Load Specifications
Bullet Manufacturer:Speer
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:1:16.0
Load data in caliber 8.5 x 55 Blaser with .338 | 225gr | Speer Deep Curl Soft Point bullet and 104 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% | 53,635 psi | 86% | 2484 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,593 psi | 89% | 2552 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,940 psi | 88% | 2543 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,621 psi | 86% | 2562 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,868 psi | 88% | 2539 fps | 96.4% |
| Accurate 4064 | <<locked>> | 94% | 54,752 psi | 88% | 2585 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,198 psi | 80% | 2602 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 56,173 psi | 90% | 2467 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,057 psi | 90% | 2618 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 53,476 psi | 86% | 2566 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,071 psi | 88% | 2572 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,564 psi | 89% | 2549 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,548 psi | 86% | 2625 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,506 psi | 89% | 2726 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,084 psi | 85% | 2589 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,417 psi | 86% | 2484 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,824 psi | 86% | 2608 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,182 psi | 79% | 2605 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,374 psi | 86% | 2697 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,911 psi | 56% | 2359 fps | 97% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,390 psi | 89% | 2470 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,825 psi | 90% | 2635 fps | 99.5% |
| Bofors RP3 | <<locked>> | 94% | 53,272 psi | 85% | 2598 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 53,867 psi | 86% | 2566 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,867 psi | 86% | 2513 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,983 psi | 87% | 2602 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,202 psi | 90% | 2694 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 55,840 psi | 90% | 2566 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,359 psi | 86% | 2549 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,839 psi | 88% | 2615 fps | 99.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,505 psi | 86% | 2651 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 98% | 54,781 psi | 88% | 2618 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 53,040 psi | 85% | 2579 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,310 psi | 73% | 2497 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,419 psi | 89% | 2657 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,621 psi | 88% | 2684 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,969 psi | 56% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,418 psi | 87% | 2582 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 56,086 psi | 90% | 2608 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,347 psi | 90% | 2595 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,490 psi | 86% | 2533 fps | 97% |
| IMR 4198 | <<locked>> | 82% | 53,838 psi | 86% | 2448 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 50,662 psi | 81% | 2543 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,898 psi | 90% | 2598 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,747 psi | 77% | 2549 fps | 98.6% |
| IMR 4895 | <<locked>> | 92% | 55,187 psi | 88% | 2638 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 55,071 psi | 88% | 2572 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,288 psi | 89% | 2559 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,245 psi | 89% | 2595 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,028 psi | 90% | 2552 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 55,840 psi | 90% | 2592 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,042 psi | 88% | 2592 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,185 psi | 84% | 2572 fps | 97.1% |
| Norma 201 | <<locked>> | 90% | 54,824 psi | 88% | 2569 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,259 psi | 89% | 2569 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,318 psi | 90% | 2641 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 49,661 psi | 80% | 2592 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 92% | 53,316 psi | 85% | 2621 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,849 psi | 78% | 2585 fps | 97.1% |
| Ramshot TAC | <<locked>> | 88% | 55,419 psi | 89% | 2589 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,810 psi | 88% | 2605 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,736 psi | 85% | 2530 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,375 psi | 57% | 1578 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,839 psi | 88% | 2556 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,143 psi | 88% | 2592 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,954 psi | 87% | 2667 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,214 psi | 85% | 2697 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,676 psi | 80% | 2621 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,430 psi | 81% | 2644 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 88% | 55,724 psi | 89% | 2549 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,216 psi | 89% | 2566 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 53,127 psi | 85% | 2592 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 53,867 psi | 86% | 2566 fps | 96.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,042 psi | 88% | 2592 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,245 psi | 89% | 2595 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,840 psi | 90% | 2592 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,185 psi | 84% | 2572 fps | 97.1% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,418 psi | 87% | 2530 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,027 psi | 88% | 2651 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,273 psi | 87% | 2503 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,853 psi | 86% | 2569 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,404 psi | 87% | 2592 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,359 psi | 86% | 2470 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,260 psi | 90% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,477 psi | 89% | 2546 fps | 97.3% |
| Somchem S321 | <<locked>> | 86% | 56,362 psi | 90% | 2605 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,869 psi | 90% | 2513 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,156 psi | 85% | 2559 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 53,795 psi | 86% | 2592 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,483 psi | 71% | 2549 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 86% | 56,376 psi | 90% | 2477 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,447 psi | 86% | 2457 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,418 psi | 87% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,738 psi | 89% | 2549 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,143 psi | 88% | 2572 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,417 psi | 84% | 2595 fps | 99% |
| Vihtavuori N530 | <<locked>> | 88% | 55,651 psi | 89% | 2572 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 53,708 psi | 86% | 2546 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,285 psi | 82% | 2595 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,246 psi | 60% | 2428 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,026 psi | 85% | 2579 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 55,042 psi | 88% | 2615 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,505 psi | 86% | 2651 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,143 psi | 87% | 2602 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% | 44,628 psi | 72% | 2359 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,631 psi | 78% | 2461 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,246 psi | 60% | 2287 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,743 psi | 70% | 2421 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,341 psi | 78% | 2441 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 35,230 psi | 56% | 2280 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 35,621 psi | 57% | 2349 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 52,823 psi | 85% | 2428 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,915 psi | 66% | 2375 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 80% | 34,940 psi | 56% | 2241 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,946 psi | 69% | 2388 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 42,569 psi | 68% | 2382 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,024 psi | 80% | 2569 fps | 99.8% |
| Alliant Power Pro 2000-MR | 52.2 gr | 80% | 36,898 psi | 59% | 2392 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,156 psi | 55% | 2260 fps | 97.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,430 psi | 81% | 2444 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,782 psi | 59% | 2316 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,289 psi | 58% | 2359 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 82% | 31,459 psi | 50% | 2274 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,995 psi | 50% | 2264 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,025 psi | 83% | 2428 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,987 psi | 64% | 2379 fps | 97.1% |
| Bofors RP3 | <<locked>> | 80% | 33,678 psi | 54% | 2264 fps | 97.5% |
| Bofors RP7 | <<locked>> | 94% | 47,645 psi | 76% | 2470 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,005 psi | 72% | 2382 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,336 psi | 66% | 2405 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,295 psi | 73% | 2530 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 80% | 49,211 psi | 79% | 2480 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,937 psi | 80% | 2503 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 36,869 psi | 59% | 2310 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 94% | 43,947 psi | 70% | 2497 fps | 95% |
| Hodgdon H4350 | <<locked>> | 96% | 51,503 psi | 83% | 2569 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 41,278 psi | 66% | 2388 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,270 psi | 50% | 2218 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,101 psi | 59% | 2359 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 96% | 47,456 psi | 76% | 2569 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,063 psi | 42% | 1378 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,784 psi | 64% | 2346 fps | 98.4% |
| IMR 3031 | <<locked>> | 80% | 40,669 psi | 65% | 2388 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,637 psi | 59% | 2274 fps | 96.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,195 psi | 76% | 2434 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 50,807 psi | 81% | 2408 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 47,413 psi | 76% | 2490 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 46,717 psi | 75% | 2457 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 34,519 psi | 55% | 2306 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 37,652 psi | 60% | 2346 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 80% | 42,946 psi | 69% | 2388 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 48,399 psi | 78% | 2467 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,610 psi | 64% | 2359 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 41,452 psi | 66% | 2326 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 36,405 psi | 58% | 2280 fps | 98.4% |
| Lovex S065 | <<locked>> | 90% | 40,640 psi | 65% | 2362 fps | 95.5% |
| Lovex S070 | <<locked>> | 94% | 43,453 psi | 70% | 2431 fps | 95% |
| Norma 201 | <<locked>> | 80% | 40,306 psi | 65% | 2339 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 40,292 psi | 65% | 2349 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,172 psi | 58% | 2306 fps | 97.2% |
| Norma URP | <<locked>> | 90% | 36,230 psi | 58% | 2352 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 35,520 psi | 57% | 2316 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 96% | 43,047 psi | 69% | 2487 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 42,931 psi | 69% | 2392 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,148 psi | 68% | 2408 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,398 psi | 74% | 2431 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,295 psi | 42% | 1411 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,269 psi | 77% | 2464 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,641 psi | 68% | 2395 fps | 95.2% |
| ReloadSwiss RS 52 | 50.6 gr | 80% | 38,087 psi | 61% | 2405 fps | 97.2% |
| ReloadSwiss RS 60 | 51.4 gr | 80% | 31,372 psi | 50% | 2280 fps | 98.3% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 35,505 psi | 57% | 2362 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 38,667 psi | 62% | 2425 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 44,135 psi | 71% | 2382 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,334 psi | 61% | 2297 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 31,647 psi | 51% | 2211 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 47,645 psi | 76% | 2470 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,640 psi | 65% | 2362 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,610 psi | 64% | 2359 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 36,405 psi | 58% | 2280 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 94% | 43,453 psi | 70% | 2431 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,879 psi | 82% | 2480 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,634 psi | 52% | 2254 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,198 psi | 82% | 2464 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,973 psi | 66% | 2365 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,421 psi | 63% | 2349 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,843 psi | 67% | 2303 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,563 psi | 55% | 2182 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 45,484 psi | 73% | 2402 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 46,340 psi | 74% | 2464 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 41,365 psi | 66% | 2306 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,727 psi | 65% | 2365 fps | 98.2% |
| Somchem S355 | <<locked>> | 80% | 32,735 psi | 52% | 2221 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 26,760 psi | 43% | 2152 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 47,326 psi | 76% | 2362 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,047 psi | 67% | 2300 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,478 psi | 60% | 2287 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,174 psi | 61% | 2290 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,966 psi | 50% | 2165 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 35,505 psi | 57% | 2300 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 43,076 psi | 69% | 2385 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 36,709 psi | 59% | 2280 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 37,202 psi | 60% | 2356 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 32,851 psi | 53% | 2333 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,588 psi | 47% | 2139 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 42,163 psi | 68% | 2425 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 44,193 psi | 71% | 2500 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,740 psi | 62% | 2352 fps | 98.3% |
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 | Speer Deep Curl Soft Point. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,726 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 56–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:16.0 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 | 225gr | Speer Deep Curl Soft Point 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.