Load Specifications
Bullet:.338 | 210gr | Barnes X BT
Bullet Manufacturer:Barnes
Bullet Weight:210 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:1:14.0
Load data in caliber 8.5 x 55 Blaser with .338 | 210gr | Barnes X BT bullet and 98 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.
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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>> | 88% | 56,333 psi | 90% | 2575 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,998 psi | 88% | 2602 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,013 psi | 88% | 2602 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,202 psi | 90% | 2654 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 54,244 psi | 87% | 2638 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,849 psi | 78% | 2635 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 82% | 55,027 psi | 88% | 2513 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,434 psi | 89% | 2536 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,969 psi | 88% | 2657 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 96% | 55,172 psi | 88% | 2644 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 82% | 55,869 psi | 90% | 2631 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,099 psi | 87% | 2615 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 88% | 54,027 psi | 87% | 2602 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,695 psi | 89% | 2713 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 53,664 psi | 86% | 2753 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,042 psi | 88% | 2674 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,072 psi | 90% | 2579 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,738 psi | 89% | 2690 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,863 psi | 77% | 2631 fps | 97.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 55,042 psi | 88% | 2776 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,128 psi | 87% | 2516 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,012 psi | 87% | 2664 fps | 98.7% |
| Bofors RP3 | <<locked>> | 96% | 55,651 psi | 89% | 2687 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,202 psi | 90% | 2644 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,159 psi | 90% | 2602 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 56,231 psi | 90% | 2690 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,143 psi | 87% | 2726 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 84% | 54,520 psi | 87% | 2612 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,593 psi | 89% | 2638 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,374 psi | 86% | 2644 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 90% | 55,405 psi | 89% | 2671 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,440 psi | 71% | 2530 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 53,679 psi | 86% | 2694 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,273 psi | 57% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,376 psi | 90% | 2667 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 54,723 psi | 88% | 2657 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,071 psi | 88% | 2635 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,680 psi | 89% | 2612 fps | 96.2% |
| IMR 4198 | <<locked>> | 84% | 55,521 psi | 89% | 2533 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 54,520 psi | 87% | 2625 fps | 95.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,499 psi | 75% | 2579 fps | 97.5% |
| IMR 4895 | <<locked>> | 92% | 53,737 psi | 86% | 2674 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 88% | 54,099 psi | 87% | 2615 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 54,723 psi | 88% | 2608 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,317 psi | 87% | 2641 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,781 psi | 88% | 2589 fps | 99.5% |
| Lovex S062 | <<locked>> | 94% | 54,940 psi | 88% | 2638 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,838 psi | 86% | 2625 fps | 97.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,111 psi | 82% | 2602 fps | 95.6% |
| Norma 201 | <<locked>> | 90% | 54,172 psi | 87% | 2612 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 54,085 psi | 87% | 2615 fps | 100% |
| Norma 203B | <<locked>> | 94% | 54,868 psi | 88% | 2680 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 48,211 psi | 77% | 2621 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 94% | 55,027 psi | 88% | 2703 fps | 99.4% |
| Ramshot TAC | <<locked>> | 88% | 54,462 psi | 87% | 2625 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 53,345 psi | 86% | 2641 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,100 psi | 88% | 2615 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,766 psi | 57% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,824 psi | 86% | 2602 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,012 psi | 87% | 2628 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 55,405 psi | 89% | 2749 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,085 psi | 88% | 2782 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,080 psi | 77% | 2648 fps | 97.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,153 psi | 79% | 2664 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 88% | 55,898 psi | 90% | 2605 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,534 psi | 87% | 2608 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 98% | 55,506 psi | 89% | 2680 fps | 99.8% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,202 psi | 90% | 2644 fps | 95.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,838 psi | 86% | 2625 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,317 psi | 87% | 2641 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,940 psi | 88% | 2638 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,111 psi | 82% | 2602 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,548 psi | 86% | 2572 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,217 psi | 90% | 2641 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,185 psi | 85% | 2684 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,359 psi | 86% | 2552 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,115 psi | 90% | 2651 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,217 psi | 90% | 2674 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,535 psi | 89% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 54,955 psi | 88% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,070 psi | 87% | 2575 fps | 95.9% |
| Somchem S321 | <<locked>> | 86% | 55,347 psi | 89% | 2651 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,013 psi | 88% | 2559 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,245 psi | 89% | 2644 fps | 99.4% |
| Somchem S355 | <<locked>> | 98% | 55,709 psi | 89% | 2674 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,453 psi | 70% | 2582 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 86% | 55,608 psi | 89% | 2530 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,347 psi | 89% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,476 psi | 86% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,172 psi | 87% | 2592 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 53,853 psi | 86% | 2612 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,778 psi | 81% | 2621 fps | 98% |
| Vihtavuori N530 | <<locked>> | 88% | 54,433 psi | 87% | 2612 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 55,738 psi | 89% | 2635 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,922 psi | 80% | 2628 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,648 psi | 83% | 2608 fps | 99.5% |
| Winchester 748 | <<locked>> | 88% | 53,548 psi | 86% | 2657 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,970 psi | 90% | 2684 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% | 44,614 psi | 72% | 2411 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,559 psi | 78% | 2510 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,435 psi | 62% | 2352 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,540 psi | 70% | 2467 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 36,260 psi | 58% | 2339 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 37,710 psi | 60% | 2434 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 52,083 psi | 84% | 2474 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,402 psi | 84% | 2493 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,828 psi | 65% | 2418 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 37,043 psi | 59% | 2329 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 52,504 psi | 84% | 2585 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,612 psi | 68% | 2428 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 42,061 psi | 67% | 2434 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,168 psi | 79% | 2612 fps | 99.3% |
| Alliant Power Pro 2000-MR | 51.9 gr | 82% | 39,204 psi | 63% | 2480 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,272 psi | 55% | 2306 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,864 psi | 80% | 2497 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,869 psi | 59% | 2359 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 94% | 40,538 psi | 65% | 2487 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,620 psi | 54% | 2359 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,850 psi | 82% | 2470 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,363 psi | 63% | 2411 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 34,040 psi | 55% | 2310 fps | 96.5% |
| Bofors RP7 | <<locked>> | 98% | 52,866 psi | 85% | 2595 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,628 psi | 72% | 2425 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,031 psi | 66% | 2448 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,454 psi | 71% | 2566 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 80% | 48,298 psi | 77% | 2526 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,037 psi | 79% | 2546 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 41,930 psi | 67% | 2454 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 41,118 psi | 66% | 2431 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,257 psi | 53% | 2300 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,883 psi | 59% | 2398 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,411 psi | 42% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,436 psi | 63% | 2385 fps | 97.4% |
| IMR 3031 | <<locked>> | 80% | 40,161 psi | 64% | 2438 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,593 psi | 59% | 2313 fps | 95.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 52,504 psi | 84% | 2562 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 49,734 psi | 80% | 2457 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 51,445 psi | 82% | 2579 fps | 95.3% |
| IMR 4831 | <<locked>> | 94% | 38,856 psi | 62% | 2441 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,637 psi | 60% | 2388 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 80% | 42,612 psi | 68% | 2428 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 48,269 psi | 77% | 2513 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 39,798 psi | 64% | 2411 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 41,176 psi | 66% | 2362 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 36,724 psi | 59% | 2326 fps | 97.6% |
| Lovex S065 | <<locked>> | 94% | 45,339 psi | 73% | 2487 fps | 95.5% |
| Lovex S070 | <<locked>> | 98% | 48,399 psi | 78% | 2559 fps | 95% |
| Norma 201 | <<locked>> | 80% | 40,596 psi | 65% | 2385 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 40,190 psi | 64% | 2395 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 36,289 psi | 58% | 2349 fps | 96.1% |
| Norma URP | <<locked>> | 94% | 40,408 psi | 65% | 2480 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 35,433 psi | 57% | 2352 fps | 95.4% |
| Ramshot TAC | <<locked>> | 82% | 45,179 psi | 72% | 2474 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,684 psi | 67% | 2448 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,934 psi | 74% | 2470 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,731 psi | 43% | 1447 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,442 psi | 76% | 2507 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,747 psi | 77% | 2526 fps | 95.3% |
| ReloadSwiss RS 52 | 49.1 gr | 80% | 37,840 psi | 61% | 2444 fps | 95.9% |
| ReloadSwiss RS 60 | 49.8 gr | 80% | 31,604 psi | 51% | 2316 fps | 97% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,987 psi | 64% | 2497 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,221 psi | 69% | 2552 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 44,686 psi | 72% | 2434 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 38,783 psi | 62% | 2343 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 32,242 psi | 52% | 2260 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 98% | 52,866 psi | 85% | 2595 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 94% | 45,339 psi | 73% | 2487 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,798 psi | 64% | 2411 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 36,724 psi | 59% | 2326 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 98% | 48,399 psi | 78% | 2559 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,111 psi | 80% | 2520 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,011 psi | 85% | 2595 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,824 psi | 56% | 2343 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,053 psi | 80% | 2507 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,988 psi | 66% | 2405 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,305 psi | 63% | 2392 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,669 psi | 67% | 2346 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,519 psi | 55% | 2224 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 50,720 psi | 81% | 2530 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 45,701 psi | 73% | 2503 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 41,437 psi | 66% | 2352 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,176 psi | 64% | 2398 fps | 97% |
| Somchem S355 | <<locked>> | 80% | 33,170 psi | 53% | 2267 fps | 95.5% |
| Somchem S365 | <<locked>> | 88% | 30,719 psi | 49% | 2293 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 46,833 psi | 75% | 2408 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,626 psi | 67% | 2343 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,420 psi | 60% | 2333 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,072 psi | 61% | 2336 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 31,372 psi | 50% | 2211 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 92% | 39,827 psi | 64% | 2431 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 42,598 psi | 68% | 2425 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 36,651 psi | 59% | 2326 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 39,102 psi | 63% | 2438 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,750 psi | 54% | 2274 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 41,495 psi | 67% | 2464 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,464 psi | 62% | 2392 fps | 97.3% |
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 98 powders for 8.5 x 55 Blaser loaded with the .338 | 210gr | Barnes X BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,782 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,782 fps. Accurate 4350 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 210.0 gr projectile in 0.338" calls for a 1:14.0 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 60, ReloadSwiss RS 52 rank at the top here: for 8.5 x 55 Blaser with the .338 | 210gr | Barnes X BT 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.