Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 200gr | Lapua Subsonic bullet and 97 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 ReloadSwiss RS 60.
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>> | 88% | 52,417 psi | 87% | 2336 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 54,085 psi | 90% | 2402 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 52,504 psi | 87% | 2388 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 51,909 psi | 86% | 2411 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 52,330 psi | 87% | 2428 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,338 psi | 74% | 2388 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 82% | 52,475 psi | 87% | 2287 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 52,881 psi | 88% | 2310 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 54,317 psi | 90% | 2457 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 96% | 51,837 psi | 86% | 2408 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 82% | 52,518 psi | 87% | 2392 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 53,679 psi | 89% | 2418 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 53,214 psi | 88% | 2395 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 51,967 psi | 86% | 2464 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 53,563 psi | 89% | 2552 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 51,082 psi | 85% | 2428 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 52,359 psi | 87% | 2339 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 51,953 psi | 86% | 2448 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,628 psi | 74% | 2392 fps | 97.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,184 psi | 85% | 2523 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 51,329 psi | 85% | 2290 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 53,925 psi | 90% | 2470 fps | 99.2% |
| Bofors RP3 | <<locked>> | 98% | 54,447 psi | 90% | 2484 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 52,185 psi | 87% | 2402 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 52,997 psi | 88% | 2365 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 52,199 psi | 87% | 2444 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 54,201 psi | 90% | 2530 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 51,387 psi | 85% | 2379 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 51,953 psi | 86% | 2398 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 52,779 psi | 88% | 2448 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 90% | 51,445 psi | 85% | 2421 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,683 psi | 68% | 2293 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 53,374 psi | 89% | 2497 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,708 psi | 58% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 53,011 psi | 88% | 2428 fps | 99.8% |
| IMR 3031 | <<locked>> | 92% | 54,201 psi | 90% | 2454 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 51,576 psi | 86% | 2395 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 92% | 52,373 psi | 87% | 2375 fps | 96.4% |
| IMR 4198 | <<locked>> | 84% | 53,055 psi | 88% | 2306 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 54,360 psi | 90% | 2434 fps | 96.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,511 psi | 71% | 2343 fps | 97.4% |
| IMR 4895 | <<locked>> | 94% | 53,200 psi | 88% | 2474 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 90% | 53,679 psi | 89% | 2418 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 53,737 psi | 89% | 2408 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 53,417 psi | 89% | 2441 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 51,837 psi | 86% | 2356 fps | 99.5% |
| Lovex S062 | <<locked>> | 96% | 53,969 psi | 90% | 2434 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,893 psi | 83% | 2382 fps | 97.4% |
| Norma 201 | <<locked>> | 92% | 53,055 psi | 88% | 2408 fps | 100% |
| Norma 202 | <<locked>> | 92% | 53,635 psi | 89% | 2418 fps | 100% |
| Norma 203B | <<locked>> | 96% | 54,418 psi | 90% | 2480 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 44,614 psi | 74% | 2385 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 94% | 51,126 psi | 85% | 2457 fps | 99.5% |
| Ramshot TAC | <<locked>> | 88% | 50,952 psi | 85% | 2388 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 53,417 psi | 89% | 2454 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 51,706 psi | 86% | 2379 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,056 psi | 58% | 1470 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 53,592 psi | 89% | 2405 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 53,534 psi | 89% | 2434 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 51,706 psi | 86% | 2503 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 51,329 psi | 85% | 2533 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,150 psi | 73% | 2405 fps | 97.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 45,353 psi | 75% | 2418 fps | 96.7% |
| Rottweil R 901 | <<locked>> | 88% | 51,300 psi | 85% | 2356 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 53,476 psi | 89% | 2408 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 54,346 psi | 90% | 2474 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 52,185 psi | 87% | 2402 fps | 95.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,893 psi | 83% | 2382 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 92% | 53,417 psi | 89% | 2441 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 53,969 psi | 90% | 2434 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 53,476 psi | 89% | 2379 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 52,866 psi | 88% | 2405 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 52,779 psi | 88% | 2487 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 53,330 psi | 89% | 2356 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 52,054 psi | 86% | 2408 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 52,953 psi | 88% | 2438 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 52,388 psi | 87% | 2323 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 51,677 psi | 86% | 2320 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 50,183 psi | 83% | 2343 fps | 96% |
| Somchem S321 | <<locked>> | 86% | 51,619 psi | 86% | 2408 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 54,273 psi | 90% | 2359 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 51,779 psi | 86% | 2408 fps | 99.5% |
| Somchem S355 | <<locked>> | 98% | 51,561 psi | 86% | 2428 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,581 psi | 66% | 2339 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 86% | 52,272 psi | 87% | 2297 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 52,286 psi | 87% | 2313 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 52,692 psi | 88% | 2382 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 54,099 psi | 90% | 2398 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,200 psi | 88% | 2415 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,123 psi | 78% | 2385 fps | 98% |
| Vihtavuori N530 | <<locked>> | 88% | 51,039 psi | 85% | 2375 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 51,982 psi | 86% | 2395 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 45,803 psi | 76% | 2385 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,109 psi | 80% | 2372 fps | 99.5% |
| Winchester 748 | <<locked>> | 90% | 53,345 psi | 89% | 2461 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 48,312 psi | 80% | 2434 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 52,141 psi | 87% | 2441 fps | 99.8% |
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 2015 | <<locked>> | 80% | 40,944 psi | 68% | 2182 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,280 psi | 74% | 2270 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,475 psi | 56% | 2113 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,363 psi | 65% | 2228 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 31,647 psi | 53% | 2100 fps | 99.3% |
| Accurate 4350 | <<locked>> | 94% | 35,853 psi | 60% | 2241 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 49,240 psi | 82% | 2247 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 49,632 psi | 82% | 2267 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 37,449 psi | 62% | 2192 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 33,939 psi | 56% | 2106 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 49,182 psi | 82% | 2349 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,436 psi | 66% | 2201 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 80% | 38,464 psi | 64% | 2205 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,542 psi | 76% | 2369 fps | 99.3% |
| Alliant Power Pro 2000-MR | 38.6 gr | 82% | 36,114 psi | 60% | 2247 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,024 psi | 52% | 2083 fps | 96.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,253 psi | 77% | 2260 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,402 psi | 55% | 2129 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 94% | 37,246 psi | 62% | 2254 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 86% | 32,445 psi | 54% | 2178 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 48,037 psi | 80% | 2247 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,274 psi | 60% | 2188 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 30,153 psi | 50% | 2077 fps | 96.2% |
| Bofors RP7 | <<locked>> | 98% | 49,313 psi | 82% | 2359 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,655 psi | 69% | 2201 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,347 psi | 62% | 2218 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,060 psi | 68% | 2326 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 80% | 45,034 psi | 75% | 2293 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,455 psi | 76% | 2310 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 38,130 psi | 63% | 2218 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 37,695 psi | 63% | 2201 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 31,966 psi | 53% | 2119 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,678 psi | 56% | 2169 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,730 psi | 43% | 1276 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,390 psi | 60% | 2162 fps | 97.5% |
| IMR 3031 | <<locked>> | 80% | 36,535 psi | 61% | 2201 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,547 psi | 56% | 2093 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,224 psi | 77% | 2283 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 47,181 psi | 78% | 2231 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 48,327 psi | 80% | 2349 fps | 95.4% |
| IMR 4831 | <<locked>> | 94% | 34,954 psi | 58% | 2205 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 34,156 psi | 57% | 2156 fps | 96.5% |
| IMR 8208 XBR | <<locked>> | 80% | 39,436 psi | 66% | 2201 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 80% | 44,048 psi | 73% | 2277 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 35,737 psi | 59% | 2175 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 38,450 psi | 64% | 2146 fps | 97.5% |
| Lovex S062 | <<locked>> | 80% | 33,286 psi | 55% | 2100 fps | 97.5% |
| Lovex S065 | <<locked>> | 94% | 41,611 psi | 69% | 2254 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 36,912 psi | 61% | 2156 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 36,956 psi | 61% | 2172 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 32,808 psi | 55% | 2119 fps | 95.9% |
| Norma URP | <<locked>> | 94% | 37,014 psi | 61% | 2247 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 32,256 psi | 54% | 2126 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 39,378 psi | 65% | 2201 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,218 psi | 63% | 2215 fps | 97.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,714 psi | 71% | 2244 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,846 psi | 43% | 1309 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,280 psi | 74% | 2277 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 44,063 psi | 73% | 2293 fps | 95.3% |
| ReloadSwiss RS 52 | 36.5 gr | 80% | 34,403 psi | 57% | 2208 fps | 95.8% |
| ReloadSwiss RS 60 | 37.1 gr | 80% | 28,703 psi | 48% | 2093 fps | 96.8% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 36,172 psi | 60% | 2257 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 39,987 psi | 66% | 2320 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 40,698 psi | 68% | 2201 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 35,157 psi | 58% | 2116 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 80% | 28,311 psi | 47% | 2028 fps | 95% |
| Rottweil R 907 | <<locked>> | 98% | 49,313 psi | 82% | 2359 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 41,611 psi | 69% | 2254 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,737 psi | 59% | 2175 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 33,286 psi | 55% | 2100 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,702 psi | 78% | 2287 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,313 psi | 82% | 2356 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,647 psi | 53% | 2116 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,050 psi | 78% | 2277 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,231 psi | 62% | 2172 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,085 psi | 60% | 2165 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,508 psi | 64% | 2126 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,589 psi | 52% | 2014 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 46,876 psi | 78% | 2300 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 42,163 psi | 70% | 2270 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 38,101 psi | 63% | 2133 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 36,883 psi | 61% | 2175 fps | 97% |
| Somchem S355 | <<locked>> | 80% | 29,689 psi | 49% | 2044 fps | 95.2% |
| Somchem S365 | <<locked>> | 88% | 27,238 psi | 45% | 2060 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 43,729 psi | 73% | 2185 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,580 psi | 64% | 2126 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,866 psi | 56% | 2110 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,664 psi | 58% | 2113 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 27,891 psi | 46% | 1988 fps | 96.1% |
| Vihtavuori N160 | <<locked>> | 92% | 36,405 psi | 60% | 2201 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 39,320 psi | 65% | 2198 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 33,402 psi | 55% | 2106 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 94% | 37,855 psi | 63% | 2251 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,705 psi | 51% | 2054 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 38,247 psi | 64% | 2234 fps | 99.3% |
| Winchester 760 | <<locked>> | 98% | 45,353 psi | 75% | 2388 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,969 psi | 58% | 2162 fps | 97.2% |
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 97 powders for .308 Win. Ackley Improved loaded with the .308 | 200gr | Lapua Subsonic. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,552 fps; across all powders the maximum-charge window runs from 1,434 fps to 2,552 fps. Accurate 4350 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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, ReloadSwiss RS 60 rank at the top here: for .308 Win. Ackley Improved with the .308 | 200gr | Lapua Subsonic 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.