Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 200gr | Sierra MatchKing bullet and 98 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.
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>> | 88% | 52,301 psi | 87% | 2336 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 54,041 psi | 90% | 2402 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 52,402 psi | 87% | 2388 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 51,779 psi | 86% | 2408 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 52,185 psi | 87% | 2425 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,193 psi | 73% | 2385 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 82% | 52,417 psi | 87% | 2287 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 52,823 psi | 88% | 2306 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 51,329 psi | 85% | 2415 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 96% | 52,127 psi | 87% | 2411 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 82% | 52,446 psi | 87% | 2392 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 53,940 psi | 90% | 2421 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 53,534 psi | 89% | 2398 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 51,909 psi | 86% | 2464 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 53,896 psi | 90% | 2559 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 51,909 psi | 86% | 2428 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 54,360 psi | 90% | 2470 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 52,286 psi | 87% | 2339 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 51,880 psi | 86% | 2444 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,527 psi | 74% | 2392 fps | 97.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,474 psi | 86% | 2530 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 51,271 psi | 85% | 2290 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 54,172 psi | 90% | 2474 fps | 99.2% |
| Bofors RP3 | <<locked>> | 96% | 51,213 psi | 85% | 2441 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 52,446 psi | 87% | 2405 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 52,924 psi | 88% | 2365 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 52,475 psi | 87% | 2448 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 54,157 psi | 90% | 2530 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 51,285 psi | 85% | 2375 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 52,228 psi | 87% | 2402 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 53,055 psi | 88% | 2451 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 90% | 51,721 psi | 86% | 2425 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,915 psi | 68% | 2297 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 53,330 psi | 89% | 2493 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,664 psi | 58% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 52,939 psi | 88% | 2425 fps | 99.8% |
| IMR 3031 | <<locked>> | 92% | 54,128 psi | 90% | 2454 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 51,503 psi | 86% | 2395 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 92% | 52,620 psi | 87% | 2379 fps | 96.4% |
| IMR 4198 | <<locked>> | 84% | 52,997 psi | 88% | 2306 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 51,358 psi | 85% | 2392 fps | 96.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,467 psi | 71% | 2339 fps | 97.4% |
| IMR 4895 | <<locked>> | 94% | 53,127 psi | 88% | 2470 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 90% | 53,940 psi | 90% | 2421 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 54,027 psi | 90% | 2411 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 53,330 psi | 89% | 2438 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 51,779 psi | 86% | 2356 fps | 99.5% |
| Lovex S062 | <<locked>> | 96% | 54,259 psi | 90% | 2438 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,777 psi | 83% | 2382 fps | 97.3% |
| Norma 201 | <<locked>> | 92% | 53,359 psi | 89% | 2411 fps | 100% |
| Norma 202 | <<locked>> | 92% | 53,548 psi | 89% | 2415 fps | 100% |
| Norma 203B | <<locked>> | 96% | 54,331 psi | 90% | 2480 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 44,498 psi | 74% | 2382 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 94% | 51,372 psi | 85% | 2461 fps | 99.5% |
| Ramshot TAC | <<locked>> | 90% | 54,404 psi | 90% | 2434 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 53,330 psi | 89% | 2451 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 51,953 psi | 86% | 2382 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,012 psi | 58% | 1470 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 53,867 psi | 89% | 2408 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 53,476 psi | 89% | 2431 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 51,590 psi | 86% | 2503 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 51,198 psi | 85% | 2530 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,106 psi | 73% | 2402 fps | 97.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 45,571 psi | 76% | 2421 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 88% | 51,184 psi | 85% | 2356 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 53,780 psi | 89% | 2411 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 54,244 psi | 90% | 2474 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 52,446 psi | 87% | 2405 fps | 95.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,777 psi | 83% | 2382 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 92% | 53,330 psi | 89% | 2438 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 54,259 psi | 90% | 2438 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 53,432 psi | 89% | 2379 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 52,765 psi | 88% | 2402 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 52,649 psi | 87% | 2484 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 53,229 psi | 88% | 2356 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 52,330 psi | 87% | 2411 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 52,881 psi | 88% | 2434 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 52,301 psi | 87% | 2323 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 51,547 psi | 86% | 2320 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 50,125 psi | 83% | 2343 fps | 95.9% |
| Somchem S321 | <<locked>> | 86% | 51,503 psi | 86% | 2408 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 51,300 psi | 85% | 2323 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 51,663 psi | 86% | 2408 fps | 99.5% |
| Somchem S355 | <<locked>> | 98% | 51,837 psi | 86% | 2431 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,798 psi | 66% | 2343 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 86% | 52,170 psi | 87% | 2297 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 52,214 psi | 87% | 2313 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 52,576 psi | 87% | 2379 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 54,012 psi | 90% | 2395 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,098 psi | 88% | 2415 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,036 psi | 78% | 2382 fps | 98% |
| Vihtavuori N530 | <<locked>> | 90% | 54,404 psi | 90% | 2418 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 51,909 psi | 86% | 2395 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,050 psi | 77% | 2392 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,312 psi | 80% | 2375 fps | 99.5% |
| Winchester 748 | <<locked>> | 90% | 53,301 psi | 89% | 2461 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 48,225 psi | 80% | 2434 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 92% | 52,402 psi | 87% | 2444 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% | 40,915 psi | 68% | 2182 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,251 psi | 74% | 2270 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,431 psi | 56% | 2113 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,595 psi | 66% | 2234 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 31,618 psi | 53% | 2100 fps | 99.3% |
| Accurate 4350 | <<locked>> | 94% | 35,810 psi | 59% | 2241 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 49,516 psi | 82% | 2251 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 49,908 psi | 83% | 2270 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 37,666 psi | 63% | 2195 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 34,156 psi | 57% | 2110 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 49,124 psi | 82% | 2349 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,653 psi | 66% | 2205 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 80% | 38,450 psi | 64% | 2205 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,759 psi | 76% | 2372 fps | 99.4% |
| Alliant Power Pro 2000-MR | 38.6 gr | 82% | 36,042 psi | 60% | 2247 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,029 psi | 63% | 2205 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,009 psi | 52% | 2083 fps | 96.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,557 psi | 77% | 2267 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,605 psi | 56% | 2133 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 94% | 37,449 psi | 62% | 2257 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 86% | 32,634 psi | 54% | 2182 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,950 psi | 80% | 2247 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,187 psi | 60% | 2185 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 30,081 psi | 50% | 2077 fps | 96.1% |
| Bofors RP7 | <<locked>> | 98% | 49,182 psi | 82% | 2359 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,582 psi | 69% | 2198 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,579 psi | 62% | 2221 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,973 psi | 68% | 2326 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 80% | 44,947 psi | 75% | 2290 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,716 psi | 76% | 2313 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 38,058 psi | 63% | 2218 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 37,884 psi | 63% | 2205 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 31,894 psi | 53% | 2116 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,634 psi | 56% | 2169 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,701 psi | 43% | 1276 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,318 psi | 60% | 2162 fps | 97.5% |
| IMR 3031 | <<locked>> | 80% | 36,753 psi | 61% | 2208 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,504 psi | 56% | 2090 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,470 psi | 77% | 2287 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 47,137 psi | 78% | 2231 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 48,298 psi | 80% | 2349 fps | 95.4% |
| IMR 4831 | <<locked>> | 94% | 35,143 psi | 58% | 2205 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 34,345 psi | 57% | 2159 fps | 96.5% |
| IMR 8208 XBR | <<locked>> | 80% | 39,653 psi | 66% | 2205 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 80% | 43,947 psi | 73% | 2274 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 35,650 psi | 59% | 2175 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 38,406 psi | 64% | 2146 fps | 97.5% |
| Lovex S062 | <<locked>> | 80% | 33,257 psi | 55% | 2100 fps | 97.5% |
| Lovex S065 | <<locked>> | 94% | 41,553 psi | 69% | 2254 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 36,883 psi | 61% | 2156 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 36,869 psi | 61% | 2169 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 32,982 psi | 55% | 2126 fps | 96% |
| Norma URP | <<locked>> | 94% | 36,985 psi | 61% | 2247 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 32,401 psi | 54% | 2129 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 39,305 psi | 65% | 2198 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,435 psi | 64% | 2221 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,656 psi | 71% | 2241 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,817 psi | 43% | 1306 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,512 psi | 74% | 2280 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 44,295 psi | 74% | 2297 fps | 95.3% |
| ReloadSwiss RS 52 | 36.5 gr | 80% | 34,389 psi | 57% | 2208 fps | 95.8% |
| ReloadSwiss RS 60 | 37.1 gr | 80% | 28,689 psi | 48% | 2093 fps | 96.8% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 36,143 psi | 60% | 2257 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 39,914 psi | 66% | 2316 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 40,669 psi | 68% | 2198 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 35,128 psi | 58% | 2116 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 80% | 28,471 psi | 47% | 2031 fps | 95% |
| Rottweil R 907 | <<locked>> | 98% | 49,182 psi | 82% | 2359 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 41,553 psi | 69% | 2254 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,650 psi | 59% | 2175 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 33,257 psi | 55% | 2100 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,963 psi | 78% | 2293 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,588 psi | 82% | 2359 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,633 psi | 53% | 2116 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,963 psi | 78% | 2277 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,173 psi | 62% | 2172 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,042 psi | 60% | 2165 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,493 psi | 64% | 2126 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,531 psi | 52% | 2011 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 46,775 psi | 78% | 2297 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 42,076 psi | 70% | 2270 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 38,014 psi | 63% | 2133 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 36,825 psi | 61% | 2172 fps | 97% |
| Somchem S355 | <<locked>> | 80% | 29,660 psi | 49% | 2044 fps | 95.2% |
| Somchem S365 | <<locked>> | 88% | 27,398 psi | 46% | 2064 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 43,642 psi | 73% | 2185 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,566 psi | 64% | 2126 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,823 psi | 56% | 2106 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,882 psi | 58% | 2116 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 28,079 psi | 47% | 1991 fps | 96.2% |
| Vihtavuori N160 | <<locked>> | 92% | 36,608 psi | 61% | 2205 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 39,291 psi | 65% | 2198 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 33,330 psi | 55% | 2103 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 94% | 37,753 psi | 63% | 2247 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,676 psi | 51% | 2054 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 38,189 psi | 63% | 2234 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 45,237 psi | 75% | 2385 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,157 psi | 58% | 2169 fps | 97.3% |
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 98 powders for .308 Win. Ackley Improved loaded with the .308 | 200gr | Sierra MatchKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,559 fps; across all powders the maximum-charge window runs from 1,434 fps to 2,559 fps. Accurate 4350 gives the best case fill at 100 %, and 98 of the 98 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 1:12.0 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 | Sierra MatchKing 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.