Load Specifications
Bullet:.338 | 225gr | Barnes TSX FB
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:1:13.5
Load data in caliber 8.5 x 55 Blaser with .338 | 225gr | Barnes TSX FB bullet and 99 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 LEVERevolution.
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.
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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% | 55,927 psi | 90% | 2493 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 54,563 psi | 87% | 2523 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 52,707 psi | 85% | 2507 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 56,014 psi | 90% | 2575 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 54,404 psi | 87% | 2507 fps | 95.7% |
| Accurate 4064 | <<locked>> | 98% | 56,086 psi | 90% | 2589 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,933 psi | 72% | 2507 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 84% | 56,086 psi | 90% | 2448 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 53,214 psi | 85% | 2428 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 55,201 psi | 89% | 2585 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 98% | 56,202 psi | 90% | 2582 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 82% | 53,069 psi | 85% | 2516 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 54,505 psi | 87% | 2546 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 54,215 psi | 87% | 2523 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 56,130 psi | 90% | 2641 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 54,723 psi | 88% | 2690 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 55,187 psi | 88% | 2598 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 56,101 psi | 90% | 2503 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 56,246 psi | 90% | 2621 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,295 psi | 73% | 2516 fps | 97.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 52,199 psi | 84% | 2657 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 55,143 psi | 88% | 2448 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 54,882 psi | 88% | 2602 fps | 99.2% |
| Bofors RP3 | <<locked>> | 98% | 55,332 psi | 89% | 2612 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 52,968 psi | 85% | 2530 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 53,505 psi | 86% | 2490 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 53,098 psi | 85% | 2572 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 54,984 psi | 88% | 2657 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 86% | 55,245 psi | 89% | 2543 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 52,852 psi | 85% | 2526 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 53,621 psi | 86% | 2575 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 92% | 55,738 psi | 89% | 2595 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,292 psi | 66% | 2411 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 54,128 psi | 87% | 2621 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,606 psi | 55% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 53,766 psi | 86% | 2552 fps | 99.8% |
| IMR 3031 | <<locked>> | 92% | 54,998 psi | 88% | 2579 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 55,448 psi | 89% | 2562 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 94% | 56,333 psi | 90% | 2546 fps | 97% |
| IMR 4198 | <<locked>> | 84% | 53,374 psi | 86% | 2425 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 55,332 psi | 89% | 2562 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,033 psi | 69% | 2457 fps | 97.4% |
| IMR 4895 | <<locked>> | 94% | 53,925 psi | 86% | 2602 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 90% | 54,505 psi | 87% | 2546 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 54,375 psi | 87% | 2533 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 54,070 psi | 87% | 2562 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 55,434 psi | 89% | 2520 fps | 99.8% |
| Lovex S062 | <<locked>> | 96% | 54,911 psi | 88% | 2562 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 50,415 psi | 81% | 2503 fps | 97.4% |
| Norma 200 | <<locked>> | 82% | 55,550 psi | 89% | 2474 fps | 100% |
| Norma 201 | <<locked>> | 92% | 53,635 psi | 86% | 2533 fps | 100% |
| Norma 202 | <<locked>> | 92% | 54,157 psi | 87% | 2539 fps | 100% |
| Norma 203B | <<locked>> | 96% | 55,259 psi | 89% | 2608 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 45,034 psi | 72% | 2500 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 96% | 55,811 psi | 89% | 2635 fps | 99.8% |
| Ramshot TAC | <<locked>> | 90% | 55,143 psi | 88% | 2562 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 54,201 psi | 87% | 2579 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 88% | 55,941 psi | 90% | 2549 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,693 psi | 56% | 1549 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 54,404 psi | 87% | 2533 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 54,375 psi | 87% | 2559 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 56,333 psi | 90% | 2684 fps | 99.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 55,840 psi | 90% | 2713 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,730 psi | 72% | 2523 fps | 97.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,064 psi | 74% | 2543 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 90% | 54,578 psi | 88% | 2516 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 54,099 psi | 87% | 2530 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 54,911 psi | 88% | 2598 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 52,968 psi | 85% | 2530 fps | 95.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 50,415 psi | 81% | 2503 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 92% | 54,070 psi | 87% | 2562 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 54,911 psi | 88% | 2562 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 54,186 psi | 87% | 2503 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 53,345 psi | 86% | 2526 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 53,795 psi | 86% | 2615 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 53,838 psi | 86% | 2480 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 52,924 psi | 85% | 2536 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 53,505 psi | 86% | 2559 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 56,246 psi | 90% | 2487 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 55,506 psi | 89% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 50,865 psi | 82% | 2464 fps | 96% |
| Somchem S321 | <<locked>> | 88% | 55,666 psi | 89% | 2579 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 54,926 psi | 88% | 2484 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 56,130 psi | 90% | 2579 fps | 99.8% |
| Somchem S355ᴾ | <<locked>> | 100% | 55,651 psi | 89% | 2598 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,190 psi | 64% | 2457 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 88% | 55,999 psi | 90% | 2457 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 56,159 psi | 90% | 2474 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 53,316 psi | 85% | 2503 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 54,636 psi | 88% | 2520 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,853 psi | 86% | 2536 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,805 psi | 77% | 2507 fps | 98% |
| Vihtavuori N530 | <<locked>> | 90% | 55,201 psi | 89% | 2546 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 56,318 psi | 90% | 2562 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,557 psi | 75% | 2507 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,008 psi | 79% | 2497 fps | 99.6% |
| Winchester 748 | <<locked>> | 90% | 54,157 psi | 87% | 2589 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 48,863 psi | 78% | 2556 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 52,924 psi | 85% | 2566 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% | 40,930 psi | 66% | 2290 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,353 psi | 71% | 2382 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,953 psi | 53% | 2205 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,566 psi | 63% | 2339 fps | 99.7% |
| Accurate 2700 | <<locked>> | 92% | 50,937 psi | 82% | 2457 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 31,227 psi | 50% | 2192 fps | 99.1% |
| Accurate 4350 | <<locked>> | 94% | 36,201 psi | 58% | 2349 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 49,690 psi | 80% | 2365 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,082 psi | 80% | 2385 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 37,594 psi | 60% | 2297 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 34,200 psi | 55% | 2211 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 49,559 psi | 79% | 2467 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,653 psi | 64% | 2313 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 38,682 psi | 62% | 2313 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,934 psi | 74% | 2490 fps | 99.3% |
| Alliant Power Pro 2000-MR | 50.5 gr | 82% | 36,332 psi | 58% | 2359 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,009 psi | 50% | 2182 fps | 96.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,557 psi | 75% | 2379 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,489 psi | 54% | 2231 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 37,608 psi | 60% | 2369 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 86% | 32,634 psi | 52% | 2287 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 48,472 psi | 78% | 2365 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,448 psi | 58% | 2293 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 30,008 psi | 48% | 2172 fps | 95.8% |
| Bofors RP7 | <<locked>> | 98% | 49,850 psi | 80% | 2484 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,771 psi | 67% | 2310 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,579 psi | 60% | 2323 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,524 psi | 67% | 2448 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 80% | 45,469 psi | 73% | 2408 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,050 psi | 74% | 2428 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 38,406 psi | 62% | 2329 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 37,826 psi | 61% | 2310 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,010 psi | 51% | 2221 fps | 95.6% |
| Hodgdon LEVERevolution | 48.3 gr | 80% | 33,866 psi | 54% | 2277 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,628 psi | 41% | 1352 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,637 psi | 59% | 2270 fps | 97.4% |
| IMR 3031 | <<locked>> | 80% | 36,941 psi | 59% | 2316 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,663 psi | 54% | 2195 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,644 psi | 75% | 2402 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 47,340 psi | 76% | 2346 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 48,892 psi | 78% | 2467 fps | 95.4% |
| IMR 4831 | <<locked>> | 94% | 35,404 psi | 57% | 2313 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 34,229 psi | 55% | 2260 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 39,653 psi | 64% | 2313 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 44,222 psi | 71% | 2388 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 35,723 psi | 57% | 2277 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 38,580 psi | 62% | 2254 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 33,199 psi | 53% | 2201 fps | 97.3% |
| Lovex S065 | <<locked>> | 94% | 41,829 psi | 67% | 2365 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 52,301 psi | 84% | 2434 fps | 100% |
| Norma 201 | <<locked>> | 80% | 36,724 psi | 59% | 2257 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 36,985 psi | 59% | 2277 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 32,866 psi | 53% | 2224 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 37,173 psi | 60% | 2356 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 32,343 psi | 52% | 2228 fps | 95% |
| Ramshot TAC | <<locked>> | 82% | 42,293 psi | 68% | 2362 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,638 psi | 62% | 2329 fps | 97.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,917 psi | 69% | 2356 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,788 psi | 41% | 1385 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,599 psi | 72% | 2392 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 44,657 psi | 72% | 2411 fps | 95.3% |
| ReloadSwiss RS 52 | 47.7 gr | 80% | 34,505 psi | 55% | 2313 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,631 psi | 46% | 2188 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 39,044 psi | 63% | 2421 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 40,321 psi | 65% | 2434 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 40,350 psi | 65% | 2303 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 35,012 psi | 56% | 2218 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 30,298 psi | 49% | 2172 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 98% | 49,850 psi | 80% | 2484 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 41,829 psi | 67% | 2365 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,723 psi | 57% | 2277 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 33,199 psi | 53% | 2201 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 47,108 psi | 76% | 2405 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,995 psi | 80% | 2480 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 33,837 psi | 54% | 2267 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,427 psi | 76% | 2395 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 39,972 psi | 64% | 2329 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,143 psi | 58% | 2270 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,580 psi | 62% | 2231 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,589 psi | 51% | 2110 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 47,340 psi | 76% | 2411 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 42,380 psi | 68% | 2382 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 37,956 psi | 61% | 2234 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 37,086 psi | 59% | 2280 fps | 96.9% |
| Somchem S355 | <<locked>> | 82% | 31,386 psi | 50% | 2182 fps | 95.7% |
| Somchem S365 | <<locked>> | 88% | 27,340 psi | 44% | 2159 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 43,874 psi | 70% | 2297 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,754 psi | 62% | 2234 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,881 psi | 54% | 2211 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,853 psi | 56% | 2218 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 27,876 psi | 45% | 2083 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 92% | 36,869 psi | 59% | 2313 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 39,494 psi | 63% | 2306 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 33,402 psi | 54% | 2205 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 94% | 38,247 psi | 61% | 2362 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,763 psi | 49% | 2152 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 38,522 psi | 62% | 2346 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 45,948 psi | 74% | 2510 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,215 psi | 56% | 2270 fps | 97.1% |
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 99 powders for 8.5 x 55 Blaser loaded with the .338 | 225gr | Barnes TSX FB. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,713 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,713 fps. Accurate 4350 gives the best case fill at 100 %, and 99 of the 99 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 1:13.5 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, Hodgdon LEVERevolution rank at the top here: for 8.5 x 55 Blaser with the .338 | 225gr | Barnes TSX FB 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.