Load Specifications
Bullet Manufacturer:Barnes
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:1:13.5
Load data in caliber 8.5 x 55 Blaser with .338 | 250gr | Barnes Banded Solid RN 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 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>> | 86% | 54,592 psi | 88% | 2329 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 52,852 psi | 85% | 2356 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,825 psi | 90% | 2392 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,434 psi | 90% | 2444 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 53,142 psi | 85% | 2352 fps | 96.7% |
| Accurate 4064 | <<locked>> | 94% | 55,535 psi | 89% | 2431 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,140 psi | 82% | 2457 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 53,301 psi | 85% | 2418 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 54,259 psi | 87% | 2418 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,825 psi | 90% | 2418 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,405 psi | 90% | 2392 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,244 psi | 87% | 2467 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,101 psi | 90% | 2569 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,896 psi | 86% | 2438 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,302 psi | 87% | 2329 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,534 psi | 87% | 2454 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,951 psi | 80% | 2464 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,215 psi | 87% | 2543 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,331 psi | 57% | 2234 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,030 psi | 63% | 2362 fps | 96.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,072 psi | 90% | 2320 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,026 psi | 85% | 2434 fps | 99.6% |
| Bofors RP3 | <<locked>> | 94% | 54,114 psi | 87% | 2448 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 54,708 psi | 88% | 2421 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,694 psi | 88% | 2365 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,868 psi | 88% | 2448 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,272 psi | 85% | 2490 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 86% | 56,086 psi | 90% | 2402 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,405 psi | 89% | 2461 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 98% | 56,275 psi | 90% | 2526 fps | 98.3% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 53,388 psi | 86% | 2441 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 88% | 53,766 psi | 86% | 2428 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,948 psi | 74% | 2356 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 56,072 psi | 90% | 2500 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,564 psi | 89% | 2539 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,201 psi | 56% | 1437 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 53,896 psi | 86% | 2415 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 55,230 psi | 89% | 2431 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,275 psi | 90% | 2434 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 96% | 55,985 psi | 90% | 2411 fps | 98.1% |
| IMR 4198 | <<locked>> | 82% | 54,491 psi | 87% | 2293 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,343 psi | 82% | 2398 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,316 psi | 85% | 2405 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,294 psi | 69% | 2329 fps | 98.5% |
| IMR 4895 | <<locked>> | 92% | 55,898 psi | 90% | 2480 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 55,825 psi | 90% | 2418 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 56,362 psi | 90% | 2411 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 56,072 psi | 90% | 2438 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,461 psi | 86% | 2359 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 53,461 psi | 86% | 2402 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,550 psi | 89% | 2441 fps | 99% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,156 psi | 85% | 2431 fps | 97.9% |
| Norma 201 | <<locked>> | 90% | 55,608 psi | 89% | 2415 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,811 psi | 89% | 2411 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,693 psi | 86% | 2444 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 50,691 psi | 81% | 2451 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 92% | 53,925 psi | 86% | 2467 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,472 psi | 79% | 2444 fps | 98% |
| Ramshot TAC | <<locked>> | 88% | 56,376 psi | 90% | 2444 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,724 psi | 89% | 2457 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,563 psi | 86% | 2382 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,694 psi | 57% | 1473 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,593 psi | 89% | 2402 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,941 psi | 90% | 2448 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,926 psi | 88% | 2516 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,128 psi | 87% | 2543 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,531 psi | 81% | 2477 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,155 psi | 82% | 2500 fps | 99% |
| Rottweil R 901 | <<locked>> | 86% | 53,563 psi | 86% | 2359 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,796 psi | 89% | 2408 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 53,983 psi | 87% | 2441 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 54,708 psi | 88% | 2421 fps | 97.4% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,550 psi | 89% | 2441 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 90% | 56,072 psi | 90% | 2438 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,461 psi | 86% | 2402 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,156 psi | 85% | 2431 fps | 97.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,332 psi | 89% | 2379 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,825 psi | 90% | 2497 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,245 psi | 89% | 2349 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,534 psi | 87% | 2421 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,201 psi | 89% | 2441 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,012 psi | 87% | 2320 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,969 psi | 87% | 2320 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 56,333 psi | 90% | 2405 fps | 98% |
| Somchem S321 | <<locked>> | 84% | 53,606 psi | 86% | 2408 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,374 psi | 86% | 2320 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,143 psi | 87% | 2415 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 54,491 psi | 87% | 2438 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,179 psi | 72% | 2408 fps | 100% |
| Unknown powderᴾ | <<locked>> | 100% | 55,347 psi | 89% | 2500 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 84% | 54,128 psi | 87% | 2287 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,128 psi | 87% | 2306 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,434 psi | 89% | 2379 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 52,968 psi | 85% | 2356 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,912 psi | 90% | 2418 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,287 psi | 85% | 2448 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 52,924 psi | 85% | 2375 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 54,621 psi | 88% | 2398 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,054 psi | 83% | 2451 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,029 psi | 61% | 2300 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,838 psi | 86% | 2431 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 53,055 psi | 85% | 2425 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,275 psi | 90% | 2526 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,488 psi | 50% | 2218 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,434 psi | 90% | 2467 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% | 45,368 psi | 73% | 2215 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,472 psi | 79% | 2313 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,927 psi | 61% | 2152 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,033 psi | 69% | 2267 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 46,630 psi | 75% | 2264 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 35,897 psi | 58% | 2149 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 31,618 psi | 51% | 2126 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 41,698 psi | 67% | 2244 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 35,375 psi | 57% | 2113 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,700 psi | 70% | 2251 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 43,439 psi | 70% | 2238 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,981 psi | 82% | 2421 fps | 100% |
| Alliant Power Pro 2000-MR | 48.6 gr | 80% | 37,681 psi | 60% | 2267 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,751 psi | 56% | 2133 fps | 98.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,053 psi | 82% | 2290 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,521 psi | 60% | 2188 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,648 psi | 52% | 2139 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 29,979 psi | 48% | 2103 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,617 psi | 47% | 2100 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,303 psi | 58% | 2306 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,692 psi | 84% | 2280 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,683 psi | 65% | 2247 fps | 97.9% |
| Bofors RP3 | <<locked>> | 80% | 34,258 psi | 55% | 2139 fps | 98.3% |
| Bofors RP7 | <<locked>> | 92% | 45,658 psi | 73% | 2290 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,614 psi | 73% | 2241 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,192 psi | 68% | 2270 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,224 psi | 74% | 2388 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 46,253 psi | 74% | 2277 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,273 psi | 57% | 2139 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 90% | 42,873 psi | 69% | 2329 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 96% | 47,326 psi | 76% | 2352 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 42,047 psi | 67% | 2254 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,079 psi | 45% | 2008 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,723 psi | 57% | 2188 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 94% | 44,991 psi | 72% | 2382 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,295 psi | 42% | 1283 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,434 psi | 60% | 2159 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 37,942 psi | 61% | 2192 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,896 psi | 56% | 2100 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 86% | 41,684 psi | 67% | 2195 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 51,488 psi | 83% | 2257 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 45,324 psi | 73% | 2310 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 41,916 psi | 67% | 2228 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 31,647 psi | 51% | 2110 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 38,392 psi | 62% | 2215 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 43,700 psi | 70% | 2251 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 49,139 psi | 79% | 2320 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,451 psi | 65% | 2228 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 41,959 psi | 67% | 2188 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 36,927 psi | 59% | 2146 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 36,448 psi | 58% | 2139 fps | 95.1% |
| Lovex S070 | <<locked>> | 92% | 41,553 psi | 67% | 2251 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 40,872 psi | 66% | 2205 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 40,915 psi | 66% | 2208 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,883 psi | 59% | 2178 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 32,474 psi | 52% | 2133 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 36,260 psi | 58% | 2188 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 38,392 psi | 62% | 2254 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 43,598 psi | 70% | 2257 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,772 psi | 69% | 2270 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,239 psi | 76% | 2293 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,600 psi | 43% | 1312 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,023 psi | 79% | 2320 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,712 psi | 65% | 2218 fps | 95.5% |
| ReloadSwiss RS 52 | 47.1 gr | 80% | 38,928 psi | 62% | 2274 fps | 98.1% |
| ReloadSwiss RS 60 | 47.8 gr | 80% | 31,923 psi | 51% | 2162 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 33,707 psi | 54% | 2188 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 36,637 psi | 59% | 2244 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 44,759 psi | 72% | 2238 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,015 psi | 63% | 2165 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 32,256 psi | 52% | 2090 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 45,658 psi | 73% | 2290 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 36,448 psi | 58% | 2139 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,451 psi | 65% | 2228 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 36,927 psi | 59% | 2146 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 41,553 psi | 67% | 2251 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,779 psi | 83% | 2336 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,272 psi | 53% | 2133 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,880 psi | 83% | 2310 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,611 psi | 67% | 2231 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,176 psi | 64% | 2218 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,366 psi | 68% | 2162 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,070 psi | 56% | 2054 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,279 psi | 69% | 2224 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 47,079 psi | 75% | 2320 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 41,945 psi | 67% | 2165 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,423 psi | 66% | 2231 fps | 98.8% |
| Somchem S355 | <<locked>> | 80% | 33,257 psi | 53% | 2096 fps | 97.5% |
| Somchem S365 | <<locked>> | 82% | 25,643 psi | 41% | 1998 fps | 95.7% |
| Unknown powder | <<locked>> | 86% | 35,389 psi | 57% | 2178 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 47,935 psi | 77% | 2211 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,583 psi | 68% | 2159 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,116 psi | 61% | 2149 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,827 psi | 62% | 2156 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,546 psi | 51% | 2044 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 33,953 psi | 54% | 2133 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,700 psi | 70% | 2247 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 37,318 psi | 60% | 2149 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 33,272 psi | 53% | 2136 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 94% | 31,401 psi | 50% | 2162 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,166 psi | 45% | 1982 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 46,427 psi | 74% | 2336 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 42,873 psi | 69% | 2329 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,704 psi | 48% | 2169 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,936 psi | 78% | 2372 fps | 99.9% |
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 55 Blaser loaded with the .338 | 250gr | Barnes Banded Solid RN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,569 fps; across all powders the maximum-charge window runs from 1,437 fps to 2,569 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 50–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:13.5 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, ReloadSwiss RS 52 rank at the top here: for 8.5 x 55 Blaser with the .338 | 250gr | Barnes Banded Solid RN 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.