Load Specifications
Load data in caliber .308 Win. with .308 | 200gr | Sierra GameKing 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 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.
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% | 53,417 psi | 89% | 2326 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,766 psi | 89% | 2405 fps | 99.1% |
| Accurate 2230 | <<locked>> | 82% | 54,389 psi | 90% | 2415 fps | 99.4% |
| Accurate 2460 | <<locked>> | 86% | 51,488 psi | 86% | 2346 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 53,359 psi | 89% | 2379 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 52,837 psi | 88% | 2398 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 52,736 psi | 88% | 2411 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 41,423 psi | 69% | 2320 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 84% | 53,867 psi | 89% | 2280 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,302 psi | 90% | 2300 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 51,895 psi | 86% | 2398 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 98% | 53,055 psi | 88% | 2395 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 84% | 53,621 psi | 89% | 2382 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 51,605 psi | 86% | 2365 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 54,244 psi | 90% | 2385 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 52,837 psi | 88% | 2451 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 51,300 psi | 85% | 2490 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 51,750 psi | 86% | 2411 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,505 psi | 89% | 2333 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 52,620 psi | 87% | 2428 fps | 99.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,583 psi | 71% | 2326 fps | 96.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,834 psi | 81% | 2461 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 52,634 psi | 87% | 2283 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 51,474 psi | 86% | 2411 fps | 98.7% |
| Bofors RP3 | <<locked>> | 98% | 51,764 psi | 86% | 2425 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,896 psi | 90% | 2352 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 53,374 psi | 89% | 2434 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 51,445 psi | 85% | 2467 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 86% | 52,373 psi | 87% | 2365 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,243 psi | 88% | 2392 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 53,809 psi | 89% | 2434 fps | 98.4% |
| Hodgdon H4895 | <<locked>> | 92% | 52,359 psi | 87% | 2408 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,667 psi | 64% | 2231 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 53,925 psi | 90% | 2477 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,432 psi | 57% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,157 psi | 90% | 2415 fps | 99.8% |
| IMR 3031 | <<locked>> | 92% | 51,242 psi | 85% | 2398 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 52,272 psi | 87% | 2379 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 94% | 53,693 psi | 89% | 2362 fps | 96.2% |
| IMR 4198 | <<locked>> | 86% | 54,143 psi | 90% | 2297 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 52,170 psi | 87% | 2375 fps | 95.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,001 psi | 66% | 2274 fps | 96.4% |
| IMR 4895 | <<locked>> | 96% | 53,911 psi | 90% | 2457 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 90% | 51,605 psi | 86% | 2365 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 86% | 51,663 psi | 86% | 2356 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 54,143 psi | 90% | 2425 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 52,837 psi | 88% | 2343 fps | 99.4% |
| Lovex S062 | <<locked>> | 96% | 51,576 psi | 86% | 2379 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 47,601 psi | 79% | 2323 fps | 96.5% |
| Norma 200 | <<locked>> | 82% | 53,417 psi | 89% | 2306 fps | 100% |
| Norma 201 | <<locked>> | 94% | 54,012 psi | 90% | 2395 fps | 100% |
| Norma 202 | <<locked>> | 94% | 54,215 psi | 90% | 2402 fps | 100% |
| Norma 203B | <<locked>> | 96% | 51,721 psi | 86% | 2418 fps | 99.4% |
| Norma URPᴾ | <<locked>> | 100% | 42,409 psi | 70% | 2320 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 96% | 52,185 psi | 87% | 2444 fps | 99.4% |
| Ramshot TAC | <<locked>> | 90% | 52,199 psi | 87% | 2375 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 92% | 54,331 psi | 90% | 2438 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,142 psi | 88% | 2369 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,780 psi | 58% | 1444 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 51,329 psi | 85% | 2352 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 54,404 psi | 90% | 2415 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 52,315 psi | 87% | 2487 fps | 99.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,257 psi | 87% | 2516 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 41,582 psi | 69% | 2333 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 90% | 52,170 psi | 87% | 2346 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 54,433 psi | 90% | 2392 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 51,619 psi | 86% | 2415 fps | 99.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 47,601 psi | 79% | 2323 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 94% | 54,143 psi | 90% | 2425 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 51,576 psi | 86% | 2379 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 51,445 psi | 85% | 2326 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,041 psi | 90% | 2395 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,476 psi | 89% | 2467 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 51,314 psi | 85% | 2310 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 53,403 psi | 89% | 2398 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,780 psi | 89% | 2421 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 53,200 psi | 88% | 2310 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 52,388 psi | 87% | 2306 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 52,678 psi | 88% | 2398 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 52,243 psi | 87% | 2313 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 52,678 psi | 88% | 2395 fps | 99.4% |
| Somchem S355ᴾ | <<locked>> | 100% | 52,359 psi | 87% | 2411 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,623 psi | 63% | 2274 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 88% | 53,534 psi | 89% | 2290 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,011 psi | 88% | 2300 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 53,055 psi | 88% | 2365 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 51,677 psi | 86% | 2346 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,720 psi | 84% | 2359 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,614 psi | 74% | 2320 fps | 97.1% |
| Vihtavuori N530 | <<locked>> | 90% | 51,982 psi | 86% | 2362 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 96% | 52,881 psi | 88% | 2382 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 43,410 psi | 72% | 2323 fps | 96.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,905 psi | 76% | 2310 fps | 99% |
| Winchester 748 | <<locked>> | 92% | 54,433 psi | 90% | 2451 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,040 psi | 88% | 2425 fps | 99.7% |
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% | 39,088 psi | 65% | 2133 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,198 psi | 83% | 2356 fps | 98.7% |
| Accurate 2230 | <<locked>> | 80% | 50,778 psi | 84% | 2369 fps | 99% |
| Accurate 2460 | <<locked>> | 80% | 42,366 psi | 70% | 2218 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 31,691 psi | 53% | 2060 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,492 psi | 62% | 2175 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 30,037 psi | 50% | 2047 fps | 98.7% |
| Accurate 4350 | <<locked>> | 96% | 36,027 psi | 60% | 2224 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 47,500 psi | 79% | 2201 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,892 psi | 80% | 2218 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 35,926 psi | 60% | 2139 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 34,592 psi | 57% | 2096 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 47,079 psi | 78% | 2297 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,913 psi | 63% | 2152 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 36,463 psi | 61% | 2156 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,569 psi | 72% | 2313 fps | 98.9% |
| Alliant Power Pro 2000-MR | 37.7 gr | 84% | 36,854 psi | 61% | 2234 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,312 psi | 49% | 2024 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,570 psi | 74% | 2218 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 33,924 psi | 56% | 2119 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 96% | 37,913 psi | 63% | 2238 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 88% | 33,170 psi | 55% | 2169 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,441 psi | 77% | 2205 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 37,130 psi | 62% | 2178 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 28,660 psi | 48% | 2024 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,132 psi | 67% | 2149 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,650 psi | 59% | 2162 fps | 98.3% |
| Hodgdon CFE223 | 36.7 gr | 80% | 39,044 psi | 65% | 2264 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 80% | 43,192 psi | 72% | 2244 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,584 psi | 72% | 2260 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 38,841 psi | 65% | 2208 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 36,129 psi | 60% | 2149 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,358 psi | 54% | 2103 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,184 psi | 53% | 2113 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,672 psi | 43% | 1260 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,911 psi | 58% | 2110 fps | 96.7% |
| IMR 3031 | <<locked>> | 80% | 34,925 psi | 58% | 2156 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,098 psi | 57% | 2080 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 92% | 50,299 psi | 84% | 2316 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 45,353 psi | 75% | 2185 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 49,211 psi | 82% | 2333 fps | 95.1% |
| IMR 4831 | <<locked>> | 98% | 37,652 psi | 63% | 2231 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 32,648 psi | 54% | 2103 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 37,913 psi | 63% | 2152 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 80% | 41,887 psi | 70% | 2218 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 33,881 psi | 56% | 2119 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 37,014 psi | 61% | 2096 fps | 96.7% |
| Lovex S062 | <<locked>> | 80% | 31,763 psi | 53% | 2047 fps | 96.6% |
| Lovex S065 | <<locked>> | 96% | 42,337 psi | 70% | 2241 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 50,314 psi | 84% | 2270 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,331 psi | 59% | 2103 fps | 97.7% |
| Norma 202 | <<locked>> | 80% | 35,056 psi | 58% | 2116 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 33,315 psi | 55% | 2110 fps | 95.7% |
| Norma URP | <<locked>> | 96% | 37,391 psi | 62% | 2231 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 82% | 32,953 psi | 55% | 2116 fps | 95% |
| Ramshot TAC | <<locked>> | 84% | 42,786 psi | 71% | 2234 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,579 psi | 61% | 2162 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,162 psi | 68% | 2192 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,788 psi | 43% | 1289 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,685 psi | 71% | 2228 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 44,991 psi | 75% | 2280 fps | 95% |
| ReloadSwiss RS 52 | 35.7 gr | 82% | 35,070 psi | 58% | 2198 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,311 psi | 45% | 2028 fps | 95.4% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 39,189 psi | 65% | 2290 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 38,914 psi | 65% | 2149 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 33,620 psi | 56% | 2064 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 84% | 30,705 psi | 51% | 2064 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 42,337 psi | 70% | 2241 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,881 psi | 56% | 2119 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 31,763 psi | 53% | 2047 fps | 96.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,947 psi | 75% | 2238 fps | 99.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,427 psi | 79% | 2306 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 34,272 psi | 57% | 2152 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,310 psi | 75% | 2231 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 40,814 psi | 68% | 2211 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,447 psi | 57% | 2110 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,144 psi | 62% | 2080 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,342 psi | 50% | 1969 fps | 99.1% |
| Somchem S321 | <<locked>> | 80% | 40,466 psi | 67% | 2218 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 36,550 psi | 61% | 2083 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 35,331 psi | 59% | 2123 fps | 96.1% |
| Somchem S355 | <<locked>> | 82% | 30,066 psi | 50% | 2031 fps | 95% |
| Somchem S365 | <<locked>> | 92% | 29,312 psi | 49% | 2090 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 42,177 psi | 70% | 2142 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,188 psi | 62% | 2083 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,329 psi | 54% | 2064 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,127 psi | 55% | 2064 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 26,629 psi | 44% | 1939 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 96% | 39,247 psi | 65% | 2228 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 37,768 psi | 63% | 2149 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 80% | 31,778 psi | 53% | 2051 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 96% | 38,261 psi | 64% | 2234 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,359 psi | 55% | 2087 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 36,448 psi | 61% | 2182 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,388 psi | 55% | 2110 fps | 96.3% |
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 95 powders for .308 Win. loaded with the .308 | 200gr | Sierra GameKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,516 fps; across all powders the maximum-charge window runs from 1,411 fps to 2,516 fps. Accurate 4350 gives the best case fill at 100 %, and 95 of the 95 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 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 CFE223 rank at the top here: for .308 Win. with the .308 | 200gr | Sierra GameKing 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.