Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:250 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:8.5 x 63 load data
Case Length (l3):2.48"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:75.5 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:15.0
Load data in caliber 8.5 x 63 with .338 | 250gr | Rhino Solid Shank bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and Alliant Reloder-17.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 54,781 psi | 88% | 2326 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,026 psi | 85% | 2352 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 56,014 psi | 90% | 2388 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,723 psi | 88% | 2408 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,796 psi | 89% | 2392 fps | 97.2% |
| Accurate 4064 | <<locked>> | 94% | 55,709 psi | 89% | 2428 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,285 psi | 82% | 2454 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 53,693 psi | 86% | 2418 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 54,447 psi | 87% | 2415 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 88% | 56,289 psi | 90% | 2418 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 53,127 psi | 85% | 2352 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,462 psi | 87% | 2461 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,866 psi | 85% | 2520 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,012 psi | 87% | 2434 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,534 psi | 87% | 2329 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,984 psi | 88% | 2454 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,024 psi | 80% | 2457 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,317 psi | 87% | 2539 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,607 psi | 57% | 2234 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,102 psi | 63% | 2356 fps | 96.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,202 psi | 90% | 2316 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,156 psi | 85% | 2431 fps | 99.6% |
| Bofors RP3 | <<locked>> | 94% | 54,563 psi | 87% | 2448 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 54,853 psi | 88% | 2418 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,853 psi | 88% | 2359 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,056 psi | 88% | 2444 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,417 psi | 86% | 2484 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 53,519 psi | 86% | 2369 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,215 psi | 87% | 2392 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,912 psi | 90% | 2461 fps | 99.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,549 psi | 87% | 2500 fps | 98% |
| Hodgdon H4350 | <<locked>> | 98% | 55,912 psi | 90% | 2467 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 88% | 54,244 psi | 87% | 2428 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,398 psi | 74% | 2356 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 52,910 psi | 85% | 2454 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,622 psi | 89% | 2533 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,273 psi | 57% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,259 psi | 89% | 2425 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 53,925 psi | 86% | 2408 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,056 psi | 87% | 2402 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,346 psi | 87% | 2382 fps | 97.7% |
| IMR 4198 | <<locked>> | 82% | 54,737 psi | 88% | 2290 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,459 psi | 83% | 2395 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,722 psi | 86% | 2405 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,921 psi | 78% | 2405 fps | 99.2% |
| IMR 4895 | <<locked>> | 92% | 56,347 psi | 90% | 2480 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 56,289 psi | 90% | 2418 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 52,634 psi | 84% | 2359 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 52,924 psi | 85% | 2395 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,606 psi | 86% | 2356 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 53,621 psi | 86% | 2395 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 2441 fps | 99% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,243 psi | 85% | 2425 fps | 97.9% |
| Norma 201 | <<locked>> | 90% | 55,753 psi | 89% | 2411 fps | 100% |
| Norma 202 | <<locked>> | 90% | 56,289 psi | 90% | 2411 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,128 psi | 87% | 2444 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 50,807 psi | 81% | 2444 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 92% | 54,317 psi | 87% | 2467 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,821 psi | 80% | 2441 fps | 97.9% |
| Ramshot TAC | <<locked>> | 86% | 53,084 psi | 85% | 2395 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,898 psi | 90% | 2454 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,708 psi | 86% | 2379 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,766 psi | 57% | 1470 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,753 psi | 89% | 2398 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 56,362 psi | 90% | 2448 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 55,100 psi | 88% | 2510 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,230 psi | 87% | 2539 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,923 psi | 82% | 2477 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,474 psi | 83% | 2500 fps | 99% |
| Rottweil R 901 | <<locked>> | 86% | 53,751 psi | 86% | 2352 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 56,246 psi | 90% | 2408 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 54,128 psi | 87% | 2438 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 54,853 psi | 88% | 2418 fps | 97.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 56,014 psi | 90% | 2441 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 88% | 52,924 psi | 85% | 2395 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,621 psi | 86% | 2395 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,243 psi | 85% | 2425 fps | 97.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,550 psi | 89% | 2375 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,941 psi | 90% | 2493 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,463 psi | 89% | 2346 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,708 psi | 88% | 2418 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,376 psi | 89% | 2438 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,201 psi | 87% | 2316 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,099 psi | 87% | 2316 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 53,011 psi | 85% | 2356 fps | 97.5% |
| Somchem S321 | <<locked>> | 84% | 53,722 psi | 86% | 2405 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,592 psi | 86% | 2316 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,273 psi | 87% | 2411 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 54,592 psi | 88% | 2434 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,339 psi | 73% | 2402 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,302 psi | 87% | 2287 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,317 psi | 87% | 2303 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,680 psi | 89% | 2375 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,142 psi | 85% | 2352 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,333 psi | 90% | 2418 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,388 psi | 86% | 2441 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 53,359 psi | 86% | 2375 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 54,723 psi | 88% | 2392 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,489 psi | 84% | 2451 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,130 psi | 61% | 2297 fps | 97.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,186 psi | 87% | 2431 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 56,275 psi | 90% | 2457 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,868 psi | 88% | 2503 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,705 psi | 51% | 2218 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 90% | 55,071 psi | 88% | 2444 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 45,542 psi | 73% | 2211 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,647 psi | 80% | 2310 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,116 psi | 61% | 2152 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,759 psi | 72% | 2277 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,224 psi | 74% | 2254 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 36,042 psi | 58% | 2146 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 31,807 psi | 51% | 2123 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 41,872 psi | 67% | 2241 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 80% | 35,549 psi | 57% | 2110 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,888 psi | 70% | 2247 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 43,685 psi | 70% | 2234 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,169 psi | 82% | 2418 fps | 100% |
| Alliant Power Pro 2000-MR | 48.8 gr | 80% | 37,797 psi | 61% | 2260 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,940 psi | 56% | 2133 fps | 98.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,300 psi | 82% | 2290 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,666 psi | 60% | 2185 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,764 psi | 53% | 2136 fps | 95.2% |
| Alliant Reloder-17 | 48 gr | 80% | 30,095 psi | 48% | 2100 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,718 psi | 48% | 2096 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,608 psi | 59% | 2303 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,837 psi | 85% | 2277 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,814 psi | 65% | 2244 fps | 97.9% |
| Bofors RP3 | <<locked>> | 80% | 34,432 psi | 55% | 2136 fps | 98.3% |
| Bofors RP7 | <<locked>> | 92% | 45,788 psi | 73% | 2287 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,788 psi | 73% | 2238 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,337 psi | 68% | 2267 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,456 psi | 74% | 2385 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 50,009 psi | 80% | 2323 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,807 psi | 81% | 2349 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,418 psi | 57% | 2136 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 92% | 42,061 psi | 67% | 2310 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 94% | 49,313 psi | 79% | 2375 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 42,192 psi | 68% | 2251 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,195 psi | 45% | 2005 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,942 psi | 61% | 2224 fps | 99% |
| Hodgdon Superformance | <<locked>> | 94% | 45,063 psi | 72% | 2375 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,165 psi | 42% | 1276 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,437 psi | 65% | 2208 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 41,481 psi | 67% | 2244 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,304 psi | 60% | 2139 fps | 97.6% |
| IMR 4166 Enduron | <<locked>> | 82% | 42,467 psi | 68% | 2201 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 51,735 psi | 83% | 2254 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 45,455 psi | 73% | 2306 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 42,279 psi | 68% | 2228 fps | 95% |
| IMR 4831 | <<locked>> | 88% | 33,112 psi | 53% | 2133 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 38,551 psi | 62% | 2211 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 80% | 43,888 psi | 70% | 2247 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 49,298 psi | 79% | 2316 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,625 psi | 65% | 2224 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,134 psi | 68% | 2185 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 37,115 psi | 60% | 2146 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 36,579 psi | 59% | 2136 fps | 95% |
| Lovex S070 | <<locked>> | 92% | 41,713 psi | 67% | 2247 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 41,060 psi | 66% | 2201 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 41,104 psi | 66% | 2205 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,057 psi | 59% | 2175 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 32,648 psi | 52% | 2129 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,434 psi | 58% | 2185 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 38,696 psi | 62% | 2254 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 43,729 psi | 70% | 2251 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,946 psi | 69% | 2267 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,369 psi | 76% | 2290 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,469 psi | 42% | 1309 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,211 psi | 79% | 2316 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,828 psi | 65% | 2215 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,160 psi | 63% | 2270 fps | 98.1% |
| ReloadSwiss RS 60 | 48 gr | 80% | 32,053 psi | 51% | 2156 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,040 psi | 55% | 2185 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 36,927 psi | 59% | 2241 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 44,991 psi | 72% | 2234 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,001 psi | 63% | 2159 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 32,430 psi | 52% | 2087 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 45,788 psi | 73% | 2287 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 36,579 psi | 59% | 2136 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,625 psi | 65% | 2224 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,115 psi | 60% | 2146 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 41,713 psi | 67% | 2247 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,938 psi | 83% | 2333 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,417 psi | 54% | 2129 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,127 psi | 84% | 2306 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,742 psi | 67% | 2228 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,335 psi | 65% | 2215 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,569 psi | 68% | 2162 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,201 psi | 56% | 2051 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,642 psi | 70% | 2224 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 47,239 psi | 76% | 2316 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 42,076 psi | 67% | 2162 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,611 psi | 67% | 2228 fps | 98.8% |
| Somchem S355 | <<locked>> | 80% | 33,431 psi | 54% | 2093 fps | 97.5% |
| Somchem S365 | <<locked>> | 82% | 25,759 psi | 41% | 1995 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 48,109 psi | 77% | 2211 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,786 psi | 69% | 2156 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,305 psi | 61% | 2146 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,015 psi | 63% | 2152 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,705 psi | 51% | 2041 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 34,069 psi | 55% | 2129 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,874 psi | 70% | 2244 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 37,478 psi | 60% | 2146 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 33,431 psi | 54% | 2133 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 94% | 31,517 psi | 51% | 2159 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,297 psi | 45% | 1978 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 43,091 psi | 69% | 2280 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 42,322 psi | 68% | 2313 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,762 psi | 48% | 2162 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,624 psi | 64% | 2218 fps | 99% |
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 105 powders for 8.5 x 63 loaded with the .338 | 250gr | Rhino Solid Shank. Alliant Reloder-17 delivers the highest muzzle velocity at 2,539 fps; across all powders the maximum-charge window runs from 1,434 fps to 2,539 fps. Accurate 4350 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for 8.5 x 63 with the .338 | 250gr | 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.