Load Specifications
Load data in caliber 8.5 x 55 Blaser with .338 | 206gr | Peregrine VLR-5 bullet and 94 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% | 55,956 psi | 90% | 2615 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,098 psi | 85% | 2657 fps | 98.5% |
| Accurate 2230 | <<locked>> | 82% | 53,693 psi | 86% | 2667 fps | 98.9% |
| Accurate 2460 | <<locked>> | 88% | 54,288 psi | 87% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 55,593 psi | 89% | 2664 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 55,898 psi | 90% | 2694 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 55,317 psi | 89% | 2703 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 53,214 psi | 85% | 2526 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,635 psi | 86% | 2546 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 55,100 psi | 88% | 2700 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 82% | 54,650 psi | 88% | 2546 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 55,840 psi | 90% | 2687 fps | 99% |
| ADI AR 2219 | <<locked>> | 84% | 53,185 psi | 85% | 2638 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 54,534 psi | 87% | 2661 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 53,548 psi | 86% | 2641 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 56,043 psi | 90% | 2762 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 54,679 psi | 88% | 2802 fps | 98.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 54,694 psi | 88% | 2707 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 88% | 56,086 psi | 90% | 2625 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 55,869 psi | 90% | 2733 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,148 psi | 68% | 2556 fps | 95.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,573 psi | 78% | 2707 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 82% | 55,376 psi | 89% | 2562 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 55,608 psi | 89% | 2569 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 54,737 psi | 88% | 2710 fps | 98.6% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,969 psi | 88% | 2723 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,490 psi | 86% | 2602 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 52,895 psi | 85% | 2687 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 90% | 54,998 psi | 88% | 2776 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 88% | 55,303 psi | 89% | 2664 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 52,736 psi | 85% | 2641 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 53,258 psi | 85% | 2680 fps | 97.8% |
| Hodgdon H4198 | <<locked>> | 82% | 55,259 psi | 89% | 2572 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 55,521 psi | 89% | 2710 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,203 psi | 61% | 2448 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 53,824 psi | 86% | 2736 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,142 psi | 55% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,737 psi | 86% | 2667 fps | 99.5% |
| IMR 3031 | <<locked>> | 94% | 54,273 psi | 87% | 2697 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 55,390 psi | 89% | 2674 fps | 99.1% |
| IMR 4198 | <<locked>> | 86% | 53,432 psi | 86% | 2546 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 53,563 psi | 86% | 2710 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 92% | 54,534 psi | 87% | 2661 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 82% | 54,389 psi | 87% | 2648 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 54,418 psi | 87% | 2648 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 53,505 psi | 86% | 2677 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 55,709 psi | 89% | 2635 fps | 99.4% |
| Lovex S062 | <<locked>> | 98% | 54,360 psi | 87% | 2671 fps | 99.8% |
| Norma 200 | <<locked>> | 84% | 55,825 psi | 90% | 2598 fps | 100% |
| Norma 201 | <<locked>> | 94% | 53,563 psi | 86% | 2648 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 53,983 psi | 87% | 2657 fps | 100% |
| Norma 203B | <<locked>> | 98% | 54,868 psi | 88% | 2720 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 98% | 55,492 psi | 89% | 2743 fps | 99.3% |
| Ramshot TAC | <<locked>> | 92% | 55,317 psi | 89% | 2671 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 54,172 psi | 87% | 2690 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 90% | 56,231 psi | 90% | 2664 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,374 psi | 55% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 54,462 psi | 87% | 2651 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 54,317 psi | 87% | 2664 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 55,506 psi | 89% | 2792 fps | 99.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,982 psi | 83% | 2772 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 54,317 psi | 87% | 2635 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 53,737 psi | 86% | 2641 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,865 psi | 82% | 2657 fps | 99.3% |
| Shooters World AR Plus | <<locked>> | 82% | 54,389 psi | 87% | 2648 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 53,505 psi | 86% | 2677 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 54,360 psi | 87% | 2671 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 54,650 psi | 88% | 2621 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,070 psi | 87% | 2300 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 53,635 psi | 86% | 2648 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,171 psi | 85% | 2720 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,838 psi | 86% | 2602 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 52,866 psi | 85% | 2644 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,272 psi | 85% | 2671 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 56,289 psi | 90% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 55,608 psi | 89% | 2595 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 55,724 psi | 89% | 2697 fps | 99.9% |
| Somchem S335 | <<locked>> | 94% | 54,955 psi | 88% | 2602 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 56,043 psi | 90% | 2690 fps | 99.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,967 psi | 83% | 2661 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,028 psi | 59% | 2493 fps | 97.8% |
| Vihtavuori N120 | <<locked>> | 82% | 54,520 psi | 87% | 2497 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 56,072 psi | 90% | 2575 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 56,086 psi | 90% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 56,159 psi | 90% | 2657 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 54,433 psi | 87% | 2635 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,169 psi | 80% | 2602 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,164 psi | 71% | 2549 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 92% | 55,216 psi | 89% | 2661 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 98% | 56,028 psi | 90% | 2677 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 43,062 psi | 69% | 2552 fps | 95.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,832 psi | 73% | 2546 fps | 98.4% |
| Winchester 748 | <<locked>> | 92% | 53,983 psi | 87% | 2703 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 52,823 psi | 85% | 2677 fps | 99.4% |
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% | 38,261 psi | 61% | 2356 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,617 psi | 80% | 2602 fps | 98% |
| Accurate 2230 | <<locked>> | 80% | 50,125 psi | 80% | 2615 fps | 98.4% |
| Accurate 2460 | <<locked>> | 80% | 41,307 psi | 66% | 2441 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 30,284 psi | 49% | 2254 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 36,622 psi | 59% | 2392 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 28,689 psi | 46% | 2231 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 80% | 47,152 psi | 76% | 2441 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,529 psi | 76% | 2457 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 35,143 psi | 56% | 2349 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 51,343 psi | 82% | 2503 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 38,696 psi | 62% | 2405 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 46,383 psi | 74% | 2539 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,173 psi | 60% | 2365 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 80% | 35,679 psi | 57% | 2379 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,786 psi | 69% | 2546 fps | 98.1% |
| Alliant Power Pro 2000-MR | 53.3 gr | 86% | 38,885 psi | 62% | 2510 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,590 psi | 52% | 2316 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,714 psi | 70% | 2454 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 37,942 psi | 61% | 2428 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 98% | 39,740 psi | 64% | 2507 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,737 psi | 56% | 2428 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,141 psi | 84% | 2520 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,977 psi | 74% | 2438 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 39,102 psi | 63% | 2448 fps | 95.2% |
| Bofors RP3 | <<locked>> | 84% | 31,836 psi | 51% | 2313 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,407 psi | 63% | 2372 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,809 psi | 56% | 2372 fps | 97.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 38,537 psi | 62% | 2490 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 42,540 psi | 68% | 2477 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,018 psi | 69% | 2493 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 43,656 psi | 70% | 2526 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 51,967 psi | 83% | 2526 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 35,331 psi | 57% | 2359 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,940 psi | 58% | 2402 fps | 95.8% |
| Hodgdon LEVERevolution | 49.8 gr | 82% | 33,692 psi | 54% | 2369 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,280 psi | 41% | 1414 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,301 psi | 55% | 2320 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 33,924 psi | 54% | 2365 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 37,942 psi | 61% | 2385 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 44,788 psi | 72% | 2425 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 34,055 psi | 55% | 2356 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 37,173 psi | 60% | 2365 fps | 97.3% |
| Lovex D073.4 | <<locked>> | 80% | 50,807 psi | 81% | 2598 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 41,133 psi | 66% | 2444 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 32,967 psi | 53% | 2323 fps | 97.9% |
| Lovex S060 | <<locked>> | 80% | 36,361 psi | 58% | 2306 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 30,908 psi | 50% | 2244 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 49,124 psi | 79% | 2510 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,301 psi | 55% | 2310 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 34,447 psi | 55% | 2329 fps | 98.8% |
| Norma 203B | <<locked>> | 84% | 34,780 psi | 56% | 2365 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 86% | 36,999 psi | 59% | 2428 fps | 95.6% |
| Ramshot TAC | <<locked>> | 86% | 45,281 psi | 73% | 2513 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,969 psi | 58% | 2375 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,524 psi | 65% | 2415 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,382 psi | 41% | 1447 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,829 psi | 67% | 2454 fps | 99.3% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 50,879 psi | 82% | 2615 fps | 95.6% |
| ReloadSwiss RS 52 | 50.4 gr | 84% | 36,637 psi | 59% | 2464 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 30,429 psi | 49% | 2326 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 37,826 psi | 61% | 2362 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 80% | 32,532 psi | 52% | 2260 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 86% | 31,952 psi | 51% | 2310 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 50,807 psi | 81% | 2598 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,967 psi | 53% | 2323 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 30,908 psi | 50% | 2244 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,208 psi | 71% | 2467 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,459 psi | 83% | 2270 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,833 psi | 75% | 2549 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 35,882 psi | 58% | 2411 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,570 psi | 71% | 2470 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 42,757 psi | 69% | 2480 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 36,013 psi | 58% | 2365 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,289 psi | 58% | 2290 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,544 psi | 47% | 2162 fps | 98.3% |
| Somchem S321 | <<locked>> | 80% | 39,755 psi | 64% | 2441 fps | 98.2% |
| Somchem S335 | <<locked>> | 80% | 35,621 psi | 57% | 2293 fps | 99.4% |
| Somchem S341 | <<locked>> | 82% | 37,072 psi | 59% | 2382 fps | 95.8% |
| Somchem S355 | <<locked>> | 86% | 33,170 psi | 53% | 2320 fps | 95.2% |
| Somchem S365 | <<locked>> | 94% | 30,661 psi | 49% | 2336 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 51,271 psi | 82% | 2457 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,336 psi | 66% | 2369 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,376 psi | 58% | 2297 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,372 psi | 50% | 2267 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 32,445 psi | 52% | 2270 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 84% | 29,544 psi | 47% | 2218 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 98% | 41,510 psi | 67% | 2503 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 36,927 psi | 59% | 2362 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 80% | 31,082 psi | 50% | 2251 fps | 97.7% |
| Vihtavuori N550 | <<locked>> | 98% | 40,306 psi | 65% | 2500 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 35,070 psi | 56% | 2339 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 35,766 psi | 57% | 2395 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,706 psi | 52% | 2313 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 94 powders for 8.5 x 55 Blaser loaded with the .338 | 206gr | Peregrine VLR-5. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,802 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,802 fps. Accurate 4064 gives the best case fill at 100 %, and 94 of the 94 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 206.0 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 | 206gr | Peregrine VLR-5 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.