Load Specifications
Load data in caliber 8.5 x 63 R with .338 | 265gr | Nosler AccuBond Long Range bullet and 94 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 Alliant Power Pro 2000-MR.
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>> | 84% | 48,515 psi | 88% | 2142 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 49,864 psi | 90% | 2201 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 49,081 psi | 89% | 2198 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 47,732 psi | 87% | 2208 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 49,530 psi | 90% | 2188 fps | 95.7% |
| Accurate 4064 | <<locked>> | 92% | 48,994 psi | 89% | 2234 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,326 psi | 86% | 2287 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 86% | 47,456 psi | 86% | 2218 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 92% | 48,341 psi | 88% | 2215 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 46,905 psi | 85% | 2182 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 49,748 psi | 90% | 2201 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 49,516 psi | 90% | 2349 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 47,587 psi | 86% | 2234 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 48,457 psi | 88% | 2251 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,123 psi | 86% | 2293 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 96% | 47,355 psi | 86% | 2323 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,257 psi | 60% | 2077 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 46,746 psi | 85% | 2228 fps | 98.8% |
| Bofors RP3 | <<locked>> | 92% | 47,529 psi | 86% | 2244 fps | 99.9% |
| Bofors RP7 | <<locked>> | 96% | 48,544 psi | 88% | 2211 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 49,197 psi | 89% | 2172 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 48,385 psi | 88% | 2247 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 46,615 psi | 85% | 2274 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 92% | 48,921 psi | 89% | 2251 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 98% | 47,718 psi | 87% | 2287 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 86% | 47,834 psi | 87% | 2224 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,047 psi | 78% | 2195 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 49,327 psi | 90% | 2293 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 48,443 psi | 88% | 2310 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,911 psi | 63% | 1345 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 49,110 psi | 89% | 2228 fps | 99.8% |
| IMR 3031 | <<locked>> | 86% | 47,413 psi | 86% | 2218 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 47,877 psi | 87% | 2201 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 48,457 psi | 88% | 2182 fps | 96.4% |
| IMR 4350ᴾ | <<locked>> | 100% | 48,269 psi | 88% | 2234 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,543 psi | 86% | 2201 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,324 psi | 82% | 2244 fps | 98.6% |
| IMR 4895 | <<locked>> | 90% | 49,647 psi | 90% | 2277 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 84% | 46,905 psi | 85% | 2182 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 49,501 psi | 90% | 2208 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 49,385 psi | 90% | 2241 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 47,863 psi | 87% | 2162 fps | 99.6% |
| Lovex S062 | <<locked>> | 90% | 47,485 psi | 86% | 2201 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 49,559 psi | 90% | 2238 fps | 98% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,777 psi | 90% | 2260 fps | 97.1% |
| Norma 201 | <<locked>> | 88% | 49,545 psi | 90% | 2218 fps | 100% |
| Norma 202 | <<locked>> | 88% | 49,705 psi | 90% | 2221 fps | 100% |
| Norma 203B | <<locked>> | 90% | 47,674 psi | 87% | 2241 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 47,065 psi | 85% | 2280 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 90% | 47,442 psi | 86% | 2260 fps | 99.5% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,601 psi | 85% | 2277 fps | 97.1% |
| Ramshot TAC | <<locked>> | 84% | 47,036 psi | 85% | 2192 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 49,110 psi | 89% | 2247 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 82% | 47,703 psi | 87% | 2182 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,186 psi | 64% | 1375 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 49,559 psi | 90% | 2208 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,617 psi | 90% | 2238 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 47,703 psi | 87% | 2297 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 47,514 psi | 86% | 2329 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,804 psi | 85% | 2303 fps | 98.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,906 psi | 87% | 2323 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 84% | 48,008 psi | 87% | 2169 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 49,821 psi | 90% | 2211 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 47,427 psi | 86% | 2238 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 96% | 48,544 psi | 88% | 2211 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 49,559 psi | 90% | 2238 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 88% | 49,385 psi | 90% | 2241 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 47,485 psi | 86% | 2201 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,777 psi | 90% | 2260 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 49,052 psi | 89% | 2287 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 47,993 psi | 87% | 2211 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 48,834 psi | 89% | 2234 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 48,341 psi | 88% | 2129 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 47,892 psi | 87% | 2133 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 49,632 psi | 90% | 2198 fps | 96.7% |
| Somchem S321 | <<locked>> | 82% | 47,500 psi | 86% | 2208 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 47,761 psi | 87% | 2136 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 47,747 psi | 87% | 2211 fps | 99.5% |
| Somchem S355 | <<locked>> | 94% | 48,312 psi | 88% | 2238 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,989 psi | 76% | 2241 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 82% | 48,530 psi | 88% | 2106 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 48,443 psi | 88% | 2123 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 49,139 psi | 89% | 2188 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 47,210 psi | 86% | 2169 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 49,400 psi | 90% | 2221 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,806 psi | 90% | 2280 fps | 99% |
| Vihtavuori N530 | <<locked>> | 84% | 47,166 psi | 86% | 2182 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 90% | 48,385 psi | 88% | 2205 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,675 psi | 88% | 2283 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,157 psi | 64% | 2136 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 47,500 psi | 86% | 2228 fps | 99.8% |
| Winchester 748 | <<locked>> | 86% | 49,429 psi | 90% | 2260 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 47,718 psi | 87% | 2287 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 88% | 48,312 psi | 88% | 2244 fps | 99.8% |
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 | 78% | 2070 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,630 psi | 85% | 2159 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,578 psi | 65% | 2011 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,843 psi | 76% | 2126 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 46,383 psi | 84% | 2146 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 33,649 psi | 61% | 2005 fps | 99.9% |
| Accurate 4350 | <<locked>> | 90% | 33,605 psi | 61% | 2064 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 39,523 psi | 72% | 2093 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 33,736 psi | 61% | 1975 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,568 psi | 75% | 2100 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 40,727 psi | 74% | 2090 fps | 100% |
| Alliant Power Pro 2000-MR | 43.5 gr | 80% | 35,433 psi | 64% | 2103 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,779 psi | 59% | 1991 fps | 97.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,433 psi | 64% | 2041 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 32,895 psi | 60% | 2034 fps | 95.1% |
| Alliant Reloder-17 | 42.9 gr | 80% | 28,369 psi | 51% | 1955 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 29,544 psi | 54% | 1991 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,305 psi | 70% | 2093 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 32,068 psi | 58% | 1991 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 45,701 psi | 83% | 2172 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,395 psi | 79% | 2090 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,508 psi | 72% | 2116 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,555 psi | 79% | 2228 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 82% | 35,418 psi | 64% | 2034 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 41,989 psi | 76% | 2198 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 39,842 psi | 72% | 2103 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 28,137 psi | 51% | 1909 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,607 psi | 65% | 2077 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 45,237 psi | 82% | 2260 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,063 psi | 47% | 1201 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,174 psi | 69% | 2060 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 38,899 psi | 71% | 2100 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,346 psi | 64% | 1998 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 42,786 psi | 78% | 2096 fps | 95.1% |
| IMR 4350 | <<locked>> | 98% | 45,411 psi | 82% | 2192 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 44,802 psi | 81% | 2159 fps | 95.5% |
| IMR 4831 | <<locked>> | 90% | 32,895 psi | 60% | 2031 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 36,245 psi | 66% | 2064 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 41,568 psi | 75% | 2100 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 46,253 psi | 84% | 2165 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,884 psi | 69% | 2077 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 40,205 psi | 73% | 2044 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 35,128 psi | 64% | 2005 fps | 98.6% |
| Lovex S065 | <<locked>> | 90% | 38,943 psi | 71% | 2077 fps | 95.6% |
| Lovex S070 | <<locked>> | 94% | 41,452 psi | 75% | 2136 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 38,769 psi | 70% | 2057 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 38,798 psi | 70% | 2064 fps | 100% |
| Norma 203B | <<locked>> | 80% | 34,824 psi | 63% | 2031 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 32,503 psi | 59% | 2024 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 34,040 psi | 62% | 2037 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 96% | 40,872 psi | 74% | 2185 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 41,336 psi | 75% | 2103 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,495 psi | 73% | 2119 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,759 psi | 81% | 2139 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 47% | 1227 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,586 psi | 85% | 2169 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 40,944 psi | 74% | 2110 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,434 psi | 66% | 2116 fps | 97.3% |
| ReloadSwiss RS 60 | 42.9 gr | 80% | 30,211 psi | 55% | 2011 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 33,750 psi | 61% | 2080 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 36,941 psi | 67% | 2133 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 42,511 psi | 77% | 2090 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,869 psi | 67% | 2018 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 30,182 psi | 55% | 1946 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 94% | 45,701 psi | 83% | 2172 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 38,943 psi | 71% | 2077 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,884 psi | 69% | 2077 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 35,128 psi | 64% | 2005 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 41,452 psi | 75% | 2136 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,328 psi | 57% | 1985 fps | 96% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,160 psi | 71% | 2077 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,971 psi | 69% | 2067 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,263 psi | 73% | 2018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,127 psi | 60% | 1916 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 43,323 psi | 79% | 2113 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 44,440 psi | 81% | 2165 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 39,885 psi | 72% | 2024 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,044 psi | 71% | 2080 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 31,357 psi | 57% | 1955 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 25,643 psi | 47% | 1896 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 45,600 psi | 83% | 2070 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,422 psi | 73% | 2018 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,781 psi | 65% | 2005 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,637 psi | 66% | 2014 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,617 psi | 54% | 1903 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 34,113 psi | 62% | 2028 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 41,350 psi | 75% | 2096 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 35,288 psi | 64% | 2008 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 33,127 psi | 60% | 2028 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 31,111 psi | 56% | 2051 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 28,384 psi | 52% | 1883 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 40,495 psi | 73% | 2133 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 41,989 psi | 76% | 2198 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,115 psi | 67% | 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 106 powders for 8.5 x 63 R loaded with the .338 | 265gr | Nosler AccuBond Long Range. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,349 fps; across all powders the maximum-charge window runs from 1,345 fps to 2,349 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 54–90 %, 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. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for 8.5 x 63 R 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.