Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 185gr | Berger JUG bullet and 96 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% | 52,504 psi | 87% | 2441 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,142 psi | 88% | 2523 fps | 98.7% |
| Accurate 2230 | <<locked>> | 82% | 53,621 psi | 89% | 2530 fps | 99% |
| Accurate 2460 | <<locked>> | 88% | 54,302 psi | 90% | 2503 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 52,388 psi | 87% | 2493 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 51,866 psi | 86% | 2510 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 52,011 psi | 86% | 2526 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 40,799 psi | 68% | 2421 fps | 96% |
| Accurate LT-30 | <<locked>> | 84% | 53,156 psi | 88% | 2395 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,621 psi | 89% | 2415 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 51,648 psi | 86% | 2516 fps | 99.1% |
| ADI AR 2207 | <<locked>> | 82% | 54,462 psi | 90% | 2408 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 52,156 psi | 87% | 2507 fps | 98.7% |
| ADI AR 2219 | <<locked>> | 84% | 53,011 psi | 88% | 2500 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 54,447 psi | 90% | 2526 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 92% | 53,301 psi | 89% | 2507 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 52,272 psi | 87% | 2569 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 54,027 psi | 90% | 2654 fps | 98.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 54,389 psi | 90% | 2572 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 86% | 52,634 psi | 87% | 2448 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 51,982 psi | 86% | 2543 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,279 psi | 70% | 2434 fps | 96.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,225 psi | 80% | 2572 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 51,866 psi | 86% | 2395 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 54,201 psi | 90% | 2572 fps | 98.7% |
| Bofors RP3 | <<locked>> | 98% | 51,140 psi | 85% | 2539 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,621 psi | 89% | 2470 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 52,475 psi | 87% | 2549 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 50,778 psi | 84% | 2582 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 86% | 51,517 psi | 86% | 2480 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 52,591 psi | 87% | 2507 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 53,142 psi | 88% | 2549 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 92% | 52,054 psi | 86% | 2530 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,450 psi | 64% | 2333 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 53,200 psi | 88% | 2595 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,301 psi | 57% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,316 psi | 89% | 2526 fps | 99.5% |
| IMR 3031 | <<locked>> | 94% | 53,838 psi | 89% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 51,909 psi | 86% | 2493 fps | 98.8% |
| IMR 4198 | <<locked>> | 86% | 53,301 psi | 89% | 2411 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 53,200 psi | 88% | 2572 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 92% | 54,447 psi | 90% | 2526 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 82% | 54,331 psi | 90% | 2513 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 54,273 psi | 90% | 2513 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 53,330 psi | 89% | 2539 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 52,083 psi | 87% | 2454 fps | 99.1% |
| Lovex S062 | <<locked>> | 98% | 54,085 psi | 90% | 2536 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 46,847 psi | 78% | 2428 fps | 95.8% |
| Norma 200 | <<locked>> | 82% | 52,663 psi | 87% | 2425 fps | 100% |
| Norma 201 | <<locked>> | 94% | 53,374 psi | 89% | 2510 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 53,882 psi | 90% | 2523 fps | 100% |
| Norma 203B | <<locked>> | 98% | 54,418 psi | 90% | 2579 fps | 99.4% |
| Norma URPᴾ | <<locked>> | 100% | 41,626 psi | 69% | 2421 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 96% | 51,300 psi | 85% | 2556 fps | 99% |
| Ramshot TAC | <<locked>> | 90% | 51,503 psi | 86% | 2487 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 92% | 53,853 psi | 89% | 2556 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 88% | 52,373 psi | 87% | 2480 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,563 psi | 57% | 1526 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 54,056 psi | 90% | 2510 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 53,983 psi | 90% | 2530 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 51,474 psi | 86% | 2598 fps | 98.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,561 psi | 86% | 2631 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 51,706 psi | 86% | 2464 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 53,766 psi | 89% | 2507 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,618 psi | 84% | 2523 fps | 99.4% |
| Shooters World AR Plus | <<locked>> | 82% | 54,331 psi | 90% | 2513 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 46,847 psi | 78% | 2428 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 94% | 53,330 psi | 89% | 2539 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 54,085 psi | 90% | 2536 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 54,404 psi | 90% | 2487 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,418 psi | 90% | 2178 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 53,621 psi | 89% | 2513 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,968 psi | 88% | 2585 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,679 psi | 89% | 2464 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 52,504 psi | 87% | 2507 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,055 psi | 88% | 2536 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 52,707 psi | 88% | 2425 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 52,112 psi | 87% | 2425 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 52,127 psi | 87% | 2516 fps | 99.8% |
| Somchem S335 | <<locked>> | 92% | 51,764 psi | 86% | 2428 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 52,199 psi | 87% | 2507 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,547 psi | 86% | 2526 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,173 psi | 62% | 2375 fps | 98.1% |
| Vihtavuori N120 | <<locked>> | 82% | 54,389 psi | 90% | 2362 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 52,605 psi | 87% | 2402 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 52,489 psi | 87% | 2415 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 52,417 psi | 87% | 2484 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 54,288 psi | 90% | 2500 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,806 psi | 83% | 2467 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,034 psi | 73% | 2425 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 90% | 51,474 psi | 86% | 2480 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 96% | 52,417 psi | 87% | 2500 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 42,989 psi | 71% | 2431 fps | 96.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,498 psi | 76% | 2418 fps | 98.5% |
| Winchester 748 | <<locked>> | 92% | 53,679 psi | 89% | 2566 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 52,446 psi | 87% | 2543 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% | 38,769 psi | 64% | 2241 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,835 psi | 83% | 2474 fps | 98.2% |
| Accurate 2230 | <<locked>> | 80% | 50,169 psi | 83% | 2480 fps | 98.6% |
| Accurate 2460 | <<locked>> | 80% | 41,727 psi | 69% | 2326 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 30,980 psi | 51% | 2152 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 36,883 psi | 61% | 2277 fps | 99% |
| Accurate 4064 | <<locked>> | 80% | 29,356 psi | 49% | 2136 fps | 98.1% |
| Accurate 4350 | <<locked>> | 98% | 38,014 psi | 63% | 2372 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 47,166 psi | 78% | 2313 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,558 psi | 79% | 2329 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 35,404 psi | 59% | 2234 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 51,401 psi | 85% | 2372 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 36,506 psi | 61% | 2241 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 46,514 psi | 77% | 2411 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,362 psi | 62% | 2251 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 80% | 35,737 psi | 59% | 2257 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,873 psi | 71% | 2421 fps | 98.4% |
| Alliant Power Pro 2000-MR | 40.8 gr | 86% | 38,885 psi | 65% | 2388 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 30,879 psi | 51% | 2165 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,961 psi | 73% | 2329 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 35,781 psi | 59% | 2264 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 39,711 psi | 66% | 2385 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,780 psi | 58% | 2313 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,745 psi | 76% | 2313 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 38,957 psi | 65% | 2326 fps | 95.5% |
| Bofors RP3 | <<locked>> | 82% | 30,052 psi | 50% | 2159 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,711 psi | 66% | 2254 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,012 psi | 58% | 2260 fps | 97.7% |
| Hodgdon CFE223 | 38.8 gr | 80% | 38,566 psi | 64% | 2369 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 80% | 42,598 psi | 71% | 2352 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,902 psi | 71% | 2365 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 40,712 psi | 68% | 2352 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 35,578 psi | 59% | 2247 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 33,852 psi | 56% | 2238 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,749 psi | 53% | 2208 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,454 psi | 42% | 1329 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,403 psi | 57% | 2208 fps | 95.9% |
| IMR 3031 | <<locked>> | 80% | 34,229 psi | 57% | 2254 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 35,882 psi | 60% | 2224 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 44,730 psi | 74% | 2297 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 34,272 psi | 57% | 2247 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 37,362 psi | 62% | 2251 fps | 97.6% |
| Lovex D073.4 | <<locked>> | 80% | 50,879 psi | 85% | 2467 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 41,466 psi | 69% | 2326 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 33,373 psi | 55% | 2218 fps | 98.2% |
| Lovex S060 | <<locked>> | 80% | 36,405 psi | 60% | 2188 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 31,183 psi | 52% | 2139 fps | 95.8% |
| Lovex S065 | <<locked>> | 98% | 44,309 psi | 74% | 2385 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 49,400 psi | 82% | 2382 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,693 psi | 58% | 2198 fps | 97% |
| Norma 202 | <<locked>> | 80% | 34,577 psi | 57% | 2215 fps | 99% |
| Norma 203B | <<locked>> | 84% | 35,099 psi | 58% | 2257 fps | 95.7% |
| Norma URP | <<locked>> | 98% | 39,102 psi | 65% | 2372 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 84% | 34,621 psi | 58% | 2260 fps | 95% |
| Ramshot TAC | <<locked>> | 86% | 45,324 psi | 75% | 2392 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,984 psi | 60% | 2260 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,509 psi | 67% | 2293 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,527 psi | 42% | 1362 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,916 psi | 70% | 2333 fps | 99.4% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 47,297 psi | 79% | 2431 fps | 95% |
| ReloadSwiss RS 52 | 38.6 gr | 84% | 36,825 psi | 61% | 2346 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 28,834 psi | 48% | 2169 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 38,377 psi | 64% | 2251 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 33,040 psi | 55% | 2156 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 86% | 32,314 psi | 54% | 2205 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 50,879 psi | 85% | 2467 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 98% | 44,309 psi | 74% | 2385 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,373 psi | 55% | 2218 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 31,183 psi | 52% | 2139 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,251 psi | 74% | 2339 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,430 psi | 85% | 2146 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,659 psi | 78% | 2418 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 35,940 psi | 60% | 2293 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,657 psi | 74% | 2343 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 43,018 psi | 71% | 2362 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,055 psi | 57% | 2208 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,622 psi | 61% | 2178 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,863 psi | 50% | 2060 fps | 98.7% |
| Somchem S321 | <<locked>> | 80% | 39,755 psi | 66% | 2320 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 35,868 psi | 60% | 2182 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 34,679 psi | 58% | 2215 fps | 95.3% |
| Somchem S355 | <<locked>> | 86% | 33,388 psi | 55% | 2211 fps | 95.7% |
| Somchem S365 | <<locked>> | 94% | 30,792 psi | 51% | 2228 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 51,343 psi | 85% | 2326 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,597 psi | 69% | 2251 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,637 psi | 61% | 2182 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,749 psi | 53% | 2159 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 32,692 psi | 54% | 2159 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 28,007 psi | 47% | 2070 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 98% | 41,321 psi | 69% | 2375 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 37,202 psi | 62% | 2247 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 80% | 31,430 psi | 52% | 2149 fps | 98.1% |
| Vihtavuori N550 | <<locked>> | 98% | 40,321 psi | 67% | 2382 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 35,186 psi | 58% | 2228 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 35,911 psi | 60% | 2280 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,880 psi | 55% | 2205 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 96 powders for .308 Win. Ackley Improved loaded with the .308 | 185gr | Berger JUG. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,654 fps; across all powders the maximum-charge window runs from 1,490 fps to 2,654 fps. Accurate 4350 gives the best case fill at 100 %, and 96 of the 96 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 185.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder- TS 15.5, Alliant Reloder-16 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 | 185gr | Berger JUG 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.