Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:250 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:8.5 x 55 Blaser load data
Case Length (l3):2.15"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:77 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:12.5
Load data in caliber 8.5 x 55 Blaser with .338 | 250gr | Nosler AccuBond bullet and 104 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 60 and ReloadSwiss RS 52.
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% | 56,115 psi | 90% | 2333 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,476 psi | 87% | 2362 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,664 psi | 86% | 2356 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,086 psi | 90% | 2415 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 53,983 psi | 87% | 2352 fps | 96.6% |
| Accurate 4064 | <<locked>> | 94% | 53,519 psi | 86% | 2395 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,820 psi | 78% | 2411 fps | 99.1% |
| Accurate LT-30 | <<locked>> | 82% | 55,361 psi | 89% | 2283 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,767 psi | 89% | 2306 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,984 psi | 88% | 2425 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 55,666 psi | 89% | 2421 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,230 psi | 87% | 2385 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 54,317 psi | 87% | 2359 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,201 psi | 87% | 2526 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,114 psi | 88% | 2438 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,970 psi | 90% | 2336 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,115 psi | 90% | 2461 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,254 psi | 77% | 2418 fps | 99.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 55,709 psi | 89% | 2546 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,069 psi | 55% | 2192 fps | 97.3% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,404 psi | 87% | 2287 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,694 psi | 88% | 2441 fps | 99.6% |
| Bofors RP3 | <<locked>> | 96% | 55,811 psi | 89% | 2457 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,391 psi | 90% | 2425 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,420 psi | 90% | 2369 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 52,852 psi | 85% | 2411 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,998 psi | 88% | 2497 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 54,839 psi | 88% | 2375 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,101 psi | 90% | 2405 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,490 psi | 86% | 2421 fps | 99.2% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,141 psi | 84% | 2457 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 98% | 53,708 psi | 86% | 2428 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 90% | 55,463 psi | 89% | 2434 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,295 psi | 71% | 2316 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,012 psi | 87% | 2461 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 53,505 psi | 86% | 2490 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 56% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,330 psi | 86% | 2392 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 54,940 psi | 88% | 2415 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,434 psi | 89% | 2408 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,985 psi | 90% | 2392 fps | 97.8% |
| IMR 4198 | <<locked>> | 84% | 56,101 psi | 90% | 2297 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 49,458 psi | 79% | 2356 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 98% | 54,853 psi | 88% | 2408 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,427 psi | 74% | 2362 fps | 98.8% |
| IMR 4895 | <<locked>> | 92% | 54,070 psi | 87% | 2444 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 54,230 psi | 87% | 2385 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,462 psi | 87% | 2375 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,201 psi | 87% | 2405 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,897 psi | 88% | 2359 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 54,940 psi | 88% | 2405 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,824 psi | 86% | 2402 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,126 psi | 82% | 2385 fps | 97.3% |
| Norma 201 | <<locked>> | 90% | 53,708 psi | 86% | 2375 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,186 psi | 87% | 2379 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,259 psi | 89% | 2448 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 48,530 psi | 78% | 2405 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 94% | 55,738 psi | 89% | 2474 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,718 psi | 77% | 2398 fps | 97.3% |
| Ramshot TAC | <<locked>> | 88% | 54,592 psi | 88% | 2402 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 88% | 53,737 psi | 86% | 2418 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,419 psi | 89% | 2388 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,447 psi | 57% | 1453 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,882 psi | 86% | 2369 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,230 psi | 87% | 2408 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,173 psi | 90% | 2516 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,506 psi | 89% | 2546 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,312 psi | 77% | 2431 fps | 98.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,284 psi | 79% | 2454 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 88% | 55,013 psi | 88% | 2362 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,215 psi | 87% | 2375 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,332 psi | 89% | 2444 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,391 psi | 90% | 2425 fps | 97.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,824 psi | 86% | 2402 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,201 psi | 87% | 2405 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,940 psi | 88% | 2405 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,126 psi | 82% | 2385 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,490 psi | 86% | 2343 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,621 psi | 86% | 2454 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,432 psi | 86% | 2316 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,376 psi | 90% | 2428 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,258 psi | 85% | 2402 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,767 psi | 89% | 2323 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,303 psi | 89% | 2320 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,302 psi | 87% | 2362 fps | 97.5% |
| Somchem S321 | <<locked>> | 86% | 55,405 psi | 89% | 2415 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,810 psi | 88% | 2323 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,898 psi | 90% | 2421 fps | 100% |
| Somchem S355 | <<locked>> | 98% | 55,840 psi | 90% | 2441 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,279 psi | 69% | 2365 fps | 100% |
| Vihtavuori N130 | <<locked>> | 86% | 55,622 psi | 89% | 2293 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,782 psi | 89% | 2310 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,287 psi | 85% | 2343 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,418 psi | 87% | 2359 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 53,954 psi | 87% | 2382 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,169 psi | 82% | 2405 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 88% | 54,650 psi | 88% | 2382 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 55,999 psi | 90% | 2402 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,125 psi | 80% | 2411 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,187 psi | 58% | 2254 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,996 psi | 83% | 2392 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 53,896 psi | 86% | 2425 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,460 psi | 84% | 2461 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,376 psi | 90% | 2451 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% | 43,990 psi | 71% | 2185 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,718 psi | 77% | 2277 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,376 psi | 58% | 2119 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,902 psi | 69% | 2244 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,398 psi | 76% | 2264 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 34,374 psi | 55% | 2110 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 32,358 psi | 52% | 2133 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 52,315 psi | 84% | 2247 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,663 psi | 84% | 2267 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,335 psi | 65% | 2208 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 34,374 psi | 55% | 2080 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,322 psi | 68% | 2215 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 41,959 psi | 67% | 2208 fps | 100% |
| Alliant Power Pro 2000-MR | 46.9 gr | 80% | 36,405 psi | 58% | 2224 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,634 psi | 54% | 2100 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,559 psi | 79% | 2260 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,216 psi | 58% | 2152 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 33,504 psi | 54% | 2142 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 28,877 psi | 46% | 2060 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,226 psi | 48% | 2100 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,039 psi | 82% | 2247 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,059 psi | 63% | 2205 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 32,982 psi | 53% | 2100 fps | 97.8% |
| Bofors RP7 | <<locked>> | 94% | 46,760 psi | 75% | 2290 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,251 psi | 71% | 2205 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,669 psi | 65% | 2234 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,614 psi | 72% | 2349 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 48,211 psi | 77% | 2293 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,979 psi | 79% | 2316 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 36,303 psi | 58% | 2146 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 94% | 42,931 psi | 69% | 2313 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 96% | 50,488 psi | 81% | 2382 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 40,654 psi | 65% | 2218 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 28,718 psi | 46% | 2011 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,332 psi | 58% | 2185 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 96% | 46,325 psi | 74% | 2385 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,005 psi | 42% | 1266 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,972 psi | 62% | 2172 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 39,813 psi | 64% | 2211 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,998 psi | 58% | 2106 fps | 97.1% |
| IMR 4166 Enduron | <<locked>> | 84% | 43,598 psi | 70% | 2211 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 49,908 psi | 80% | 2224 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 46,499 psi | 75% | 2310 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 43,236 psi | 69% | 2234 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 33,779 psi | 54% | 2142 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 37,028 psi | 59% | 2175 fps | 98% |
| IMR 8208 XBR | <<locked>> | 80% | 42,322 psi | 68% | 2215 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 47,485 psi | 76% | 2283 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 38,798 psi | 62% | 2188 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 40,872 psi | 66% | 2156 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 35,781 psi | 57% | 2113 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 37,405 psi | 60% | 2146 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 42,453 psi | 68% | 2254 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 39,465 psi | 63% | 2165 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 39,711 psi | 64% | 2178 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,578 psi | 57% | 2142 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 33,315 psi | 53% | 2136 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 34,954 psi | 56% | 2149 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 39,494 psi | 63% | 2260 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 42,061 psi | 67% | 2215 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,307 psi | 66% | 2234 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,832 psi | 73% | 2257 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,324 psi | 42% | 1296 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,326 psi | 76% | 2280 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 41,916 psi | 67% | 2224 fps | 95.6% |
| ReloadSwiss RS 52 | 45.4 gr | 80% | 37,304 psi | 60% | 2231 fps | 97.5% |
| ReloadSwiss RS 60 | 46.1 gr | 80% | 30,748 psi | 49% | 2116 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 34,722 psi | 56% | 2195 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 37,782 psi | 61% | 2251 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 43,468 psi | 70% | 2205 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,637 psi | 60% | 2126 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 30,951 psi | 50% | 2051 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 94% | 46,760 psi | 75% | 2290 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 37,405 psi | 60% | 2146 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,798 psi | 62% | 2188 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 35,781 psi | 57% | 2113 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 94% | 42,453 psi | 68% | 2254 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,198 psi | 80% | 2300 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,024 psi | 51% | 2093 fps | 96.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,357 psi | 81% | 2277 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,219 psi | 64% | 2192 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,725 psi | 62% | 2178 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,162 psi | 66% | 2129 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,924 psi | 54% | 2021 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 44,556 psi | 71% | 2231 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 45,295 psi | 73% | 2280 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 40,553 psi | 65% | 2133 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,827 psi | 64% | 2192 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 31,995 psi | 51% | 2060 fps | 96.9% |
| Somchem S365 | <<locked>> | 84% | 26,165 psi | 42% | 1998 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 46,557 psi | 75% | 2182 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,321 psi | 66% | 2126 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,738 psi | 59% | 2116 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,449 psi | 60% | 2123 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,371 psi | 49% | 2008 fps | 97.7% |
| Vihtavuori N160 | <<locked>> | 88% | 34,882 psi | 56% | 2139 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 42,337 psi | 68% | 2211 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 35,897 psi | 58% | 2113 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 33,982 psi | 54% | 2139 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 32,068 psi | 51% | 2165 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 28,964 psi | 46% | 1985 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 41,307 psi | 66% | 2247 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 43,149 psi | 69% | 2320 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,043 psi | 61% | 2185 fps | 98.6% |
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 104 powders for 8.5 x 55 Blaser loaded with the .338 | 250gr | Nosler AccuBond. Alliant Reloder-17 delivers the highest muzzle velocity at 2,546 fps; across all powders the maximum-charge window runs from 1,417 fps to 2,546 fps. Accurate 4350 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 60, ReloadSwiss RS 52 rank at the top here: for 8.5 x 55 Blaser with the .338 | 250gr | Nosler AccuBond 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.