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,156 psi | 57% | 2162 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,615 psi | 46% | 2037 fps | 97.6% |
| Somchem S321 | <<locked>> | 80% | 37,043 psi | 62% | 2300 fps | 97.5% |
| Somchem S335 | <<locked>> | 80% | 33,562 psi | 56% | 2169 fps | 99% |
| Somchem S341 | <<locked>> | 84% | 37,101 psi | 62% | 2293 fps | 95.6% |
| Somchem S355 | <<locked>> | 88% | 32,938 psi | 55% | 2231 fps | 95% |
| Somchem S365 | <<locked>> | 98% | 32,300 psi | 54% | 2293 fps | 95.8% |
| Vihtavuori N120 | <<locked>> | 80% | 48,356 psi | 80% | 2326 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,928 psi | 65% | 2241 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,156 psi | 57% | 2169 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 29,066 psi | 48% | 2136 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 30,211 psi | 50% | 2139 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 86% | 29,269 psi | 49% | 2133 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 34,635 psi | 58% | 2228 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 80% | 29,037 psi | 48% | 2126 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 35,041 psi | 58% | 2247 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 33,402 psi | 55% | 2257 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 84% | 35,056 psi | 58% | 2280 fps | 95.8% |
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 | 180gr | Barnes MRX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,687 fps; across all powders the maximum-charge window runs from 1,503 fps to 2,687 fps. Accurate 4064 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 56–90 %, leaving at least 10 % headroom. The 180.0 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 | 180gr | Barnes MRX BT 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.