Load Specifications
Load data in caliber .308 Win. with .310 | 200gr | Rhino Solid Shank bullet and 94 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% | 52,707 psi | 88% | 2313 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,084 psi | 88% | 2388 fps | 98.9% |
| Accurate 2230 | <<locked>> | 82% | 53,751 psi | 89% | 2402 fps | 99.2% |
| Accurate 2460 | <<locked>> | 88% | 54,462 psi | 90% | 2375 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 52,678 psi | 88% | 2365 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 52,272 psi | 87% | 2385 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 52,112 psi | 87% | 2398 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 40,959 psi | 68% | 2303 fps | 96.5% |
| Accurate LT-30 | <<locked>> | 84% | 53,229 psi | 88% | 2267 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,635 psi | 89% | 2287 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 51,750 psi | 86% | 2392 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 98% | 52,533 psi | 87% | 2382 fps | 99% |
| ADI AR 2219 | <<locked>> | 84% | 53,345 psi | 89% | 2372 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 51,024 psi | 85% | 2352 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 53,490 psi | 89% | 2375 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 52,518 psi | 87% | 2441 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,969 psi | 90% | 2520 fps | 99.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 54,375 psi | 90% | 2441 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 86% | 52,765 psi | 88% | 2320 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 52,083 psi | 87% | 2415 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,177 psi | 70% | 2313 fps | 96.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,095 psi | 80% | 2441 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 52,141 psi | 87% | 2270 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 50,966 psi | 85% | 2398 fps | 98.5% |
| Bofors RP3 | <<locked>> | 98% | 51,140 psi | 85% | 2411 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,722 psi | 89% | 2343 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 52,852 psi | 88% | 2425 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 54,433 psi | 90% | 2500 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 86% | 51,706 psi | 86% | 2352 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 52,663 psi | 87% | 2379 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 53,301 psi | 89% | 2421 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 92% | 52,127 psi | 87% | 2398 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,276 psi | 64% | 2215 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 53,388 psi | 89% | 2464 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,505 psi | 57% | 1407 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,577 psi | 89% | 2402 fps | 99.7% |
| IMR 3031 | <<locked>> | 94% | 54,288 psi | 90% | 2428 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 52,156 psi | 87% | 2369 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 94% | 53,200 psi | 88% | 2349 fps | 96% |
| IMR 4198 | <<locked>> | 86% | 53,751 psi | 89% | 2287 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 39,566 psi | 66% | 2260 fps | 96.2% |
| IMR 4895 | <<locked>> | 96% | 53,388 psi | 89% | 2444 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 90% | 51,024 psi | 85% | 2352 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 86% | 51,039 psi | 85% | 2343 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 53,548 psi | 89% | 2411 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 52,243 psi | 87% | 2329 fps | 99.3% |
| Lovex S062 | <<locked>> | 96% | 51,024 psi | 85% | 2365 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 47,152 psi | 78% | 2310 fps | 96.3% |
| Norma 200 | <<locked>> | 82% | 53,040 psi | 88% | 2297 fps | 100% |
| Norma 201 | <<locked>> | 94% | 53,432 psi | 89% | 2382 fps | 99.9% |
| Norma 202 | <<locked>> | 94% | 54,027 psi | 90% | 2392 fps | 100% |
| Norma 203B | <<locked>> | 96% | 51,184 psi | 85% | 2405 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 42,003 psi | 70% | 2306 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 96% | 51,329 psi | 85% | 2428 fps | 99.2% |
| Ramshot TAC | <<locked>> | 90% | 51,706 psi | 86% | 2365 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 53,838 psi | 89% | 2425 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 88% | 52,620 psi | 87% | 2356 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,519 psi | 57% | 1437 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 54,273 psi | 90% | 2382 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 53,954 psi | 90% | 2402 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 51,735 psi | 86% | 2474 fps | 99.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,387 psi | 85% | 2500 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 41,234 psi | 69% | 2323 fps | 96% |
| Rottweil R 901 | <<locked>> | 90% | 51,895 psi | 86% | 2336 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 53,896 psi | 90% | 2379 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 51,053 psi | 85% | 2402 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 47,152 psi | 78% | 2310 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 94% | 53,548 psi | 89% | 2411 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 51,024 psi | 85% | 2365 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 50,894 psi | 85% | 2313 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 53,461 psi | 89% | 2382 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,026 psi | 88% | 2457 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,780 psi | 89% | 2336 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 52,924 psi | 88% | 2385 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,272 psi | 89% | 2408 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 52,997 psi | 88% | 2300 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 51,880 psi | 86% | 2293 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 52,127 psi | 87% | 2385 fps | 99.9% |
| Somchem S335 | <<locked>> | 92% | 51,619 psi | 86% | 2300 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 52,214 psi | 87% | 2382 fps | 99.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,808 psi | 86% | 2402 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,231 psi | 62% | 2260 fps | 98.5% |
| Vihtavuori N130 | <<locked>> | 88% | 52,895 psi | 88% | 2277 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 52,779 psi | 88% | 2290 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 52,765 psi | 88% | 2356 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 54,273 psi | 90% | 2372 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,198 psi | 83% | 2349 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,179 psi | 73% | 2306 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 90% | 51,401 psi | 85% | 2349 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 96% | 52,359 psi | 87% | 2372 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 42,975 psi | 71% | 2310 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,585 psi | 76% | 2300 fps | 98.8% |
| Winchester 748 | <<locked>> | 92% | 53,853 psi | 89% | 2438 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 52,460 psi | 87% | 2415 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% | 38,783 psi | 64% | 2123 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,937 psi | 83% | 2346 fps | 98.5% |
| Accurate 2230 | <<locked>> | 80% | 50,082 psi | 83% | 2352 fps | 98.8% |
| Accurate 2460 | <<locked>> | 80% | 41,771 psi | 69% | 2205 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 31,111 psi | 52% | 2044 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,246 psi | 62% | 2165 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 29,486 psi | 49% | 2031 fps | 98.6% |
| Accurate 4350 | <<locked>> | 98% | 38,276 psi | 64% | 2257 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 47,181 psi | 78% | 2192 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,558 psi | 79% | 2208 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 35,665 psi | 59% | 2126 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 86% | 36,506 psi | 61% | 2129 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 46,760 psi | 78% | 2290 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,623 psi | 63% | 2142 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 36,143 psi | 60% | 2146 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,207 psi | 72% | 2303 fps | 98.7% |
| Alliant Power Pro 2000-MR | 38.2 gr | 86% | 38,943 psi | 65% | 2270 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,080 psi | 48% | 2014 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,179 psi | 73% | 2208 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 33,721 psi | 56% | 2110 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 96% | 37,536 psi | 62% | 2224 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 88% | 32,779 psi | 54% | 2152 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,934 psi | 76% | 2192 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 36,680 psi | 61% | 2165 fps | 95.2% |
| Bofors RP3 | <<locked>> | 82% | 30,298 psi | 50% | 2057 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,871 psi | 66% | 2142 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,143 psi | 58% | 2149 fps | 98.1% |
| Hodgdon CFE223 | 36.4 gr | 80% | 38,841 psi | 65% | 2254 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 80% | 42,598 psi | 71% | 2228 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,033 psi | 71% | 2247 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 38,363 psi | 64% | 2192 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 35,853 psi | 60% | 2136 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 31,966 psi | 53% | 2087 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,734 psi | 53% | 2096 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,367 psi | 42% | 1250 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,679 psi | 58% | 2100 fps | 96.5% |
| IMR 3031 | <<locked>> | 80% | 34,316 psi | 57% | 2139 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,852 psi | 56% | 2070 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 92% | 49,792 psi | 83% | 2303 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 44,976 psi | 75% | 2175 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 37,246 psi | 62% | 2218 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 32,358 psi | 54% | 2093 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 37,623 psi | 63% | 2142 fps | 98% |
| Lovex D073.5 | <<locked>> | 80% | 41,597 psi | 69% | 2208 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 33,605 psi | 56% | 2110 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 36,767 psi | 61% | 2083 fps | 96.6% |
| Lovex S062 | <<locked>> | 80% | 31,517 psi | 52% | 2037 fps | 96.4% |
| Lovex S065 | <<locked>> | 98% | 44,454 psi | 74% | 2270 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 49,559 psi | 82% | 2257 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,809 psi | 58% | 2090 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 34,766 psi | 58% | 2103 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 33,054 psi | 55% | 2100 fps | 95.5% |
| Norma URP | <<locked>> | 98% | 39,262 psi | 65% | 2257 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 84% | 34,722 psi | 58% | 2149 fps | 95.6% |
| Ramshot TAC | <<locked>> | 84% | 42,627 psi | 71% | 2224 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,100 psi | 60% | 2149 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,625 psi | 67% | 2178 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,788 psi | 43% | 1286 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,090 psi | 70% | 2215 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 47,601 psi | 79% | 2313 fps | 95.5% |
| ReloadSwiss RS 52 | 35.3 gr | 82% | 34,548 psi | 57% | 2182 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,151 psi | 45% | 2018 fps | 95.1% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 38,566 psi | 64% | 2274 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 38,624 psi | 64% | 2139 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 33,344 psi | 55% | 2054 fps | 97% |
| Rottweil R 903 | <<locked>> | 84% | 30,414 psi | 51% | 2054 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 44,454 psi | 74% | 2270 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,605 psi | 56% | 2110 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 31,517 psi | 52% | 2037 fps | 96.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,382 psi | 74% | 2221 fps | 99% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,804 psi | 78% | 2293 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 33,866 psi | 56% | 2136 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,628 psi | 74% | 2218 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 40,306 psi | 67% | 2198 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,258 psi | 57% | 2100 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,564 psi | 61% | 2064 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,849 psi | 50% | 1952 fps | 99% |
| Somchem S321 | <<locked>> | 80% | 39,900 psi | 66% | 2205 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 35,998 psi | 60% | 2070 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 34,882 psi | 58% | 2106 fps | 95.8% |
| Somchem S355 | <<locked>> | 84% | 31,691 psi | 53% | 2064 fps | 95.5% |
| Somchem S365 | <<locked>> | 92% | 29,196 psi | 49% | 2080 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 41,524 psi | 69% | 2129 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,579 psi | 61% | 2067 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,749 psi | 53% | 2047 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 32,866 psi | 55% | 2054 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 82% | 28,094 psi | 47% | 1969 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 96% | 38,856 psi | 65% | 2215 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 37,231 psi | 62% | 2133 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 31,546 psi | 52% | 2041 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 37,869 psi | 63% | 2221 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,054 psi | 55% | 2073 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 35,940 psi | 60% | 2165 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,170 psi | 55% | 2100 fps | 96.1% |
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 94 powders for .308 Win. loaded with the .310 | 200gr | Rhino Solid Shank. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,520 fps; across all powders the maximum-charge window runs from 1,407 fps to 2,520 fps. Accurate 4350 gives the best case fill at 100 %, and 94 of the 94 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 0.31" calls for a 1:13.0 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. with the .310 | 200gr | Rhino Solid Shank 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.