Load Specifications
Bullet Manufacturer:Hornady
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:1:13.0
Load data in caliber 8.5 x 55 Blaser with .338 | 225gr | Hornady SST InterLock bullet and 102 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% | 53,969 psi | 87% | 2464 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 55,767 psi | 89% | 2533 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,708 psi | 88% | 2523 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 53,853 psi | 86% | 2546 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 55,317 psi | 89% | 2513 fps | 95.9% |
| Accurate 4064 | <<locked>> | 96% | 54,288 psi | 87% | 2559 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,253 psi | 74% | 2520 fps | 98% |
| Accurate LT-30 | <<locked>> | 82% | 53,751 psi | 86% | 2415 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,157 psi | 87% | 2438 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,217 psi | 90% | 2595 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 53,737 psi | 86% | 2543 fps | 99.3% |
| ADI AR 2219 | <<locked>> | 82% | 54,230 psi | 87% | 2523 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,666 psi | 89% | 2556 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 55,579 psi | 89% | 2533 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 53,722 psi | 86% | 2602 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,593 psi | 89% | 2700 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 52,895 psi | 85% | 2562 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,056 psi | 87% | 2470 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 53,969 psi | 87% | 2585 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,151 psi | 74% | 2526 fps | 98.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,447 psi | 86% | 2671 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,188 psi | 90% | 2457 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,101 psi | 90% | 2612 fps | 99.4% |
| Bofors RP3 | <<locked>> | 96% | 53,171 psi | 85% | 2575 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 54,273 psi | 87% | 2543 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,317 psi | 87% | 2493 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,476 psi | 87% | 2585 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 56,260 psi | 90% | 2671 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 52,750 psi | 85% | 2507 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 53,809 psi | 86% | 2533 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,723 psi | 88% | 2585 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 49,864 psi | 80% | 2569 fps | 96% |
| Hodgdon H4895 | <<locked>> | 90% | 53,476 psi | 86% | 2562 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,496 psi | 68% | 2425 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,448 psi | 89% | 2635 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,896 psi | 56% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,621 psi | 88% | 2559 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 55,999 psi | 90% | 2585 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 53,330 psi | 86% | 2530 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 92% | 53,940 psi | 86% | 2510 fps | 96.6% |
| IMR 4198 | <<locked>> | 84% | 54,375 psi | 87% | 2431 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 56,144 psi | 90% | 2569 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,411 psi | 71% | 2474 fps | 97.7% |
| IMR 4895 | <<locked>> | 94% | 55,288 psi | 89% | 2612 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 90% | 55,666 psi | 89% | 2556 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 55,912 psi | 90% | 2546 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,259 psi | 89% | 2572 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,345 psi | 86% | 2487 fps | 99.6% |
| Lovex S062 | <<locked>> | 96% | 56,014 psi | 90% | 2569 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,793 psi | 83% | 2516 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,994 psi | 79% | 2497 fps | 95.9% |
| Norma 201 | <<locked>> | 92% | 55,129 psi | 88% | 2546 fps | 100% |
| Norma 202 | <<locked>> | 92% | 55,477 psi | 89% | 2549 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,347 psi | 90% | 2618 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 46,340 psi | 74% | 2516 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 94% | 53,185 psi | 85% | 2595 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,643 psi | 73% | 2507 fps | 95.8% |
| Ramshot TAC | <<locked>> | 90% | 56,057 psi | 90% | 2569 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,158 psi | 88% | 2585 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 53,432 psi | 86% | 2510 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,041 psi | 56% | 1552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,274 psi | 89% | 2539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,637 psi | 89% | 2572 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 53,838 psi | 86% | 2644 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 53,447 psi | 86% | 2674 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,079 psi | 74% | 2539 fps | 97.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,268 psi | 76% | 2559 fps | 97.1% |
| Rottweil R 901 | <<locked>> | 90% | 56,202 psi | 90% | 2530 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,274 psi | 89% | 2539 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 53,026 psi | 85% | 2566 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 54,273 psi | 87% | 2543 fps | 96.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,793 psi | 83% | 2516 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,259 psi | 89% | 2572 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,014 psi | 90% | 2569 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,994 psi | 79% | 2497 fps | 95.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,361 psi | 89% | 2513 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,578 psi | 88% | 2536 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 54,737 psi | 88% | 2621 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,955 psi | 88% | 2490 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,288 psi | 87% | 2549 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,737 psi | 88% | 2572 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 53,751 psi | 86% | 2451 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 53,287 psi | 85% | 2448 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 52,228 psi | 84% | 2477 fps | 96.2% |
| Somchem S321 | <<locked>> | 86% | 53,200 psi | 85% | 2539 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 56,260 psi | 90% | 2493 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 53,548 psi | 86% | 2543 fps | 99.6% |
| Somchem S355 | <<locked>> | 98% | 53,795 psi | 86% | 2566 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,249 psi | 66% | 2470 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 86% | 53,925 psi | 86% | 2425 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 53,708 psi | 86% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,375 psi | 87% | 2510 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,898 psi | 90% | 2530 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,187 psi | 88% | 2549 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,776 psi | 78% | 2513 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 90% | 56,101 psi | 90% | 2552 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 54,085 psi | 87% | 2530 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,877 psi | 77% | 2520 fps | 97.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,893 psi | 80% | 2507 fps | 99.6% |
| Winchester 748 | <<locked>> | 90% | 55,405 psi | 89% | 2595 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 50,111 psi | 80% | 2572 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,201 psi | 87% | 2575 fps | 99.9% |
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% | 42,264 psi | 68% | 2303 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,847 psi | 74% | 2398 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,737 psi | 56% | 2228 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,988 psi | 66% | 2356 fps | 99.8% |
| Accurate 2700 | <<locked>> | 92% | 51,880 psi | 83% | 2464 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 32,851 psi | 53% | 2215 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 35,085 psi | 56% | 2320 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 50,633 psi | 81% | 2375 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,024 psi | 82% | 2395 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,769 psi | 62% | 2313 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 35,230 psi | 56% | 2228 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 50,763 psi | 81% | 2477 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,799 psi | 65% | 2326 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 80% | 39,929 psi | 64% | 2326 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,210 psi | 76% | 2503 fps | 99.4% |
| Alliant Power Pro 2000-MR | 50.4 gr | 82% | 37,217 psi | 60% | 2372 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,039 psi | 51% | 2195 fps | 96.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,848 psi | 77% | 2388 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,693 psi | 56% | 2251 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 36,303 psi | 58% | 2333 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,633 psi | 51% | 2251 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,458 psi | 79% | 2372 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,521 psi | 60% | 2310 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 31,372 psi | 50% | 2195 fps | 96.3% |
| Bofors RP7 | <<locked>> | 98% | 50,865 psi | 82% | 2490 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,830 psi | 69% | 2323 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,812 psi | 62% | 2339 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,685 psi | 68% | 2461 fps | 97.9% |
| Hodgdon H322 | <<locked>> | 80% | 46,383 psi | 74% | 2418 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,224 psi | 76% | 2441 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 37,159 psi | 60% | 2297 fps | 95% |
| Hodgdon H414 | <<locked>> | 98% | 46,949 psi | 75% | 2520 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 39,044 psi | 63% | 2326 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 31,198 psi | 50% | 2192 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,012 psi | 56% | 2293 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,933 psi | 42% | 1355 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,478 psi | 60% | 2280 fps | 97.6% |
| IMR 3031 | <<locked>> | 80% | 37,971 psi | 61% | 2326 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,563 psi | 55% | 2208 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 47,761 psi | 77% | 2415 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 48,312 psi | 77% | 2356 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 49,995 psi | 80% | 2480 fps | 95.7% |
| IMR 4831 | <<locked>> | 94% | 36,492 psi | 59% | 2329 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 35,462 psi | 57% | 2277 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 80% | 40,799 psi | 65% | 2326 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 45,687 psi | 73% | 2402 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 37,144 psi | 60% | 2297 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 39,363 psi | 63% | 2264 fps | 97.6% |
| Lovex S062 | <<locked>> | 80% | 34,258 psi | 55% | 2215 fps | 97.6% |
| Lovex S065 | <<locked>> | 92% | 40,640 psi | 65% | 2336 fps | 95% |
| Lovex S070 | <<locked>> | 98% | 46,137 psi | 74% | 2451 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 38,058 psi | 61% | 2277 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 37,971 psi | 61% | 2287 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 34,069 psi | 55% | 2241 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 35,926 psi | 58% | 2323 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 33,446 psi | 54% | 2247 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 98% | 42,873 psi | 69% | 2454 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 40,582 psi | 65% | 2323 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,784 psi | 64% | 2346 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,048 psi | 71% | 2369 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 42% | 1388 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,716 psi | 73% | 2405 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 45,890 psi | 74% | 2428 fps | 95.6% |
| ReloadSwiss RS 52 | 47.7 gr | 80% | 35,679 psi | 57% | 2333 fps | 96% |
| ReloadSwiss RS 60 | 48.5 gr | 80% | 29,675 psi | 48% | 2211 fps | 97% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 37,797 psi | 61% | 2388 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 41,249 psi | 66% | 2448 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 41,843 psi | 67% | 2320 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 36,143 psi | 58% | 2231 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 29,544 psi | 47% | 2146 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 98% | 50,865 psi | 82% | 2490 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 40,640 psi | 65% | 2336 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,144 psi | 60% | 2297 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 34,258 psi | 55% | 2215 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 98% | 46,137 psi | 74% | 2451 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,283 psi | 77% | 2418 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,184 psi | 82% | 2490 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,808 psi | 53% | 2238 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,573 psi | 78% | 2405 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,624 psi | 62% | 2297 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,289 psi | 60% | 2287 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,755 psi | 64% | 2244 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,648 psi | 52% | 2126 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 48,704 psi | 78% | 2428 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 43,598 psi | 70% | 2395 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 39,160 psi | 63% | 2247 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,247 psi | 61% | 2297 fps | 97.2% |
| Somchem S355 | <<locked>> | 80% | 30,705 psi | 49% | 2156 fps | 95.4% |
| Somchem S365 | <<locked>> | 88% | 28,326 psi | 45% | 2178 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 45,020 psi | 72% | 2306 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,856 psi | 64% | 2244 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,172 psi | 56% | 2228 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,998 psi | 58% | 2231 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 29,051 psi | 47% | 2103 fps | 96.3% |
| Vihtavuori N160 | <<locked>> | 92% | 37,826 psi | 61% | 2326 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 40,683 psi | 65% | 2323 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 80% | 34,577 psi | 55% | 2221 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 37,028 psi | 59% | 2329 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,662 psi | 51% | 2169 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 39,711 psi | 64% | 2362 fps | 99.3% |
| Winchester 760 | <<locked>> | 98% | 46,949 psi | 75% | 2520 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,361 psi | 58% | 2287 fps | 97.4% |
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 102 powders for 8.5 x 55 Blaser loaded with the .338 | 225gr | Hornady SST InterLock. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,700 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,700 fps. Accurate 4350 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:13.0 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 52, ReloadSwiss RS 60 rank at the top here: for 8.5 x 55 Blaser with the .338 | 225gr | Hornady SST InterLock 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.