Load Specifications
Load data in caliber 8.5 x 55 Blaser with .338 | 210gr | Fox Classic Hunter bullet and 95 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>> | 92% | 55,550 psi | 89% | 2575 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 52,823 psi | 85% | 2618 fps | 98.5% |
| Accurate 2230 | <<locked>> | 82% | 53,577 psi | 86% | 2631 fps | 98.9% |
| Accurate 2460 | <<locked>> | 88% | 54,056 psi | 87% | 2602 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 55,390 psi | 89% | 2628 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 55,724 psi | 89% | 2657 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,897 psi | 88% | 2664 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 53,185 psi | 85% | 2493 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,606 psi | 86% | 2513 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 54,578 psi | 88% | 2657 fps | 99.3% |
| ADI AR 2207 | <<locked>> | 82% | 54,447 psi | 87% | 2510 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 55,724 psi | 89% | 2651 fps | 99% |
| ADI AR 2219 | <<locked>> | 84% | 52,997 psi | 85% | 2598 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 54,230 psi | 87% | 2621 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 53,388 psi | 86% | 2605 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 55,550 psi | 89% | 2720 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 54,114 psi | 87% | 2756 fps | 98.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 54,288 psi | 87% | 2667 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 88% | 55,767 psi | 89% | 2585 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 55,390 psi | 89% | 2690 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,076 psi | 67% | 2523 fps | 95.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,095 psi | 77% | 2664 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 82% | 55,303 psi | 89% | 2526 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 55,361 psi | 89% | 2533 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 54,433 psi | 87% | 2671 fps | 98.6% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,650 psi | 88% | 2684 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,432 psi | 86% | 2566 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 94% | 56,188 psi | 90% | 2694 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 54,607 psi | 88% | 2736 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 88% | 55,172 psi | 88% | 2628 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 56,405 psi | 90% | 2654 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 52,895 psi | 85% | 2641 fps | 97.8% |
| Hodgdon H4198 | <<locked>> | 82% | 55,143 psi | 88% | 2536 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 54,998 psi | 88% | 2667 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,101 psi | 61% | 2415 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 53,461 psi | 86% | 2697 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,113 psi | 55% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,519 psi | 86% | 2628 fps | 99.5% |
| IMR 3031 | <<locked>> | 94% | 53,911 psi | 86% | 2657 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 55,187 psi | 88% | 2638 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 96% | 56,405 psi | 90% | 2618 fps | 96% |
| IMR 4198 | <<locked>> | 86% | 53,287 psi | 85% | 2510 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 53,432 psi | 86% | 2674 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 92% | 54,230 psi | 87% | 2621 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 82% | 54,273 psi | 87% | 2612 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 54,186 psi | 87% | 2612 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 53,330 psi | 86% | 2638 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 55,419 psi | 89% | 2595 fps | 99.4% |
| Lovex S062 | <<locked>> | 98% | 54,128 psi | 87% | 2635 fps | 99.8% |
| Norma 200 | <<locked>> | 84% | 55,506 psi | 89% | 2559 fps | 100% |
| Norma 201 | <<locked>> | 94% | 53,258 psi | 85% | 2608 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 53,766 psi | 86% | 2621 fps | 100% |
| Norma 203B | <<locked>> | 98% | 54,476 psi | 87% | 2677 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 98% | 55,245 psi | 89% | 2707 fps | 99.3% |
| Ramshot TAC | <<locked>> | 92% | 54,940 psi | 88% | 2635 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 53,780 psi | 86% | 2651 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 90% | 55,811 psi | 89% | 2625 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,360 psi | 55% | 1594 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 54,128 psi | 87% | 2612 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 54,056 psi | 87% | 2628 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 55,376 psi | 89% | 2756 fps | 99.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,488 psi | 83% | 2730 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 54,157 psi | 87% | 2595 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 53,461 psi | 86% | 2602 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,488 psi | 81% | 2618 fps | 99.3% |
| Shooters World AR Plus | <<locked>> | 82% | 54,273 psi | 87% | 2612 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 53,330 psi | 86% | 2638 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 54,128 psi | 87% | 2635 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 54,331 psi | 87% | 2585 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 53,911 psi | 86% | 2267 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 53,272 psi | 85% | 2608 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,881 psi | 85% | 2680 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,490 psi | 86% | 2562 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 56,231 psi | 90% | 2654 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,127 psi | 85% | 2631 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 55,883 psi | 90% | 2562 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 55,376 psi | 89% | 2559 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 55,564 psi | 89% | 2657 fps | 99.9% |
| Somchem S335 | <<locked>> | 94% | 54,694 psi | 88% | 2562 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 55,724 psi | 89% | 2651 fps | 99.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,532 psi | 83% | 2621 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,970 psi | 59% | 2461 fps | 97.9% |
| Vihtavuori N120 | <<locked>> | 82% | 54,360 psi | 87% | 2461 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 55,883 psi | 90% | 2539 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 55,709 psi | 89% | 2552 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 55,840 psi | 90% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 54,186 psi | 87% | 2598 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,748 psi | 80% | 2562 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,106 psi | 71% | 2516 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 92% | 54,955 psi | 88% | 2625 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 98% | 55,666 psi | 89% | 2638 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 42,830 psi | 69% | 2516 fps | 95.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,484 psi | 73% | 2510 fps | 98.4% |
| Winchester 748 | <<locked>> | 92% | 53,824 psi | 86% | 2667 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 56,434 psi | 90% | 2694 fps | 99.7% |
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% | 38,116 psi | 61% | 2323 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,617 psi | 80% | 2569 fps | 98.1% |
| Accurate 2230 | <<locked>> | 80% | 49,676 psi | 80% | 2572 fps | 98.4% |
| Accurate 2460 | <<locked>> | 80% | 41,075 psi | 66% | 2405 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 30,168 psi | 48% | 2221 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 36,419 psi | 58% | 2359 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 28,587 psi | 46% | 2201 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 80% | 47,036 psi | 75% | 2408 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,413 psi | 76% | 2425 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 35,056 psi | 56% | 2316 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 51,097 psi | 82% | 2467 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 38,537 psi | 62% | 2369 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 46,383 psi | 74% | 2507 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,101 psi | 59% | 2336 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 80% | 35,563 psi | 57% | 2346 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,699 psi | 68% | 2513 fps | 98.2% |
| Alliant Power Pro 2000-MR | 52.2 gr | 86% | 38,638 psi | 62% | 2474 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,590 psi | 52% | 2290 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,526 psi | 70% | 2418 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 37,782 psi | 61% | 2395 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 39,581 psi | 63% | 2470 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,606 psi | 55% | 2395 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 51,982 psi | 83% | 2484 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,585 psi | 73% | 2402 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 38,856 psi | 62% | 2411 fps | 95.2% |
| Bofors RP3 | <<locked>> | 84% | 31,662 psi | 51% | 2283 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,320 psi | 63% | 2339 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,650 psi | 56% | 2339 fps | 97.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 38,421 psi | 62% | 2457 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 42,235 psi | 68% | 2438 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,830 psi | 69% | 2457 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 92% | 43,192 psi | 69% | 2487 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 51,837 psi | 83% | 2490 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 35,288 psi | 57% | 2326 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,781 psi | 57% | 2369 fps | 95.8% |
| Hodgdon LEVERevolution | 47.6 gr | 80% | 31,357 psi | 50% | 2283 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,309 psi | 41% | 1391 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,055 psi | 55% | 2283 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 33,794 psi | 54% | 2333 fps | 99.8% |
| IMR 4064 | <<locked>> | 86% | 37,753 psi | 61% | 2349 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 94% | 53,055 psi | 85% | 2572 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 44,744 psi | 72% | 2392 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 33,852 psi | 54% | 2323 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 37,101 psi | 59% | 2336 fps | 97.3% |
| Lovex D073.4 | <<locked>> | 80% | 50,314 psi | 81% | 2559 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 40,988 psi | 66% | 2408 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 32,924 psi | 53% | 2293 fps | 97.9% |
| Lovex S060 | <<locked>> | 80% | 36,100 psi | 58% | 2270 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 30,647 psi | 49% | 2211 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 49,008 psi | 79% | 2474 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,214 psi | 55% | 2277 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 34,156 psi | 55% | 2293 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 34,592 psi | 55% | 2333 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 86% | 36,767 psi | 59% | 2395 fps | 95.6% |
| Ramshot TAC | <<locked>> | 86% | 45,063 psi | 72% | 2477 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,824 psi | 57% | 2343 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,147 psi | 64% | 2375 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,425 psi | 41% | 1424 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,785 psi | 67% | 2421 fps | 99.3% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 50,546 psi | 81% | 2575 fps | 95.6% |
| ReloadSwiss RS 52 | 49.4 gr | 84% | 36,535 psi | 59% | 2428 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 30,327 psi | 49% | 2297 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 37,666 psi | 60% | 2329 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 80% | 32,401 psi | 52% | 2228 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 86% | 31,763 psi | 51% | 2277 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 50,314 psi | 81% | 2559 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,924 psi | 53% | 2293 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 30,647 psi | 49% | 2211 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,034 psi | 71% | 2431 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,256 psi | 82% | 2234 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,644 psi | 75% | 2513 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 35,853 psi | 57% | 2379 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,367 psi | 71% | 2434 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 42,772 psi | 69% | 2451 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,853 psi | 57% | 2333 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,158 psi | 58% | 2257 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,414 psi | 47% | 2129 fps | 98.4% |
| Somchem S321 | <<locked>> | 80% | 39,378 psi | 63% | 2402 fps | 98.2% |
| Somchem S335 | <<locked>> | 80% | 35,505 psi | 57% | 2260 fps | 99.4% |
| Somchem S341 | <<locked>> | 82% | 36,970 psi | 59% | 2349 fps | 95.8% |
| Somchem S355 | <<locked>> | 86% | 32,996 psi | 53% | 2287 fps | 95.2% |
| Somchem S365 | <<locked>> | 94% | 30,501 psi | 49% | 2306 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 51,068 psi | 82% | 2421 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,205 psi | 66% | 2336 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,245 psi | 58% | 2264 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,227 psi | 50% | 2234 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 32,358 psi | 52% | 2238 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 84% | 29,356 psi | 47% | 2185 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 98% | 41,191 psi | 66% | 2464 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 36,898 psi | 59% | 2329 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 80% | 31,038 psi | 50% | 2221 fps | 97.8% |
| Vihtavuori N550 | <<locked>> | 98% | 40,016 psi | 64% | 2464 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 34,867 psi | 56% | 2306 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 35,563 psi | 57% | 2362 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,547 psi | 52% | 2280 fps | 95.1% |
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 95 powders for 8.5 x 55 Blaser loaded with the .338 | 210gr | Fox Classic Hunter. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,756 fps. Accurate 4064 gives the best case fill at 100 %, and 95 of the 95 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 210.0 gr projectile in 0.338" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 | 210gr | Fox Classic Hunter 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.