Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 165gr | Barnes MRX BT bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and ReloadSwiss RS 52.
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 1680 | <<locked>> | 82% | 53,766 psi | 89% | 2539 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 52,634 psi | 87% | 2598 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 54,447 psi | 90% | 2690 fps | 97.8% |
| Accurate 2230 | <<locked>> | 84% | 51,024 psi | 85% | 2641 fps | 97.6% |
| Accurate 2460 | <<locked>> | 90% | 51,358 psi | 85% | 2621 fps | 99.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 51,503 psi | 86% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 52,040 psi | 86% | 2667 fps | 99.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 47,776 psi | 79% | 2628 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 51,677 psi | 86% | 2523 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 52,127 psi | 87% | 2539 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 96% | 52,069 psi | 87% | 2671 fps | 98.3% |
| ADI AR 2207 | <<locked>> | 84% | 52,373 psi | 87% | 2546 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 49,647 psi | 82% | 2608 fps | 97.1% |
| ADI AR 2219 | <<locked>> | 88% | 54,288 psi | 90% | 2677 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 51,822 psi | 86% | 2638 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 96% | 53,447 psi | 89% | 2674 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 52,663 psi | 87% | 2733 fps | 98.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 51,561 psi | 86% | 2753 fps | 97.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 47,819 psi | 79% | 2625 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 90% | 53,185 psi | 88% | 2615 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 52,141 psi | 87% | 2694 fps | 97.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 42,511 psi | 71% | 2602 fps | 96.4% |
| Alliant Reloder-7 | <<locked>> | 84% | 53,447 psi | 89% | 2562 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 53,621 psi | 89% | 2566 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 51,547 psi | 86% | 2677 fps | 97.1% |
| Bofors RP3ᴾ | <<locked>> | 100% | 47,355 psi | 79% | 2631 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 94% | 54,375 psi | 90% | 2628 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 96% | 53,214 psi | 88% | 2710 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 92% | 51,561 psi | 86% | 2740 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 90% | 52,330 psi | 87% | 2651 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 53,461 psi | 89% | 2674 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 49,835 psi | 83% | 2641 fps | 95.9% |
| Hodgdon H4198 | <<locked>> | 84% | 53,490 psi | 89% | 2566 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 52,402 psi | 87% | 2684 fps | 98.8% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 53,708 psi | 89% | 2749 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,272 psi | 55% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 54,172 psi | 90% | 2687 fps | 98.9% |
| IMR 3031 | <<locked>> | 98% | 53,998 psi | 90% | 2723 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 52,257 psi | 87% | 2641 fps | 97.8% |
| IMR 4198 | <<locked>> | 90% | 54,288 psi | 90% | 2582 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 53,417 psi | 89% | 2726 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 94% | 51,822 psi | 86% | 2638 fps | 99.1% |
| Lovex D073.4 | <<locked>> | 84% | 51,663 psi | 86% | 2631 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 90% | 51,300 psi | 85% | 2625 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 98% | 53,461 psi | 89% | 2697 fps | 99.9% |
| Lovex S060 | <<locked>> | 96% | 53,214 psi | 88% | 2612 fps | 98.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 50,952 psi | 85% | 2641 fps | 99.1% |
| Norma 200 | <<locked>> | 86% | 53,200 psi | 88% | 2595 fps | 100% |
| Norma 201 | <<locked>> | 98% | 53,751 psi | 89% | 2667 fps | 99.3% |
| Norma 202 | <<locked>> | 98% | 53,940 psi | 90% | 2677 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 51,140 psi | 85% | 2680 fps | 98.2% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 52,170 psi | 87% | 2710 fps | 98.1% |
| Ramshot TAC | <<locked>> | 94% | 52,823 psi | 88% | 2644 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 94% | 50,836 psi | 84% | 2657 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 92% | 53,432 psi | 89% | 2638 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,344 psi | 55% | 1608 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 51,866 psi | 86% | 2635 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 51,779 psi | 86% | 2753 fps | 97.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 45,542 psi | 76% | 2674 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 94% | 51,590 psi | 86% | 2618 fps | 99.9% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 53,766 psi | 89% | 2657 fps | 99.3% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 44,150 psi | 73% | 2572 fps | 97.5% |
| Shooters World AR Plus | <<locked>> | 84% | 51,663 psi | 86% | 2631 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 98% | 53,461 psi | 89% | 2697 fps | 99.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 50,952 psi | 85% | 2641 fps | 99.1% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 51,938 psi | 86% | 2598 fps | 98.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 52,982 psi | 88% | 2310 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 50,923 psi | 85% | 2631 fps | 99.9% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 46,688 psi | 78% | 2631 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 54,447 psi | 90% | 2635 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 53,534 psi | 89% | 2664 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 53,867 psi | 89% | 2690 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 53,548 psi | 89% | 2585 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 49,211 psi | 82% | 2533 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 52,765 psi | 88% | 2674 fps | 99.4% |
| Somchem S335 | <<locked>> | 96% | 51,967 psi | 86% | 2582 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 52,808 psi | 88% | 2661 fps | 98.2% |
| Somchem S355ᴾ | <<locked>> | 100% | 45,469 psi | 76% | 2579 fps | 97.6% |
| Vihtavuori N120 | <<locked>> | 84% | 52,388 psi | 87% | 2500 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 53,403 psi | 89% | 2566 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 53,098 psi | 88% | 2575 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 52,156 psi | 87% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 51,329 psi | 85% | 2618 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 43,888 psi | 73% | 2523 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 94% | 52,185 psi | 87% | 2635 fps | 99.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 52,678 psi | 88% | 2654 fps | 100% |
| Winchester 748 | <<locked>> | 96% | 54,230 psi | 90% | 2730 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 98% | 52,982 psi | 88% | 2697 fps | 98.8% |
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 1680 | <<locked>> | 80% | 50,430 psi | 84% | 2497 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 33,953 psi | 56% | 2297 fps | 99.6% |
| Accurate 2200 | <<locked>> | 80% | 44,614 psi | 74% | 2530 fps | 95.8% |
| Accurate 2230 | <<locked>> | 80% | 44,266 psi | 74% | 2533 fps | 96.2% |
| Accurate 2460 | <<locked>> | 80% | 36,390 psi | 60% | 2372 fps | 98.2% |
| Accurate 2495 | <<locked>> | 80% | 25,846 psi | 43% | 2175 fps | 98.1% |
| Accurate 2520 | <<locked>> | 80% | 32,010 psi | 53% | 2316 fps | 96.6% |
| Accurate 4064 | <<locked>> | 82% | 26,310 psi | 44% | 2198 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 42,902 psi | 71% | 2392 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 80% | 43,265 psi | 72% | 2402 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 88% | 40,335 psi | 67% | 2470 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 46,180 psi | 77% | 2464 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 41,249 psi | 69% | 2467 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 41,220 psi | 68% | 2477 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 35,288 psi | 59% | 2343 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 31,256 psi | 52% | 2320 fps | 100% |
| Alliant Power Pro 1200-R | 35.7 gr | 80% | 37,594 psi | 62% | 2464 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 44,991 psi | 75% | 2638 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 34,592 psi | 57% | 2382 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 38,943 psi | 65% | 2398 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 40,509 psi | 67% | 2497 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 39,856 psi | 66% | 2546 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 47,311 psi | 79% | 2477 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 41,234 psi | 69% | 2382 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 45,107 psi | 75% | 2572 fps | 95.6% |
| Bofors RP3 | <<locked>> | 92% | 35,984 psi | 60% | 2428 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,549 psi | 59% | 2306 fps | 96.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 32,634 psi | 54% | 2346 fps | 95.5% |
| Hodgdon CFE223 | 41.9 gr | 86% | 41,989 psi | 70% | 2572 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 37,637 psi | 63% | 2411 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 80% | 38,101 psi | 63% | 2425 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 98% | 46,572 psi | 77% | 2589 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 47,326 psi | 79% | 2477 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 86% | 38,000 psi | 63% | 2434 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 36,129 psi | 60% | 2438 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,526 psi | 41% | 1401 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 37,043 psi | 62% | 2395 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 29,718 psi | 49% | 2293 fps | 98.3% |
| IMR 4064 | <<locked>> | 92% | 40,828 psi | 68% | 2454 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 40,335 psi | 67% | 2379 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 38,798 psi | 64% | 2477 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 82% | 35,288 psi | 59% | 2343 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 44,817 psi | 74% | 2526 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 36,114 psi | 60% | 2369 fps | 97% |
| Lovex D073.6 | <<locked>> | 80% | 28,543 psi | 47% | 2244 fps | 95.2% |
| Lovex S060 | <<locked>> | 86% | 39,450 psi | 66% | 2382 fps | 95.4% |
| Lovex S062 | <<locked>> | 86% | 33,011 psi | 55% | 2313 fps | 95% |
| Norma 200 | <<locked>> | 80% | 43,743 psi | 73% | 2461 fps | 100% |
| Norma 201 | <<locked>> | 84% | 34,548 psi | 57% | 2333 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 30,182 psi | 50% | 2254 fps | 96.6% |
| Norma 203B | <<locked>> | 92% | 39,711 psi | 66% | 2487 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 92% | 39,871 psi | 66% | 2500 fps | 95.1% |
| Ramshot TAC | <<locked>> | 92% | 49,298 psi | 82% | 2589 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 86% | 38,827 psi | 65% | 2451 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 84% | 41,133 psi | 68% | 2438 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,714 psi | 41% | 1437 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,217 psi | 62% | 2385 fps | 97.7% |
| ReloadSwiss RS 52 | 42.4 gr | 92% | 42,076 psi | 70% | 2589 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 32,706 psi | 54% | 2392 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 33,562 psi | 56% | 2293 fps | 97.4% |
| Rottweil R 902 | <<locked>> | 86% | 34,824 psi | 58% | 2333 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 94% | 35,897 psi | 60% | 2418 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 44,817 psi | 74% | 2526 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 28,543 psi | 47% | 2244 fps | 95.2% |
| Shooters World Precision | <<locked>> | 86% | 33,011 psi | 55% | 2313 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 39,392 psi | 65% | 2392 fps | 96.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 47,543 psi | 79% | 2244 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 41,727 psi | 69% | 2484 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 41,147 psi | 68% | 2530 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,769 psi | 66% | 2411 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 46,601 psi | 77% | 2556 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 38,899 psi | 65% | 2441 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,547 psi | 54% | 2228 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,252 psi | 44% | 2096 fps | 96.1% |
| Somchem S321 | <<locked>> | 80% | 34,882 psi | 58% | 2362 fps | 95.9% |
| Somchem S335 | <<locked>> | 80% | 31,662 psi | 53% | 2228 fps | 97.9% |
| Somchem S341 | <<locked>> | 88% | 40,161 psi | 67% | 2457 fps | 95.4% |
| Somchem S355 | <<locked>> | 94% | 37,637 psi | 63% | 2434 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 46,238 psi | 77% | 2418 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,144 psi | 62% | 2320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 32,460 psi | 54% | 2241 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 80% | 27,325 psi | 45% | 2198 fps | 98.4% |
| Vihtavuori N140 | <<locked>> | 80% | 28,514 psi | 47% | 2195 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 92% | 33,547 psi | 56% | 2329 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 82% | 35,027 psi | 58% | 2336 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 27,354 psi | 45% | 2178 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 31,459 psi | 52% | 2313 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 37,724 psi | 63% | 2438 fps | 95.6% |
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 88 powders for .308 Win. Ackley Improved loaded with the .308 | 165gr | Barnes MRX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,753 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,753 fps. Accurate 2495 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2208 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. Hodgdon CFE223, Alliant Power Pro 1200-R, ReloadSwiss RS 52 rank at the top here: for .308 Win. Ackley Improved with the .308 | 165gr | 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.