Load Specifications
Load data in caliber 8.5 x 55 Blaser with .338 | 200gr | Nosler Ballistic Silver Tip bullet and 97 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 CFE223.
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% | 53,983 psi | 87% | 2635 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,302 psi | 87% | 2720 fps | 98.6% |
| Accurate 2230 | <<locked>> | 82% | 55,143 psi | 88% | 2730 fps | 98.9% |
| Accurate 2460 | <<locked>> | 88% | 56,188 psi | 90% | 2703 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 54,346 psi | 87% | 2690 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,838 psi | 86% | 2713 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 53,650 psi | 86% | 2723 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,554 psi | 68% | 2612 fps | 96% |
| Accurate LT-30 | <<locked>> | 84% | 54,317 psi | 87% | 2585 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,694 psi | 88% | 2605 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 56,246 psi | 90% | 2759 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 82% | 55,840 psi | 90% | 2605 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 53,853 psi | 86% | 2703 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 84% | 54,534 psi | 87% | 2700 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 55,680 psi | 89% | 2720 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 54,984 psi | 88% | 2703 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,548 psi | 86% | 2769 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 55,941 psi | 90% | 2864 fps | 98.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 56,057 psi | 90% | 2769 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,940 psi | 86% | 2641 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,693 psi | 86% | 2743 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,308 psi | 69% | 2618 fps | 96% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,734 psi | 80% | 2769 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 53,330 psi | 86% | 2585 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 56,101 psi | 90% | 2772 fps | 98.6% |
| Bofors RP3 | <<locked>> | 98% | 52,852 psi | 85% | 2736 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,723 psi | 88% | 2661 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,302 psi | 87% | 2746 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 90% | 56,260 psi | 90% | 2838 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 86% | 53,069 psi | 85% | 2680 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,215 psi | 87% | 2703 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 54,824 psi | 88% | 2746 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 82% | 56,130 psi | 90% | 2628 fps | 100% |
| Hodgdon H4895 | <<locked>> | 92% | 53,301 psi | 85% | 2720 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,668 psi | 64% | 2516 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 55,288 psi | 89% | 2799 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,345 psi | 55% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,781 psi | 88% | 2723 fps | 99.5% |
| IMR 3031 | <<locked>> | 94% | 55,651 psi | 89% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,258 psi | 85% | 2687 fps | 98.7% |
| IMR 4198 | <<locked>> | 86% | 54,433 psi | 87% | 2605 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 55,013 psi | 88% | 2776 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 92% | 55,680 psi | 89% | 2720 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 82% | 55,999 psi | 90% | 2713 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 56,115 psi | 90% | 2713 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 55,114 psi | 88% | 2740 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 53,388 psi | 86% | 2648 fps | 99% |
| Lovex S062 | <<locked>> | 98% | 55,869 psi | 90% | 2733 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,486 psi | 78% | 2618 fps | 95.7% |
| Norma 200 | <<locked>> | 82% | 53,998 psi | 87% | 2618 fps | 100% |
| Norma 201 | <<locked>> | 94% | 54,998 psi | 88% | 2710 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 55,259 psi | 89% | 2717 fps | 100% |
| Norma 203B | <<locked>> | 98% | 56,260 psi | 90% | 2779 fps | 99.4% |
| Norma URPᴾ | <<locked>> | 100% | 43,250 psi | 69% | 2612 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 96% | 53,301 psi | 85% | 2759 fps | 99% |
| Ramshot TAC | <<locked>> | 90% | 52,866 psi | 85% | 2677 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 92% | 55,405 psi | 89% | 2753 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,838 psi | 86% | 2674 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,635 psi | 56% | 1657 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 55,724 psi | 89% | 2713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 55,709 psi | 89% | 2726 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 53,403 psi | 86% | 2805 fps | 98.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 53,214 psi | 85% | 2838 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 56,173 psi | 90% | 2700 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 55,405 psi | 89% | 2707 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,692 psi | 84% | 2726 fps | 99.4% |
| Shooters World AR Plus | <<locked>> | 82% | 55,999 psi | 90% | 2713 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,486 psi | 78% | 2618 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 94% | 55,114 psi | 88% | 2740 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 55,869 psi | 90% | 2733 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 55,767 psi | 89% | 2680 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 55,143 psi | 88% | 2356 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,926 psi | 88% | 2710 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 54,462 psi | 87% | 2782 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 55,158 psi | 88% | 2664 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,259 psi | 87% | 2707 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 54,839 psi | 88% | 2733 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,027 psi | 87% | 2618 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,316 psi | 85% | 2612 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,403 psi | 86% | 2707 fps | 99.8% |
| Somchem S335 | <<locked>> | 94% | 56,275 psi | 90% | 2661 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,693 psi | 86% | 2703 fps | 99% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,388 psi | 86% | 2723 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,450 psi | 62% | 2559 fps | 98% |
| Vihtavuori N120 | <<locked>> | 82% | 55,724 psi | 89% | 2556 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 54,070 psi | 87% | 2595 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,824 psi | 86% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 54,128 psi | 87% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 55,811 psi | 89% | 2697 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,735 psi | 83% | 2664 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,571 psi | 73% | 2615 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 92% | 56,376 psi | 90% | 2720 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 96% | 54,012 psi | 87% | 2694 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,454 psi | 71% | 2615 fps | 96% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,847 psi | 75% | 2605 fps | 98.5% |
| Winchester 748 | <<locked>> | 92% | 55,347 psi | 89% | 2766 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 54,346 psi | 87% | 2743 fps | 99.5% |
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% | 39,668 psi | 64% | 2418 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,865 psi | 82% | 2664 fps | 98.1% |
| Accurate 2230 | <<locked>> | 80% | 51,387 psi | 82% | 2674 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 43,033 psi | 69% | 2510 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 32,068 psi | 51% | 2323 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 38,276 psi | 61% | 2457 fps | 98.9% |
| Accurate 4064 | <<locked>> | 80% | 30,327 psi | 49% | 2300 fps | 97.9% |
| Accurate 4350 | <<locked>> | 98% | 39,668 psi | 64% | 2556 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 48,109 psi | 77% | 2497 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,486 psi | 78% | 2516 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 36,419 psi | 58% | 2408 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 52,344 psi | 84% | 2559 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 39,711 psi | 64% | 2461 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 47,601 psi | 76% | 2598 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,421 psi | 62% | 2428 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 80% | 36,927 psi | 59% | 2438 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,222 psi | 71% | 2612 fps | 98.2% |
| Alliant Power Pro 2000-MR | 54.7 gr | 86% | 39,929 psi | 64% | 2572 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 31,879 psi | 51% | 2333 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,078 psi | 72% | 2513 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,912 psi | 59% | 2441 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 98% | 40,872 psi | 66% | 2569 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 90% | 35,955 psi | 58% | 2493 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,891 psi | 75% | 2493 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,248 psi | 65% | 2510 fps | 95.4% |
| Bofors RP3 | <<locked>> | 84% | 33,185 psi | 53% | 2379 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,451 psi | 65% | 2428 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,230 psi | 58% | 2434 fps | 97.5% |
| Hodgdon CFE223 | 52.1 gr | 80% | 39,827 psi | 64% | 2552 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 80% | 43,584 psi | 70% | 2533 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,150 psi | 71% | 2552 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 42,105 psi | 68% | 2536 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 52,953 psi | 85% | 2585 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 36,666 psi | 59% | 2421 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 34,911 psi | 56% | 2411 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,648 psi | 52% | 2379 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,527 psi | 41% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,317 psi | 57% | 2375 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 35,360 psi | 57% | 2431 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 36,869 psi | 59% | 2398 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 45,716 psi | 73% | 2480 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 35,389 psi | 57% | 2421 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 38,421 psi | 62% | 2428 fps | 97.4% |
| Lovex D073.4 | <<locked>> | 80% | 52,214 psi | 84% | 2661 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 42,569 psi | 68% | 2507 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 34,418 psi | 55% | 2388 fps | 98.1% |
| Lovex S060 | <<locked>> | 80% | 37,405 psi | 60% | 2362 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 32,155 psi | 52% | 2306 fps | 95.6% |
| Lovex S065 | <<locked>> | 98% | 45,527 psi | 73% | 2569 fps | 95% |
| Norma 200 | <<locked>> | 80% | 50,662 psi | 81% | 2572 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,650 psi | 57% | 2372 fps | 96.8% |
| Norma 202 | <<locked>> | 80% | 35,621 psi | 57% | 2388 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 36,230 psi | 58% | 2431 fps | 95.5% |
| Norma URP | <<locked>> | 98% | 40,582 psi | 65% | 2559 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 86% | 38,145 psi | 61% | 2490 fps | 95.7% |
| Ramshot TAC | <<locked>> | 86% | 46,586 psi | 75% | 2575 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,101 psi | 59% | 2434 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,611 psi | 67% | 2470 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 41% | 1480 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,033 psi | 69% | 2513 fps | 99.4% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 52,083 psi | 84% | 2674 fps | 95.7% |
| ReloadSwiss RS 52 | 51.8 gr | 84% | 38,000 psi | 61% | 2530 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 29,660 psi | 48% | 2336 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 39,407 psi | 63% | 2428 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 33,881 psi | 54% | 2323 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 86% | 33,301 psi | 53% | 2372 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 52,214 psi | 84% | 2661 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,527 psi | 73% | 2569 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,418 psi | 55% | 2388 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 32,155 psi | 52% | 2306 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,600 psi | 73% | 2526 fps | 98.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,301 psi | 84% | 2320 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,979 psi | 77% | 2608 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,246 psi | 60% | 2474 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,716 psi | 73% | 2530 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 44,280 psi | 71% | 2546 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 37,333 psi | 60% | 2431 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,478 psi | 60% | 2349 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,632 psi | 49% | 2218 fps | 98.5% |
| Somchem S321 | <<locked>> | 80% | 40,915 psi | 66% | 2500 fps | 98.3% |
| Somchem S335 | <<locked>> | 80% | 36,840 psi | 59% | 2352 fps | 99.5% |
| Somchem S341 | <<locked>> | 80% | 35,752 psi | 57% | 2388 fps | 95.1% |
| Somchem S355 | <<locked>> | 86% | 34,461 psi | 55% | 2382 fps | 95.4% |
| Somchem S365 | <<locked>> | 94% | 31,792 psi | 51% | 2398 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 52,257 psi | 84% | 2510 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,554 psi | 68% | 2428 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,521 psi | 60% | 2356 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,677 psi | 52% | 2326 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 33,562 psi | 54% | 2326 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 84% | 30,763 psi | 49% | 2277 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 98% | 42,757 psi | 69% | 2562 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 38,174 psi | 61% | 2421 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 80% | 32,329 psi | 52% | 2313 fps | 97.9% |
| Vihtavuori N550 | <<locked>> | 98% | 41,727 psi | 67% | 2566 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,143 psi | 58% | 2398 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 36,927 psi | 59% | 2457 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,040 psi | 55% | 2379 fps | 95.4% |
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 97 powders for 8.5 x 55 Blaser loaded with the .338 | 200gr | Nosler Ballistic Silver Tip. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,864 fps. Accurate 4350 gives the best case fill at 100 %, and 97 of the 97 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 200.0 gr projectile in 0.338" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder- TS 15.5, Alliant Reloder-16 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 CFE223 rank at the top here: for 8.5 x 55 Blaser with the .338 | 200gr | Nosler Ballistic Silver Tip 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.