Load Specifications
Bullet Manufacturer:Barnes
Bullet Weight:225 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:1:12.0
Load data in caliber 8.5 x 55 Blaser with .338 | 225gr | Barnes TAC-TX BT bullet and 101 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 Hodgdon CFE223.
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>> | 90% | 53,548 psi | 86% | 2448 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,998 psi | 87% | 2533 fps | 99.1% |
| Accurate 2230 | <<locked>> | 82% | 54,926 psi | 88% | 2546 fps | 99.4% |
| Accurate 2460 | <<locked>> | 88% | 55,622 psi | 89% | 2516 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 53,287 psi | 85% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,084 psi | 85% | 2523 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 56,304 psi | 90% | 2572 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 41,843 psi | 67% | 2438 fps | 96.7% |
| Accurate LT-30 | <<locked>> | 84% | 54,056 psi | 87% | 2402 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,520 psi | 87% | 2425 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 55,854 psi | 90% | 2572 fps | 99.7% |
| ADI AR 2207 | <<locked>> | 82% | 55,521 psi | 89% | 2415 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 53,650 psi | 86% | 2523 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 84% | 54,157 psi | 87% | 2510 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 55,347 psi | 89% | 2533 fps | 100% |
| Alliant AR-Comp | <<locked>> | 92% | 54,897 psi | 88% | 2513 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,287 psi | 85% | 2582 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 55,579 psi | 89% | 2674 fps | 99.3% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 55,608 psi | 89% | 2582 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,766 psi | 86% | 2457 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,229 psi | 85% | 2559 fps | 99.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,004 psi | 69% | 2451 fps | 96.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,327 psi | 79% | 2589 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 56,362 psi | 90% | 2444 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 55,898 psi | 90% | 2589 fps | 99.1% |
| Bofors RP3ᴾ | <<locked>> | 100% | 55,941 psi | 90% | 2595 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,534 psi | 87% | 2480 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 53,795 psi | 86% | 2562 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 55,970 psi | 90% | 2651 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 86% | 52,881 psi | 85% | 2493 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,867 psi | 86% | 2516 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 54,259 psi | 87% | 2562 fps | 98.4% |
| Hodgdon H4198 | <<locked>> | 82% | 56,275 psi | 90% | 2444 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 56,304 psi | 90% | 2582 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,972 psi | 62% | 2346 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,897 psi | 88% | 2612 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,156 psi | 55% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,737 psi | 88% | 2543 fps | 99.8% |
| IMR 3031 | <<locked>> | 94% | 55,521 psi | 89% | 2569 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,040 psi | 85% | 2507 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 94% | 53,954 psi | 87% | 2487 fps | 96.2% |
| IMR 4198 | <<locked>> | 86% | 54,317 psi | 87% | 2418 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 52,866 psi | 85% | 2503 fps | 95.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,553 psi | 65% | 2395 fps | 96.4% |
| IMR 4895 | <<locked>> | 96% | 54,549 psi | 87% | 2585 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 92% | 55,347 psi | 89% | 2533 fps | 100% |
| Lovex D073.4 | <<locked>> | 82% | 55,579 psi | 89% | 2523 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 55,579 psi | 89% | 2526 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 54,650 psi | 88% | 2552 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 56,405 psi | 90% | 2510 fps | 99.7% |
| Lovex S062 | <<locked>> | 98% | 55,535 psi | 89% | 2549 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 47,863 psi | 77% | 2441 fps | 96.5% |
| Norma 200 | <<locked>> | 82% | 53,185 psi | 85% | 2425 fps | 100% |
| Norma 201 | <<locked>> | 94% | 54,418 psi | 87% | 2523 fps | 100% |
| Norma 202 | <<locked>> | 94% | 54,955 psi | 88% | 2530 fps | 100% |
| Norma 203B | <<locked>> | 98% | 55,738 psi | 89% | 2592 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 42,583 psi | 68% | 2438 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 96% | 52,837 psi | 85% | 2572 fps | 99.4% |
| Ramshot TAC | <<locked>> | 92% | 56,159 psi | 90% | 2549 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 92% | 55,013 psi | 88% | 2569 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,476 psi | 86% | 2493 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,476 psi | 55% | 1526 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 55,376 psi | 89% | 2523 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 55,187 psi | 88% | 2546 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 52,939 psi | 85% | 2615 fps | 99.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,823 psi | 85% | 2648 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,235 psi | 68% | 2457 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 92% | 55,376 psi | 89% | 2507 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 54,607 psi | 88% | 2516 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 51,880 psi | 83% | 2536 fps | 99.7% |
| Shooters World AR Plus | <<locked>> | 82% | 55,579 psi | 89% | 2523 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 47,863 psi | 77% | 2441 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 94% | 54,650 psi | 88% | 2552 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 55,535 psi | 89% | 2549 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 55,405 psi | 89% | 2497 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,752 psi | 88% | 2178 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,549 psi | 87% | 2520 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 54,186 psi | 87% | 2598 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 54,955 psi | 88% | 2474 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 53,780 psi | 86% | 2523 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 54,288 psi | 87% | 2549 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 53,824 psi | 86% | 2434 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 56,362 psi | 90% | 2467 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 52,997 psi | 85% | 2523 fps | 100% |
| Somchem S335 | <<locked>> | 94% | 55,753 psi | 89% | 2474 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,388 psi | 86% | 2523 fps | 99.4% |
| Somchem S355ᴾ | <<locked>> | 100% | 52,779 psi | 85% | 2539 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,768 psi | 61% | 2388 fps | 98.6% |
| Vihtavuori N120 | <<locked>> | 82% | 55,434 psi | 89% | 2369 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 53,708 psi | 86% | 2408 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,708 psi | 86% | 2425 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 53,853 psi | 86% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 55,593 psi | 89% | 2510 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,024 psi | 82% | 2480 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,063 psi | 72% | 2441 fps | 97.1% |
| Vihtavuori N530 | <<locked>> | 92% | 56,173 psi | 90% | 2536 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 53,592 psi | 86% | 2510 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 43,888 psi | 70% | 2444 fps | 96.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,470 psi | 75% | 2434 fps | 99% |
| Winchester 748 | <<locked>> | 92% | 55,027 psi | 88% | 2579 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,751 psi | 86% | 2556 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% | 39,015 psi | 63% | 2244 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,589 psi | 81% | 2484 fps | 98.6% |
| Accurate 2230 | <<locked>> | 80% | 51,097 psi | 82% | 2493 fps | 99% |
| Accurate 2460 | <<locked>> | 80% | 42,192 psi | 68% | 2329 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 31,111 psi | 50% | 2156 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,492 psi | 60% | 2283 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 29,501 psi | 47% | 2139 fps | 98.5% |
| Accurate 4350 | <<locked>> | 96% | 36,245 psi | 58% | 2333 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 47,877 psi | 77% | 2320 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,283 psi | 77% | 2339 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 35,795 psi | 57% | 2244 fps | 96.3% |
| ADI AR 2207 | <<locked>> | 80% | 52,301 psi | 84% | 2379 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 34,795 psi | 56% | 2205 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 47,471 psi | 76% | 2421 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,869 psi | 61% | 2260 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 80% | 36,564 psi | 59% | 2267 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,671 psi | 70% | 2431 fps | 98.8% |
| Alliant Power Pro 2000-MR | 49.2 gr | 84% | 36,825 psi | 59% | 2346 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,283 psi | 47% | 2126 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,440 psi | 71% | 2329 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 33,953 psi | 54% | 2224 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 96% | 38,145 psi | 61% | 2356 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 88% | 33,127 psi | 53% | 2274 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,644 psi | 75% | 2320 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 37,275 psi | 60% | 2290 fps | 95.4% |
| Bofors RP3 | <<locked>> | 82% | 30,342 psi | 49% | 2165 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,205 psi | 64% | 2264 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,665 psi | 57% | 2270 fps | 98.1% |
| Hodgdon CFE223 | 48 gr | 80% | 39,378 psi | 63% | 2385 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 80% | 43,352 psi | 70% | 2359 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,758 psi | 70% | 2375 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 38,885 psi | 62% | 2316 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 52,765 psi | 85% | 2402 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 36,056 psi | 58% | 2254 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,285 psi | 52% | 2205 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,184 psi | 52% | 2218 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,280 psi | 41% | 1329 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,940 psi | 56% | 2218 fps | 96.5% |
| IMR 3031 | <<locked>> | 80% | 34,737 psi | 56% | 2260 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,127 psi | 55% | 2188 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 92% | 50,705 psi | 81% | 2441 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 45,643 psi | 73% | 2306 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 49,705 psi | 80% | 2454 fps | 95.1% |
| IMR 4831 | <<locked>> | 98% | 37,956 psi | 61% | 2346 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 32,503 psi | 52% | 2205 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 37,869 psi | 61% | 2260 fps | 98.1% |
| Lovex D073.4 | <<locked>> | 80% | 51,721 psi | 83% | 2474 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 41,901 psi | 67% | 2333 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 33,866 psi | 54% | 2224 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 36,869 psi | 59% | 2201 fps | 96.6% |
| Lovex S062 | <<locked>> | 80% | 31,444 psi | 50% | 2142 fps | 96.3% |
| Lovex S065 | <<locked>> | 96% | 42,424 psi | 68% | 2356 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 50,154 psi | 80% | 2388 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,085 psi | 56% | 2208 fps | 97.5% |
| Norma 202 | <<locked>> | 80% | 35,070 psi | 56% | 2221 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 33,315 psi | 53% | 2215 fps | 95.5% |
| Norma URP | <<locked>> | 96% | 37,637 psi | 60% | 2343 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 84% | 35,143 psi | 56% | 2270 fps | 95.7% |
| Ramshot TAC | <<locked>> | 84% | 43,018 psi | 69% | 2352 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,608 psi | 59% | 2270 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,147 psi | 66% | 2303 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,425 psi | 41% | 1362 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,685 psi | 68% | 2343 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 45,440 psi | 73% | 2402 fps | 95% |
| ReloadSwiss RS 52 | 46.6 gr | 82% | 35,056 psi | 56% | 2306 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,267 psi | 44% | 2129 fps | 95.1% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 39,378 psi | 63% | 2405 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 38,479 psi | 62% | 2254 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 33,185 psi | 53% | 2162 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 84% | 30,458 psi | 49% | 2162 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 51,721 psi | 83% | 2474 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 96% | 42,424 psi | 68% | 2356 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,866 psi | 54% | 2224 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 31,444 psi | 50% | 2142 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,150 psi | 72% | 2352 fps | 99.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,982 psi | 83% | 2149 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,601 psi | 76% | 2428 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 34,418 psi | 55% | 2260 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,310 psi | 73% | 2349 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 40,799 psi | 65% | 2323 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,519 psi | 55% | 2218 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,883 psi | 59% | 2182 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,052 psi | 48% | 2060 fps | 98.9% |
| Somchem S321 | <<locked>> | 80% | 40,451 psi | 65% | 2329 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 36,361 psi | 58% | 2188 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 35,375 psi | 57% | 2228 fps | 96% |
| Somchem S355 | <<locked>> | 84% | 31,763 psi | 51% | 2175 fps | 95.5% |
| Somchem S365 | <<locked>> | 92% | 29,385 psi | 47% | 2195 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 52,272 psi | 84% | 2333 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,989 psi | 67% | 2251 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,999 psi | 59% | 2185 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,039 psi | 51% | 2162 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,257 psi | 53% | 2169 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 82% | 28,210 psi | 45% | 2073 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 96% | 39,566 psi | 63% | 2346 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 37,695 psi | 60% | 2254 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 31,792 psi | 51% | 2152 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 38,595 psi | 62% | 2349 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,359 psi | 53% | 2192 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 36,550 psi | 59% | 2290 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,431 psi | 54% | 2215 fps | 96.2% |
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 101 powders for 8.5 x 55 Blaser loaded with the .338 | 225gr | Barnes TAC-TX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,674 fps; across all powders the maximum-charge window runs from 1,490 fps to 2,674 fps. Accurate 4064 gives the best case fill at 100 %, and 101 of the 101 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 225.0 gr projectile in 0.338" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Accurate 4350, Alliant Reloder- TS 15.5 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, Hodgdon CFE223 rank at the top here: for 8.5 x 55 Blaser with the .338 | 225gr | Barnes TAC-TX BT 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.