Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 200gr | Peregrine VRG-3 bullet and 95 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 LEVERevolution.
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>> | 90% | 53,882 psi | 90% | 2359 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 52,373 psi | 87% | 2385 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 53,563 psi | 89% | 2408 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,737 psi | 89% | 2438 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 53,330 psi | 89% | 2444 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,308 psi | 70% | 2359 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 84% | 54,418 psi | 90% | 2313 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 51,750 psi | 86% | 2297 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 52,924 psi | 88% | 2441 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 98% | 53,983 psi | 90% | 2438 fps | 99.4% |
| ADI AR 2219 | <<locked>> | 82% | 51,155 psi | 85% | 2379 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,359 psi | 87% | 2402 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 51,663 psi | 86% | 2382 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,969 psi | 90% | 2493 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 52,344 psi | 87% | 2536 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 53,534 psi | 89% | 2451 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 52,620 psi | 87% | 2451 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,925 psi | 90% | 2362 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,882 psi | 90% | 2474 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,410 psi | 72% | 2375 fps | 97.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,893 psi | 83% | 2507 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 53,345 psi | 89% | 2316 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 52,620 psi | 87% | 2457 fps | 99.1% |
| Bofors RP3 | <<locked>> | 98% | 52,794 psi | 88% | 2464 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 51,764 psi | 86% | 2352 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,143 psi | 90% | 2474 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 52,475 psi | 87% | 2510 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 86% | 53,113 psi | 88% | 2402 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,375 psi | 90% | 2431 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 51,227 psi | 85% | 2431 fps | 98.4% |
| Hodgdon H4895 | <<locked>> | 92% | 53,345 psi | 89% | 2451 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,407 psi | 65% | 2274 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 51,634 psi | 86% | 2477 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,345 psi | 57% | 1430 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 51,735 psi | 86% | 2411 fps | 99.7% |
| IMR 3031 | <<locked>> | 92% | 52,272 psi | 87% | 2434 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,301 psi | 89% | 2421 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 92% | 51,140 psi | 85% | 2359 fps | 96.1% |
| IMR 4198 | <<locked>> | 84% | 51,837 psi | 86% | 2293 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 53,156 psi | 88% | 2418 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,770 psi | 68% | 2316 fps | 97% |
| IMR 4895 | <<locked>> | 94% | 51,750 psi | 86% | 2457 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 90% | 52,359 psi | 87% | 2402 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 52,025 psi | 86% | 2392 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 51,372 psi | 85% | 2418 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 53,534 psi | 89% | 2382 fps | 99.7% |
| Lovex S062 | <<locked>> | 96% | 52,431 psi | 87% | 2418 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,457 psi | 81% | 2365 fps | 97.1% |
| Norma 200 | <<locked>> | 82% | 53,621 psi | 89% | 2336 fps | 100% |
| Norma 201 | <<locked>> | 92% | 51,416 psi | 85% | 2392 fps | 99.9% |
| Norma 202 | <<locked>> | 92% | 51,779 psi | 86% | 2398 fps | 100% |
| Norma 203B | <<locked>> | 96% | 52,953 psi | 88% | 2464 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 42,946 psi | 71% | 2359 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 96% | 53,156 psi | 88% | 2484 fps | 99.6% |
| Ramshot TAC | <<locked>> | 90% | 52,866 psi | 88% | 2415 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 90% | 51,721 psi | 86% | 2431 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,998 psi | 90% | 2411 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,606 psi | 57% | 1463 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 52,214 psi | 87% | 2392 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 52,243 psi | 87% | 2418 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 53,330 psi | 89% | 2530 fps | 99.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 53,388 psi | 89% | 2562 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,438 psi | 71% | 2379 fps | 96.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 44,135 psi | 73% | 2398 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 90% | 52,736 psi | 88% | 2382 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 51,822 psi | 86% | 2388 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,243 psi | 87% | 2451 fps | 99.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,457 psi | 81% | 2365 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 92% | 51,372 psi | 85% | 2418 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 52,431 psi | 87% | 2418 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 52,170 psi | 87% | 2365 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 51,474 psi | 86% | 2388 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 51,068 psi | 85% | 2464 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 51,982 psi | 86% | 2346 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,041 psi | 90% | 2438 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 51,242 psi | 85% | 2415 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,099 psi | 90% | 2346 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,447 psi | 89% | 2343 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,505 psi | 89% | 2438 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 52,823 psi | 88% | 2346 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,838 psi | 89% | 2438 fps | 99.6% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,447 psi | 89% | 2454 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,203 psi | 63% | 2316 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 88% | 53,867 psi | 89% | 2320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 54,012 psi | 90% | 2336 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 54,302 psi | 90% | 2402 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 52,330 psi | 87% | 2379 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,401 psi | 85% | 2395 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,469 psi | 76% | 2362 fps | 97.7% |
| Vihtavuori N530 | <<locked>> | 90% | 53,098 psi | 88% | 2405 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 53,983 psi | 90% | 2421 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,396 psi | 74% | 2369 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,934 psi | 78% | 2356 fps | 99.4% |
| Winchester 748 | <<locked>> | 90% | 51,924 psi | 86% | 2444 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 54,201 psi | 90% | 2470 fps | 99.9% |
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% | 39,392 psi | 65% | 2165 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 42,627 psi | 71% | 2251 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 31,473 psi | 52% | 2083 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,753 psi | 63% | 2208 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 29,834 psi | 50% | 2070 fps | 98.9% |
| Accurate 4350 | <<locked>> | 94% | 34,287 psi | 57% | 2218 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 48,080 psi | 80% | 2234 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,515 psi | 81% | 2254 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 36,114 psi | 60% | 2169 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 82% | 33,011 psi | 55% | 2090 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 47,819 psi | 79% | 2333 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,130 psi | 63% | 2182 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 80% | 36,970 psi | 61% | 2185 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,019 psi | 73% | 2349 fps | 99.1% |
| Alliant Power Pro 2000-MR | 38.4 gr | 82% | 34,911 psi | 58% | 2224 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,448 psi | 61% | 2182 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,689 psi | 49% | 2060 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,107 psi | 75% | 2251 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,258 psi | 57% | 2156 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 36,100 psi | 60% | 2231 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 86% | 31,241 psi | 52% | 2156 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,920 psi | 78% | 2238 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 35,012 psi | 58% | 2165 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 28,601 psi | 48% | 2051 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,422 psi | 67% | 2185 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,926 psi | 60% | 2195 fps | 98.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,697 psi | 66% | 2306 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 80% | 43,671 psi | 73% | 2277 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,092 psi | 73% | 2293 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 36,695 psi | 61% | 2195 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 36,318 psi | 60% | 2178 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 30,705 psi | 51% | 2093 fps | 95.2% |
| Hodgdon LEVERevolution | 36.7 gr | 80% | 32,430 psi | 54% | 2149 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,309 psi | 42% | 1273 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,157 psi | 58% | 2142 fps | 97.1% |
| IMR 3031 | <<locked>> | 80% | 35,360 psi | 59% | 2188 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,300 psi | 54% | 2070 fps | 95% |
| IMR 4166 Enduron | <<locked>> | 90% | 47,979 psi | 80% | 2313 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 45,948 psi | 76% | 2218 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 47,181 psi | 78% | 2333 fps | 95.1% |
| IMR 4831 | <<locked>> | 96% | 35,868 psi | 60% | 2228 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 32,764 psi | 54% | 2133 fps | 96% |
| IMR 8208 XBR | <<locked>> | 80% | 38,130 psi | 63% | 2182 fps | 98.5% |
| Lovex D073.5 | <<locked>> | 80% | 42,366 psi | 70% | 2254 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 34,142 psi | 57% | 2152 fps | 99% |
| Lovex S060 | <<locked>> | 80% | 37,260 psi | 62% | 2129 fps | 97.2% |
| Lovex S062 | <<locked>> | 80% | 31,836 psi | 53% | 2077 fps | 97% |
| Lovex S065 | <<locked>> | 94% | 40,190 psi | 67% | 2234 fps | 95% |
| Norma 200 | <<locked>> | 80% | 50,589 psi | 84% | 2300 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,418 psi | 59% | 2136 fps | 98% |
| Norma 202 | <<locked>> | 80% | 35,520 psi | 59% | 2149 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 31,459 psi | 52% | 2100 fps | 95.4% |
| Norma URP | <<locked>> | 94% | 35,447 psi | 59% | 2221 fps | 95% |
| Ramshot Big Game | <<locked>> | 82% | 33,315 psi | 55% | 2156 fps | 95.7% |
| Ramshot TAC | <<locked>> | 82% | 40,596 psi | 67% | 2228 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,927 psi | 61% | 2195 fps | 97.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,452 psi | 69% | 2224 fps | 98% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,643 psi | 43% | 1306 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,946 psi | 71% | 2260 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 45,571 psi | 76% | 2320 fps | 95.6% |
| ReloadSwiss RS 52 | 36.3 gr | 80% | 33,069 psi | 55% | 2185 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,528 psi | 46% | 2067 fps | 96.2% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 37,159 psi | 62% | 2283 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 41,089 psi | 68% | 2343 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 38,943 psi | 65% | 2178 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 33,649 psi | 56% | 2093 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 82% | 28,761 psi | 48% | 2047 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 40,190 psi | 67% | 2234 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,142 psi | 57% | 2152 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 31,836 psi | 53% | 2077 fps | 97% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,382 psi | 75% | 2270 fps | 99.3% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,950 psi | 80% | 2343 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 32,489 psi | 54% | 2142 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,701 psi | 76% | 2264 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 38,290 psi | 64% | 2198 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,824 psi | 58% | 2146 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,202 psi | 62% | 2106 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,327 psi | 50% | 1991 fps | 99.3% |
| Somchem S321 | <<locked>> | 80% | 40,712 psi | 68% | 2251 fps | 99.2% |
| Somchem S335 | <<locked>> | 80% | 36,680 psi | 61% | 2113 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 35,578 psi | 59% | 2156 fps | 96.6% |
| Somchem S355 | <<locked>> | 82% | 30,052 psi | 50% | 2060 fps | 95.4% |
| Somchem S365 | <<locked>> | 90% | 27,746 psi | 46% | 2080 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 42,337 psi | 70% | 2169 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,333 psi | 62% | 2110 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,387 psi | 54% | 2087 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,576 psi | 56% | 2096 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 26,818 psi | 45% | 1969 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 94% | 37,507 psi | 62% | 2224 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 37,971 psi | 63% | 2178 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 80% | 32,082 psi | 53% | 2083 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 94% | 36,477 psi | 61% | 2228 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 31,502 psi | 52% | 2077 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 36,883 psi | 61% | 2215 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,649 psi | 56% | 2142 fps | 96.8% |
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 111 powders for .308 Win. Ackley Improved loaded with the .308 | 200gr | Peregrine VRG-3. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,562 fps; across all powders the maximum-charge window runs from 1,430 fps to 2,562 fps. Accurate 4350 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 50–90 %, 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, Hodgdon LEVERevolution rank at the top here: for .308 Win. Ackley Improved with the .308 | 200gr | Peregrine VRG-3 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-23, Alliant Reloder-26, Hodgdon H4350 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.