Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:265 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:1:11.5
Load data in caliber 8.5 x 63 with .338 | 265gr | Nosler AccuBond Long Range bullet and 107 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 ReloadSwiss RS 60.
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>> | 88% | 54,897 psi | 88% | 2215 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 53,359 psi | 86% | 2241 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,854 psi | 90% | 2274 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,737 psi | 88% | 2293 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,246 psi | 90% | 2274 fps | 97% |
| Accurate 4064 | <<locked>> | 96% | 55,419 psi | 89% | 2310 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,326 psi | 76% | 2287 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 54,360 psi | 87% | 2165 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,781 psi | 88% | 2185 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,867 psi | 86% | 2303 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 54,549 psi | 87% | 2297 fps | 99.8% |
| ADI AR 2219 | <<locked>> | 82% | 55,303 psi | 89% | 2270 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 53,272 psi | 85% | 2264 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 53,069 psi | 85% | 2238 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,766 psi | 88% | 2346 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 53,011 psi | 85% | 2398 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 53,780 psi | 86% | 2313 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,911 psi | 88% | 2218 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,694 psi | 88% | 2333 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,123 psi | 76% | 2293 fps | 99% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,244 psi | 87% | 2415 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,257 psi | 53% | 2077 fps | 97% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,534 psi | 86% | 2172 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 53,316 psi | 85% | 2316 fps | 99.5% |
| Bofors RP3 | <<locked>> | 96% | 54,317 psi | 87% | 2329 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 54,882 psi | 88% | 2297 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,303 psi | 89% | 2247 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,332 psi | 89% | 2333 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 53,490 psi | 86% | 2365 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 53,940 psi | 86% | 2257 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,911 psi | 88% | 2283 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,724 psi | 89% | 2339 fps | 99.4% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 50,749 psi | 81% | 2329 fps | 97.2% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 55,622 psi | 89% | 2343 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 90% | 54,317 psi | 87% | 2310 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,047 psi | 69% | 2195 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 52,808 psi | 85% | 2336 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 51,851 psi | 83% | 2356 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,911 psi | 56% | 1345 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,448 psi | 89% | 2306 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 53,577 psi | 86% | 2290 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,143 psi | 87% | 2283 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,955 psi | 88% | 2270 fps | 97.6% |
| IMR 4198 | <<locked>> | 84% | 55,317 psi | 89% | 2182 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 48,269 psi | 77% | 2234 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,911 psi | 86% | 2287 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,324 psi | 73% | 2244 fps | 98.6% |
| IMR 4895 | <<locked>> | 94% | 56,043 psi | 90% | 2356 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 53,272 psi | 85% | 2264 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 52,968 psi | 85% | 2251 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 56,260 psi | 90% | 2320 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,896 psi | 86% | 2241 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 53,592 psi | 86% | 2280 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,562 psi | 84% | 2277 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,777 psi | 80% | 2260 fps | 97.1% |
| Norma 201 | <<locked>> | 92% | 55,970 psi | 90% | 2293 fps | 100% |
| Norma 202 | <<locked>> | 92% | 56,144 psi | 90% | 2293 fps | 100% |
| Norma 203B | <<locked>> | 94% | 53,795 psi | 86% | 2323 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 47,065 psi | 75% | 2280 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 94% | 54,259 psi | 87% | 2349 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,601 psi | 75% | 2277 fps | 97.1% |
| Ramshot TAC | <<locked>> | 88% | 53,447 psi | 86% | 2280 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,999 psi | 90% | 2336 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,230 psi | 87% | 2267 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,186 psi | 56% | 1375 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 56,231 psi | 90% | 2287 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 56,304 psi | 90% | 2323 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,650 psi | 88% | 2385 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,099 psi | 87% | 2415 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,804 psi | 75% | 2303 fps | 98.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,906 psi | 77% | 2323 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 88% | 53,766 psi | 86% | 2238 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 56,217 psi | 90% | 2290 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 53,853 psi | 86% | 2316 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 54,882 psi | 88% | 2297 fps | 97.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,562 psi | 84% | 2277 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,260 psi | 90% | 2320 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,592 psi | 86% | 2280 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,777 psi | 80% | 2260 fps | 97.1% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 56,057 psi | 90% | 2264 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,564 psi | 89% | 2283 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,753 psi | 89% | 2372 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,912 psi | 90% | 2234 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,926 psi | 88% | 2300 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,361 psi | 89% | 2316 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,795 psi | 88% | 2205 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 54,288 psi | 87% | 2205 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 52,982 psi | 85% | 2238 fps | 97.3% |
| Somchem S321 | <<locked>> | 86% | 54,186 psi | 87% | 2293 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 53,795 psi | 86% | 2208 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,534 psi | 87% | 2297 fps | 99.9% |
| Somchem S355 | <<locked>> | 98% | 54,607 psi | 88% | 2316 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,989 psi | 67% | 2241 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 86% | 54,476 psi | 87% | 2175 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,781 psi | 88% | 2195 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,434 psi | 89% | 2257 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 53,388 psi | 86% | 2241 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,999 psi | 90% | 2297 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,806 psi | 80% | 2280 fps | 99% |
| Vihtavuori N530 | <<locked>> | 88% | 53,417 psi | 86% | 2260 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 54,897 psi | 88% | 2280 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,675 psi | 78% | 2283 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,157 psi | 56% | 2136 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,705 psi | 81% | 2270 fps | 99.9% |
| Winchester 748 | <<locked>> | 90% | 56,246 psi | 90% | 2339 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 51,097 psi | 82% | 2333 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,303 psi | 89% | 2329 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% | 43,047 psi | 69% | 2070 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,630 psi | 75% | 2159 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,578 psi | 57% | 2011 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,843 psi | 67% | 2126 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 46,383 psi | 74% | 2146 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 33,649 psi | 54% | 2005 fps | 99.9% |
| Accurate 4350 | <<locked>> | 90% | 33,605 psi | 54% | 2064 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 51,445 psi | 82% | 2133 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,851 psi | 83% | 2152 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,523 psi | 63% | 2093 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 33,736 psi | 54% | 1975 fps | 96.2% |
| ADI AR 2219 | <<locked>> | 80% | 51,648 psi | 83% | 2231 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,568 psi | 67% | 2100 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 40,727 psi | 65% | 2090 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,240 psi | 77% | 2260 fps | 99.9% |
| Alliant Power Pro 2000-MR | 43.5 gr | 80% | 35,433 psi | 57% | 2103 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,779 psi | 53% | 1991 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,762 psi | 78% | 2146 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,433 psi | 57% | 2041 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 32,895 psi | 53% | 2034 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 28,369 psi | 45% | 1955 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 29,544 psi | 47% | 1991 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,299 psi | 81% | 2136 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,305 psi | 61% | 2093 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 32,068 psi | 51% | 1991 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 45,701 psi | 73% | 2172 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,395 psi | 70% | 2090 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,508 psi | 63% | 2116 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,555 psi | 70% | 2228 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 47,224 psi | 76% | 2175 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,022 psi | 77% | 2201 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 35,418 psi | 57% | 2034 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 41,989 psi | 67% | 2198 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 96% | 49,240 psi | 79% | 2257 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 39,842 psi | 64% | 2103 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 28,137 psi | 45% | 1909 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,607 psi | 57% | 2077 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 45,237 psi | 73% | 2260 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,063 psi | 42% | 1201 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,174 psi | 61% | 2060 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 38,899 psi | 62% | 2100 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,346 psi | 57% | 1998 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 42,786 psi | 69% | 2096 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 49,052 psi | 79% | 2110 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 45,411 psi | 73% | 2192 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 44,802 psi | 72% | 2159 fps | 95.5% |
| IMR 4831 | <<locked>> | 90% | 32,895 psi | 53% | 2031 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 36,245 psi | 58% | 2064 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 41,568 psi | 67% | 2100 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 46,253 psi | 74% | 2165 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,884 psi | 61% | 2077 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 40,205 psi | 64% | 2044 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 35,128 psi | 56% | 2005 fps | 98.6% |
| Lovex S065 | <<locked>> | 90% | 38,943 psi | 62% | 2077 fps | 95.6% |
| Lovex S070 | <<locked>> | 94% | 41,452 psi | 66% | 2136 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 38,769 psi | 62% | 2057 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 38,798 psi | 62% | 2064 fps | 100% |
| Norma 203B | <<locked>> | 80% | 34,824 psi | 56% | 2031 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 32,503 psi | 52% | 2024 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 34,040 psi | 55% | 2037 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 96% | 40,872 psi | 66% | 2185 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 41,336 psi | 66% | 2103 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,495 psi | 65% | 2119 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,759 psi | 72% | 2139 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 42% | 1227 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,586 psi | 75% | 2169 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 40,944 psi | 66% | 2110 fps | 95.4% |
| ReloadSwiss RS 52 | 42.2 gr | 80% | 36,434 psi | 58% | 2116 fps | 97.3% |
| ReloadSwiss RS 60 | 42.9 gr | 80% | 30,211 psi | 48% | 2011 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 33,750 psi | 54% | 2080 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 36,941 psi | 59% | 2133 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 42,511 psi | 68% | 2090 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,869 psi | 59% | 2018 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 30,182 psi | 48% | 1946 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 94% | 45,701 psi | 73% | 2172 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 38,943 psi | 62% | 2077 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,884 psi | 61% | 2077 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 35,128 psi | 56% | 2005 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 41,452 psi | 66% | 2136 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,979 psi | 79% | 2178 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,040 psi | 83% | 2241 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,328 psi | 50% | 1985 fps | 96% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,226 psi | 79% | 2159 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,160 psi | 63% | 2077 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,971 psi | 61% | 2067 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,263 psi | 65% | 2018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,127 psi | 53% | 1916 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 43,323 psi | 69% | 2113 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 44,440 psi | 71% | 2165 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 39,885 psi | 64% | 2024 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,044 psi | 63% | 2080 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 31,357 psi | 50% | 1955 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 25,643 psi | 41% | 1896 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 45,600 psi | 73% | 2070 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,422 psi | 65% | 2018 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,781 psi | 57% | 2005 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,637 psi | 59% | 2014 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,617 psi | 47% | 1903 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 34,113 psi | 55% | 2028 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 41,350 psi | 66% | 2096 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 35,288 psi | 57% | 2008 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 33,127 psi | 53% | 2028 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 31,111 psi | 50% | 2051 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 28,384 psi | 46% | 1883 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 40,495 psi | 65% | 2133 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 41,989 psi | 67% | 2198 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,115 psi | 60% | 2070 fps | 98.5% |
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 118 powders for 8.5 x 63 loaded with the .338 | 265gr | Nosler AccuBond Long Range. Alliant Reloder-17 delivers the highest muzzle velocity at 2,415 fps; across all powders the maximum-charge window runs from 1,345 fps to 2,415 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 265.0 gr projectile in 0.338" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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, ReloadSwiss RS 60 rank at the top here: for 8.5 x 63 with the .338 | 265gr | Nosler AccuBond Long Range 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.