Load Specifications
Load data in caliber 8.5 x 63 R with .338 | 250gr | Nosler Partition RN bullet and 90 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 Reloder-17 and Hodgdon H414.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 48,863 psi | 89% | 2260 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 46,760 psi | 85% | 2280 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 48,472 psi | 88% | 2333 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,748 psi | 90% | 2313 fps | 96.1% |
| Accurate 4064 | <<locked>> | 88% | 47,036 psi | 85% | 2323 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 48,849 psi | 89% | 2425 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 84% | 48,022 psi | 87% | 2343 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 90% | 48,820 psi | 89% | 2343 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 47,181 psi | 86% | 2303 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 47,108 psi | 85% | 2283 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 46,789 psi | 85% | 2431 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 48,501 psi | 88% | 2362 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 49,081 psi | 89% | 2379 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 98% | 47,790 psi | 87% | 2428 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 94% | 48,240 psi | 88% | 2457 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,100 psi | 66% | 2247 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,798 psi | 72% | 2375 fps | 97.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 47,239 psi | 86% | 2352 fps | 99.1% |
| Bofors RP3 | <<locked>> | 90% | 48,443 psi | 88% | 2372 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 49,110 psi | 89% | 2343 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 49,153 psi | 89% | 2290 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 48,878 psi | 89% | 2369 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 49,719 psi | 90% | 2382 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 96% | 48,718 psi | 88% | 2421 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 94% | 49,777 psi | 90% | 2388 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 84% | 48,486 psi | 88% | 2352 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,862 psi | 85% | 2365 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 46,905 psi | 85% | 2375 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 96% | 48,921 psi | 89% | 2444 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 64% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 49,313 psi | 89% | 2352 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 47,892 psi | 87% | 2339 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 48,457 psi | 88% | 2329 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,559 psi | 88% | 2306 fps | 96.8% |
| IMR 4350 | <<locked>> | 98% | 49,124 psi | 89% | 2365 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,008 psi | 87% | 2326 fps | 96.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,371 psi | 90% | 2415 fps | 99.3% |
| IMR 4895 | <<locked>> | 86% | 47,123 psi | 86% | 2359 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 82% | 47,181 psi | 86% | 2303 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 46,862 psi | 85% | 2323 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 47,993 psi | 87% | 2283 fps | 99.7% |
| Lovex S062 | <<locked>> | 88% | 48,153 psi | 87% | 2329 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 47,326 psi | 86% | 2326 fps | 97.9% |
| Lovex S070 | <<locked>> | 96% | 47,688 psi | 87% | 2352 fps | 96.9% |
| Norma 201 | <<locked>> | 86% | 49,792 psi | 90% | 2339 fps | 100% |
| Norma 202 | <<locked>> | 84% | 47,340 psi | 86% | 2303 fps | 100% |
| Norma 203B | <<locked>> | 88% | 48,312 psi | 88% | 2369 fps | 99.7% |
| Norma URP | <<locked>> | 98% | 48,211 psi | 87% | 2415 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 88% | 48,124 psi | 87% | 2388 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 98% | 47,268 psi | 86% | 2408 fps | 97.6% |
| Ramshot TAC | <<locked>> | 82% | 47,065 psi | 85% | 2310 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 84% | 49,647 psi | 90% | 2375 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,737 psi | 65% | 1476 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,920 psi | 85% | 2320 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 48,631 psi | 88% | 2428 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 48,196 psi | 87% | 2461 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 48,283 psi | 88% | 2444 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 48,718 psi | 88% | 2464 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 82% | 48,153 psi | 87% | 2283 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 47,326 psi | 86% | 2297 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 48,356 psi | 88% | 2365 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 94% | 49,110 psi | 89% | 2343 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 47,326 psi | 86% | 2326 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 46,862 psi | 85% | 2323 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 48,153 psi | 87% | 2329 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 47,688 psi | 87% | 2352 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 49,835 psi | 90% | 2418 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 48,414 psi | 88% | 2336 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 49,211 psi | 89% | 2359 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 48,588 psi | 88% | 2251 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 48,414 psi | 88% | 2254 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,195 psi | 86% | 2283 fps | 96.5% |
| Somchem S335 | <<locked>> | 84% | 47,964 psi | 87% | 2251 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 48,196 psi | 87% | 2333 fps | 99.6% |
| Somchem S355 | <<locked>> | 92% | 48,994 psi | 89% | 2365 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,992 psi | 83% | 2418 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 48,747 psi | 88% | 2241 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 49,806 psi | 90% | 2310 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 47,659 psi | 86% | 2287 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 47,079 psi | 85% | 2306 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 47,601 psi | 86% | 2369 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 82% | 47,268 psi | 86% | 2300 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 48,878 psi | 89% | 2326 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 49,792 psi | 90% | 2418 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,798 psi | 70% | 2313 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 47,863 psi | 87% | 2352 fps | 99.9% |
| Winchester 748 | <<locked>> | 82% | 46,702 psi | 85% | 2339 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 48,718 psi | 88% | 2421 fps | 97.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,097 psi | 58% | 2234 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 48,834 psi | 89% | 2365 fps | 99.9% |
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% | 45,977 psi | 83% | 2221 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,551 psi | 70% | 2162 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,324 psi | 82% | 2290 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,659 psi | 85% | 2267 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 36,448 psi | 66% | 2156 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 32,285 psi | 59% | 2136 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 42,177 psi | 77% | 2251 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 36,056 psi | 65% | 2126 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,251 psi | 80% | 2257 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 44,179 psi | 80% | 2244 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,290 psi | 69% | 2277 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,476 psi | 64% | 2146 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,000 psi | 69% | 2195 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 33,214 psi | 60% | 2149 fps | 95.6% |
| Alliant Reloder-17 | 48.6 gr | 80% | 30,501 psi | 55% | 2113 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 28,384 psi | 52% | 2064 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 96% | 34,722 psi | 63% | 2267 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,321 psi | 75% | 2257 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 34,795 psi | 63% | 2146 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 43,598 psi | 79% | 2254 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,108 psi | 84% | 2247 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,902 psi | 78% | 2280 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 35,723 psi | 65% | 2146 fps | 95.9% |
| Hodgdon H414 | 54.7 gr | 92% | 42,728 psi | 78% | 2326 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 92% | 46,920 psi | 85% | 2346 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 42,569 psi | 77% | 2260 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,601 psi | 52% | 2021 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,450 psi | 70% | 2238 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 94% | 45,847 psi | 83% | 2395 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,237 psi | 48% | 1283 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,002 psi | 74% | 2221 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 42,177 psi | 77% | 2257 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,855 psi | 69% | 2156 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 42,989 psi | 78% | 2218 fps | 95.4% |
| IMR 4350 | <<locked>> | 96% | 46,093 psi | 84% | 2320 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 42,743 psi | 78% | 2241 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 31,575 psi | 57% | 2103 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 38,914 psi | 71% | 2221 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 44,251 psi | 80% | 2257 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 40,973 psi | 74% | 2234 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,685 psi | 77% | 2198 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 37,695 psi | 68% | 2159 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 37,057 psi | 67% | 2149 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 42,177 psi | 77% | 2260 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 41,423 psi | 75% | 2211 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 41,698 psi | 76% | 2221 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,391 psi | 68% | 2185 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 33,054 psi | 60% | 2142 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 36,883 psi | 67% | 2198 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 39,088 psi | 71% | 2267 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 44,208 psi | 80% | 2267 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,439 psi | 79% | 2280 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,556 psi | 48% | 1316 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,307 psi | 75% | 2228 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,537 psi | 72% | 2280 fps | 98.2% |
| ReloadSwiss RS 60 | 48.6 gr | 80% | 32,445 psi | 59% | 2172 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,461 psi | 63% | 2201 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,275 psi | 68% | 2257 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 45,382 psi | 82% | 2244 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,537 psi | 72% | 2172 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 32,779 psi | 59% | 2096 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 43,598 psi | 79% | 2254 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,057 psi | 67% | 2149 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,973 psi | 74% | 2234 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,695 psi | 68% | 2159 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 92% | 42,177 psi | 77% | 2260 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,692 psi | 61% | 2139 fps | 97% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,279 psi | 77% | 2241 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,640 psi | 74% | 2224 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,946 psi | 78% | 2169 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,563 psi | 65% | 2060 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 41,234 psi | 75% | 2188 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 42,453 psi | 77% | 2172 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,076 psi | 76% | 2241 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 33,765 psi | 61% | 2106 fps | 97.7% |
| Somchem S365 | <<locked>> | 82% | 25,976 psi | 47% | 2005 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 80% | 43,207 psi | 78% | 2165 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,740 psi | 70% | 2156 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,363 psi | 71% | 2162 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,010 psi | 58% | 2051 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 32,474 psi | 59% | 2100 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 44,237 psi | 80% | 2254 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 37,782 psi | 69% | 2156 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 33,866 psi | 61% | 2146 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 30,081 psi | 55% | 2129 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,587 psi | 52% | 1988 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 43,671 psi | 79% | 2293 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 42,728 psi | 78% | 2326 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 28,369 psi | 51% | 2126 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,176 psi | 73% | 2231 fps | 99.1% |
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 107 powders for 8.5 x 63 R loaded with the .338 | 250gr | Nosler Partition RN. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,464 fps; across all powders the maximum-charge window runs from 1,440 fps to 2,464 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 Reloder-17, Hodgdon H414 rank at the top here: for 8.5 x 63 R with the .338 | 250gr | Nosler Partition RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.