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:1:13.5
Load data in caliber 8.5 x 55 Blaser with .338 | 225gr | Hornady InterBond 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 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% | 54,969 psi | 88% | 2484 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 53,113 psi | 85% | 2503 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,970 psi | 90% | 2543 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,708 psi | 88% | 2562 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 55,419 psi | 89% | 2579 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,514 psi | 76% | 2546 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 82% | 54,404 psi | 87% | 2431 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,810 psi | 88% | 2451 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,780 psi | 86% | 2569 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 96% | 54,752 psi | 88% | 2566 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 82% | 55,216 psi | 89% | 2543 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 53,040 psi | 85% | 2526 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 52,924 psi | 85% | 2507 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,795 psi | 88% | 2621 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 52,982 psi | 85% | 2667 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 53,983 psi | 87% | 2582 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,824 psi | 88% | 2487 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,955 psi | 88% | 2605 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,210 psi | 76% | 2556 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,549 psi | 87% | 2694 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,286 psi | 53% | 2303 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,592 psi | 86% | 2434 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 53,272 psi | 85% | 2582 fps | 99.2% |
| Bofors RP3 | <<locked>> | 96% | 54,259 psi | 87% | 2598 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 55,216 psi | 89% | 2562 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,114 psi | 88% | 2513 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,506 psi | 89% | 2605 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 53,490 psi | 86% | 2641 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 84% | 53,722 psi | 86% | 2523 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,897 psi | 88% | 2552 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,999 psi | 90% | 2612 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 50,966 psi | 82% | 2592 fps | 96.4% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 55,854 psi | 90% | 2612 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 90% | 54,273 psi | 87% | 2579 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,323 psi | 69% | 2448 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 52,939 psi | 85% | 2608 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,867 psi | 56% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,651 psi | 89% | 2582 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 53,621 psi | 86% | 2562 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,099 psi | 87% | 2549 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,824 psi | 88% | 2530 fps | 96.9% |
| IMR 4198 | <<locked>> | 84% | 55,201 psi | 89% | 2448 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,838 psi | 86% | 2546 fps | 96.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,295 psi | 73% | 2493 fps | 98% |
| IMR 4895 | <<locked>> | 94% | 56,391 psi | 90% | 2635 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 53,040 psi | 85% | 2526 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 53,214 psi | 85% | 2516 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 56,420 psi | 90% | 2592 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,085 psi | 87% | 2507 fps | 99.7% |
| Lovex S062 | <<locked>> | 94% | 53,853 psi | 86% | 2549 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,649 psi | 84% | 2539 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,893 psi | 80% | 2516 fps | 96.3% |
| Norma 201 | <<locked>> | 92% | 55,927 psi | 90% | 2566 fps | 100% |
| Norma 202 | <<locked>> | 92% | 56,333 psi | 90% | 2569 fps | 100% |
| Norma 203B | <<locked>> | 94% | 54,099 psi | 87% | 2595 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 47,253 psi | 76% | 2539 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 94% | 54,447 psi | 87% | 2618 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,630 psi | 75% | 2530 fps | 96.3% |
| Ramshot TAC | <<locked>> | 88% | 53,563 psi | 86% | 2543 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 90% | 56,130 psi | 90% | 2608 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,418 psi | 87% | 2533 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,259 psi | 57% | 1562 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 56,115 psi | 90% | 2556 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 53,055 psi | 85% | 2546 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,723 psi | 88% | 2664 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,273 psi | 87% | 2694 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,152 psi | 76% | 2566 fps | 98% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,138 psi | 77% | 2582 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 88% | 53,664 psi | 86% | 2507 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 56,347 psi | 90% | 2562 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 54,114 psi | 87% | 2589 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 55,216 psi | 89% | 2562 fps | 96.4% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,649 psi | 84% | 2539 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,420 psi | 90% | 2592 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,853 psi | 86% | 2549 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,893 psi | 80% | 2516 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 56,159 psi | 90% | 2533 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,448 psi | 89% | 2552 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,999 psi | 90% | 2648 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,738 psi | 89% | 2507 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,245 psi | 89% | 2569 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,434 psi | 89% | 2589 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,636 psi | 88% | 2470 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 54,389 psi | 87% | 2467 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 53,098 psi | 85% | 2497 fps | 96.6% |
| Somchem S321 | <<locked>> | 86% | 54,201 psi | 87% | 2562 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 53,867 psi | 86% | 2470 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,491 psi | 87% | 2562 fps | 99.7% |
| Somchem S355 | <<locked>> | 98% | 54,810 psi | 88% | 2589 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,264 psi | 68% | 2497 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 86% | 54,549 psi | 87% | 2441 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,607 psi | 88% | 2457 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,651 psi | 89% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 53,417 psi | 86% | 2507 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,144 psi | 90% | 2569 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,980 psi | 80% | 2543 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 88% | 53,621 psi | 86% | 2530 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 55,042 psi | 88% | 2549 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,950 psi | 78% | 2546 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,201 psi | 56% | 2372 fps | 95.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,010 psi | 82% | 2530 fps | 99.8% |
| Winchester 748 | <<locked>> | 88% | 52,692 psi | 84% | 2569 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 51,256 psi | 82% | 2598 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,172 psi | 88% | 2598 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% | 42,989 psi | 69% | 2320 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,688 psi | 75% | 2418 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,433 psi | 57% | 2244 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,829 psi | 67% | 2375 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 33,533 psi | 54% | 2234 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 36,027 psi | 58% | 2346 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 51,285 psi | 82% | 2388 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,692 psi | 83% | 2411 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,334 psi | 63% | 2333 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 33,504 psi | 54% | 2195 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 51,706 psi | 83% | 2497 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,350 psi | 66% | 2343 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 40,712 psi | 65% | 2343 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,993 psi | 77% | 2523 fps | 99.6% |
| Alliant Power Pro 2000-MR | 50.1 gr | 80% | 35,505 psi | 57% | 2343 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,808 psi | 53% | 2218 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,588 psi | 78% | 2405 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,244 psi | 57% | 2270 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,072 psi | 59% | 2359 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,213 psi | 52% | 2277 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,430 psi | 50% | 2257 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,198 psi | 80% | 2388 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,218 psi | 61% | 2329 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 31,966 psi | 51% | 2215 fps | 96.7% |
| Bofors RP7 | <<locked>> | 96% | 48,776 psi | 78% | 2467 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,424 psi | 70% | 2339 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,595 psi | 63% | 2362 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,482 psi | 70% | 2480 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 47,326 psi | 76% | 2438 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,790 psi | 77% | 2457 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 37,884 psi | 61% | 2316 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 98% | 47,747 psi | 77% | 2543 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 98% | 52,373 psi | 84% | 2562 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 39,668 psi | 64% | 2343 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 31,807 psi | 51% | 2215 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,534 psi | 57% | 2310 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,831 psi | 41% | 1358 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,276 psi | 61% | 2303 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 38,711 psi | 62% | 2346 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,114 psi | 56% | 2228 fps | 96% |
| IMR 4166 Enduron | <<locked>> | 88% | 48,399 psi | 78% | 2434 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 49,139 psi | 79% | 2372 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,790 psi | 77% | 2454 fps | 95.3% |
| IMR 4831 | <<locked>> | 92% | 34,954 psi | 56% | 2303 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 36,071 psi | 58% | 2297 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 80% | 41,350 psi | 66% | 2343 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 46,528 psi | 75% | 2425 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 37,956 psi | 61% | 2316 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 39,958 psi | 64% | 2280 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 34,838 psi | 56% | 2231 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 41,307 psi | 66% | 2356 fps | 95.4% |
| Lovex S070 | <<locked>> | 98% | 47,050 psi | 75% | 2474 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 38,638 psi | 62% | 2293 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 38,827 psi | 62% | 2310 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 34,650 psi | 56% | 2260 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 36,782 psi | 59% | 2349 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 34,069 psi | 55% | 2267 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 98% | 43,787 psi | 70% | 2480 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 41,249 psi | 66% | 2343 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,321 psi | 65% | 2362 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,788 psi | 72% | 2388 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,281 psi | 42% | 1394 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,340 psi | 74% | 2421 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 43,685 psi | 70% | 2398 fps | 95.2% |
| ReloadSwiss RS 52 | 48.6 gr | 80% | 36,463 psi | 58% | 2356 fps | 96.4% |
| ReloadSwiss RS 60 | 49.3 gr | 80% | 30,095 psi | 48% | 2228 fps | 97.4% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,522 psi | 62% | 2411 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 42,119 psi | 68% | 2474 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 42,540 psi | 68% | 2339 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,753 psi | 59% | 2251 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 30,110 psi | 48% | 2165 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 96% | 48,776 psi | 78% | 2467 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 92% | 41,307 psi | 66% | 2356 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,956 psi | 61% | 2316 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 34,838 psi | 56% | 2231 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 98% | 47,050 psi | 75% | 2474 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,110 psi | 79% | 2438 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,808 psi | 83% | 2507 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,402 psi | 54% | 2257 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,327 psi | 79% | 2425 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,349 psi | 63% | 2316 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,014 psi | 61% | 2306 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,335 psi | 65% | 2264 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,214 psi | 53% | 2142 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 46,601 psi | 75% | 2405 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 44,382 psi | 71% | 2415 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 39,784 psi | 64% | 2264 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,972 psi | 62% | 2316 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 31,241 psi | 50% | 2175 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 27,238 psi | 44% | 2152 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 45,730 psi | 73% | 2323 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,509 psi | 65% | 2260 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,897 psi | 58% | 2244 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,564 psi | 59% | 2247 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,588 psi | 47% | 2119 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 90% | 36,230 psi | 58% | 2300 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 41,249 psi | 66% | 2339 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 35,070 psi | 56% | 2238 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 37,826 psi | 61% | 2352 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 98% | 33,141 psi | 53% | 2326 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,256 psi | 52% | 2188 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 40,321 psi | 65% | 2379 fps | 99.5% |
| Winchester 760 | <<locked>> | 98% | 48,022 psi | 77% | 2546 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,115 psi | 60% | 2306 fps | 97.7% |
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 | 225gr | Hornady InterBond. Alliant Reloder-17 delivers the highest muzzle velocity at 2,694 fps; across all powders the maximum-charge window runs from 1,526 fps to 2,694 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 53–90 %, leaving at least 10 % headroom. The 225.0 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-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 InterBond 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.