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:1:16.5
Load data in caliber 8.5 x 55 Blaser with .338 | 225gr | Hornady InterLock bullet and 105 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% | 55,811 psi | 89% | 2516 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,186 psi | 87% | 2543 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,127 psi | 85% | 2533 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,057 psi | 90% | 2602 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,012 psi | 87% | 2533 fps | 96.3% |
| Accurate 4064 | <<locked>> | 94% | 53,011 psi | 85% | 2572 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,718 psi | 78% | 2589 fps | 98.8% |
| Accurate LT-30 | <<locked>> | 82% | 55,361 psi | 89% | 2464 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,782 psi | 89% | 2490 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,926 psi | 88% | 2608 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 55,811 psi | 89% | 2605 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 82% | 56,318 psi | 90% | 2579 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,041 psi | 87% | 2566 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 54,360 psi | 87% | 2543 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,941 psi | 90% | 2664 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,418 psi | 87% | 2717 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,274 psi | 89% | 2625 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,738 psi | 89% | 2520 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,999 psi | 90% | 2644 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,167 psi | 77% | 2598 fps | 98.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 55,941 psi | 90% | 2736 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,837 psi | 54% | 2343 fps | 96.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,476 psi | 87% | 2467 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,737 psi | 88% | 2625 fps | 99.5% |
| Bofors RP3 | <<locked>> | 96% | 55,680 psi | 89% | 2638 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,420 psi | 90% | 2608 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,188 psi | 90% | 2552 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,026 psi | 85% | 2595 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,071 psi | 88% | 2684 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 54,824 psi | 88% | 2559 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,898 psi | 90% | 2589 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,577 psi | 86% | 2605 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2641 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 98% | 53,708 psi | 86% | 2608 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 90% | 55,492 psi | 89% | 2618 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,208 psi | 71% | 2487 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,244 psi | 87% | 2648 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 53,737 psi | 86% | 2677 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,867 psi | 56% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,447 psi | 86% | 2575 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 54,940 psi | 88% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,303 psi | 89% | 2589 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,811 psi | 89% | 2572 fps | 97.4% |
| IMR 4198 | <<locked>> | 84% | 56,260 psi | 90% | 2484 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,187 psi | 88% | 2592 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,514 psi | 75% | 2536 fps | 98.5% |
| IMR 4895 | <<locked>> | 92% | 53,954 psi | 87% | 2628 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 54,041 psi | 87% | 2566 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 53,896 psi | 86% | 2549 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 53,882 psi | 86% | 2582 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,071 psi | 88% | 2546 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 54,882 psi | 88% | 2585 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,795 psi | 86% | 2582 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 50,952 psi | 82% | 2562 fps | 96.9% |
| Norma 201 | <<locked>> | 90% | 53,505 psi | 86% | 2559 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,070 psi | 87% | 2562 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,114 psi | 88% | 2631 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 48,472 psi | 78% | 2582 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 94% | 55,854 psi | 90% | 2661 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,761 psi | 77% | 2575 fps | 96.9% |
| Ramshot TAC | <<locked>> | 88% | 54,650 psi | 88% | 2585 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 53,708 psi | 86% | 2598 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,390 psi | 89% | 2572 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,186 psi | 56% | 1581 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,824 psi | 86% | 2549 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 53,998 psi | 87% | 2585 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,333 psi | 90% | 2707 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,796 psi | 89% | 2740 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,370 psi | 78% | 2608 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,342 psi | 79% | 2631 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 88% | 54,244 psi | 87% | 2539 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 53,896 psi | 86% | 2552 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,216 psi | 89% | 2625 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,420 psi | 90% | 2608 fps | 97% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,795 psi | 86% | 2582 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 53,882 psi | 86% | 2582 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,882 psi | 88% | 2585 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 50,952 psi | 82% | 2562 fps | 96.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,345 psi | 86% | 2523 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,911 psi | 86% | 2641 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,316 psi | 85% | 2497 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,333 psi | 90% | 2612 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,359 psi | 86% | 2585 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,753 psi | 89% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,288 psi | 89% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,302 psi | 87% | 2539 fps | 97.1% |
| Somchem S321 | <<locked>> | 86% | 55,201 psi | 89% | 2598 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,708 psi | 88% | 2503 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,927 psi | 90% | 2605 fps | 99.9% |
| Somchem S355 | <<locked>> | 98% | 55,956 psi | 90% | 2628 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,250 psi | 69% | 2536 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 86% | 55,376 psi | 89% | 2470 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,854 psi | 90% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,185 psi | 85% | 2523 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,592 psi | 88% | 2543 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 53,954 psi | 87% | 2562 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,198 psi | 82% | 2582 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 88% | 54,592 psi | 88% | 2566 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 56,159 psi | 90% | 2585 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,024 psi | 80% | 2585 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,955 psi | 58% | 2411 fps | 96.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,228 psi | 84% | 2572 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 54,186 psi | 87% | 2612 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2644 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 90% | 52,997 psi | 85% | 2592 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% | 43,410 psi | 70% | 2349 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,282 psi | 76% | 2448 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,578 psi | 57% | 2270 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,409 psi | 68% | 2408 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 50,502 psi | 81% | 2484 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 33,663 psi | 54% | 2260 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 34,243 psi | 55% | 2329 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 52,025 psi | 83% | 2421 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,446 psi | 84% | 2448 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,871 psi | 64% | 2365 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 34,026 psi | 55% | 2231 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 52,533 psi | 84% | 2533 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,959 psi | 67% | 2379 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 41,437 psi | 66% | 2372 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,863 psi | 78% | 2559 fps | 99.7% |
| Alliant Power Pro 2000-MR | 52.3 gr | 80% | 35,940 psi | 58% | 2375 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,083 psi | 53% | 2244 fps | 97.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,313 psi | 79% | 2438 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,679 psi | 57% | 2300 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,317 psi | 57% | 2346 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 82% | 30,458 psi | 49% | 2254 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,821 psi | 51% | 2293 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,169 psi | 82% | 2425 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,972 psi | 62% | 2369 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 32,387 psi | 52% | 2244 fps | 97.1% |
| Bofors RP7 | <<locked>> | 96% | 49,777 psi | 80% | 2513 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,063 psi | 71% | 2375 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,147 psi | 64% | 2392 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,483 psi | 71% | 2523 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 48,182 psi | 77% | 2470 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,863 psi | 78% | 2493 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 35,694 psi | 57% | 2297 fps | 95% |
| Hodgdon H414 | <<locked>> | 96% | 45,876 psi | 74% | 2536 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 96% | 50,459 psi | 81% | 2559 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 40,161 psi | 64% | 2375 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,211 psi | 48% | 2198 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,071 psi | 58% | 2346 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 98% | 49,864 psi | 80% | 2615 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,918 psi | 42% | 1378 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,841 psi | 62% | 2336 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 39,537 psi | 63% | 2379 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,650 psi | 57% | 2260 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 46,253 psi | 74% | 2425 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 49,995 psi | 80% | 2405 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 45,745 psi | 73% | 2448 fps | 95.2% |
| IMR 4831 | <<locked>> | 92% | 35,607 psi | 57% | 2339 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 36,506 psi | 59% | 2329 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 80% | 41,959 psi | 67% | 2379 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 46,992 psi | 75% | 2454 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 38,319 psi | 61% | 2346 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 40,538 psi | 65% | 2316 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 35,273 psi | 57% | 2264 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 39,479 psi | 63% | 2346 fps | 95.2% |
| Lovex S070 | <<locked>> | 96% | 44,962 psi | 72% | 2464 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 39,073 psi | 63% | 2326 fps | 99% |
| Norma 202 | <<locked>> | 80% | 39,160 psi | 63% | 2336 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,056 psi | 56% | 2293 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 35,143 psi | 56% | 2336 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 34,505 psi | 55% | 2300 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 96% | 41,974 psi | 67% | 2474 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 41,945 psi | 67% | 2379 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,104 psi | 66% | 2398 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,353 psi | 73% | 2421 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,107 psi | 42% | 1411 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,253 psi | 76% | 2457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 41,597 psi | 67% | 2385 fps | 95% |
| ReloadSwiss RS 52 | 50.7 gr | 80% | 36,999 psi | 59% | 2388 fps | 96.9% |
| ReloadSwiss RS 60 | 51.5 gr | 80% | 30,371 psi | 49% | 2264 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 36,782 psi | 59% | 2398 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,219 psi | 64% | 2464 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 42,743 psi | 69% | 2369 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,130 psi | 60% | 2280 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 30,385 psi | 49% | 2192 fps | 96% |
| Rottweil R 907 | <<locked>> | 96% | 49,777 psi | 80% | 2513 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 39,479 psi | 63% | 2346 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,319 psi | 61% | 2346 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 35,273 psi | 57% | 2264 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 96% | 44,962 psi | 72% | 2464 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,835 psi | 80% | 2474 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,604 psi | 51% | 2238 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,256 psi | 81% | 2457 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,769 psi | 64% | 2349 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,406 psi | 62% | 2336 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,857 psi | 66% | 2293 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,620 psi | 54% | 2172 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 44,280 psi | 71% | 2392 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 45,208 psi | 72% | 2451 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 40,248 psi | 65% | 2297 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,682 psi | 64% | 2356 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 31,560 psi | 51% | 2205 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 27,354 psi | 44% | 2182 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 46,340 psi | 74% | 2356 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,104 psi | 66% | 2293 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,332 psi | 58% | 2274 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,130 psi | 60% | 2280 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,907 psi | 48% | 2149 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 90% | 36,912 psi | 59% | 2339 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 42,047 psi | 67% | 2375 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 35,636 psi | 57% | 2267 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 36,056 psi | 58% | 2339 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 98% | 33,678 psi | 54% | 2362 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,530 psi | 49% | 2172 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 41,089 psi | 66% | 2411 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 46,122 psi | 74% | 2539 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,666 psi | 60% | 2339 fps | 98.1% |
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 | 225gr | Hornady InterLock. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,740 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,740 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 54–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:16.5 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 | 225gr | Hornady 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.