Load Specifications
Load data in caliber .338 Blaser Mag. with .338 | 206gr | Peregrine VLR-5 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, Hodgdon Superformance and Alliant Reloder-17.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 53,476 psi | 88% | 2710 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,100 psi | 90% | 2779 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 53,809 psi | 88% | 2802 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,940 psi | 90% | 2785 fps | 97.3% |
| Accurate 4064 | <<locked>> | 92% | 55,071 psi | 90% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 51,372 psi | 84% | 2861 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 52,750 psi | 87% | 2815 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 53,882 psi | 88% | 2815 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 51,967 psi | 85% | 2769 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 52,489 psi | 86% | 2743 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 52,214 psi | 86% | 2930 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 53,693 psi | 88% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,201 psi | 89% | 2858 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,272 psi | 87% | 2923 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,505 psi | 89% | 2963 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,652 psi | 62% | 2654 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,003 psi | 69% | 2812 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 52,605 psi | 86% | 2831 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 54,041 psi | 89% | 2851 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,447 psi | 89% | 2822 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,592 psi | 88% | 2749 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,520 psi | 90% | 2848 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 52,881 psi | 87% | 2890 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 51,576 psi | 85% | 2808 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 98% | 54,795 psi | 90% | 2917 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 52,214 psi | 86% | 2825 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 86% | 53,243 psi | 87% | 2825 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,342 psi | 81% | 2795 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 52,547 psi | 86% | 2858 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 51,692 psi | 85% | 2894 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,215 psi | 58% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,752 psi | 90% | 2831 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 53,098 psi | 87% | 2805 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,330 psi | 88% | 2799 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,461 psi | 88% | 2779 fps | 97.8% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,737 psi | 90% | 2848 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 53,084 psi | 87% | 2802 fps | 97.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,199 psi | 86% | 2854 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 52,257 psi | 86% | 2838 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 51,967 psi | 85% | 2769 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,127 psi | 86% | 2789 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 52,518 psi | 86% | 2743 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 52,866 psi | 87% | 2792 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 52,069 psi | 85% | 2792 fps | 98.7% |
| Lovex S070 | <<locked>> | 98% | 52,866 psi | 87% | 2828 fps | 98% |
| Norma 201 | <<locked>> | 88% | 54,795 psi | 90% | 2808 fps | 100% |
| Norma 202 | <<locked>> | 86% | 52,011 psi | 85% | 2762 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,374 psi | 88% | 2844 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 54,433 psi | 89% | 2907 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 90% | 54,085 psi | 89% | 2871 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,185 psi | 87% | 2900 fps | 98.7% |
| Ramshot TAC | <<locked>> | 84% | 51,996 psi | 85% | 2782 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 51,488 psi | 85% | 2802 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 52,605 psi | 86% | 2766 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,694 psi | 59% | 1759 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,781 psi | 90% | 2795 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 51,996 psi | 85% | 2792 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,578 psi | 90% | 2923 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,056 psi | 89% | 2956 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,897 psi | 90% | 2940 fps | 99.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,998 psi | 90% | 2972 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 52,243 psi | 86% | 2740 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 51,967 psi | 85% | 2759 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 53,911 psi | 89% | 2841 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,447 psi | 89% | 2822 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 52,069 psi | 85% | 2792 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,127 psi | 86% | 2789 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 52,866 psi | 87% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 52,866 psi | 87% | 2828 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 52,214 psi | 86% | 2851 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,969 psi | 89% | 2815 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,549 psi | 90% | 2838 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,084 psi | 87% | 2700 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,200 psi | 87% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,446 psi | 86% | 2746 fps | 97.7% |
| Somchem S321 | <<locked>> | 82% | 52,721 psi | 87% | 2795 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 52,518 psi | 86% | 2700 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,650 psi | 88% | 2808 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 54,230 psi | 89% | 2838 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,718 psi | 80% | 2854 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 52,968 psi | 87% | 2664 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,374 psi | 88% | 2687 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,071 psi | 90% | 2769 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 52,634 psi | 86% | 2743 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 52,431 psi | 86% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,432 psi | 88% | 2848 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 52,156 psi | 86% | 2766 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,041 psi | 89% | 2785 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 52,489 psi | 86% | 2854 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,901 psi | 67% | 2726 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,882 psi | 88% | 2828 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 51,996 psi | 85% | 2812 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,795 psi | 90% | 2917 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,504 psi | 55% | 2648 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,404 psi | 89% | 2844 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 47,094 psi | 77% | 2621 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,392 psi | 65% | 2543 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,760 psi | 77% | 2697 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,092 psi | 74% | 2625 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 37,275 psi | 61% | 2536 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,533 psi | 55% | 2520 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 43,569 psi | 72% | 2657 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 80% | 37,057 psi | 61% | 2510 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,716 psi | 75% | 2667 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 45,876 psi | 75% | 2651 fps | 100% |
| Alliant Power Pro 2000-MR | 61.7 gr | 80% | 39,421 psi | 65% | 2687 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,419 psi | 60% | 2530 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,276 psi | 64% | 2595 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,169 psi | 53% | 2484 fps | 95.1% |
| Alliant Reloder-17 | 60.8 gr | 80% | 31,386 psi | 52% | 2493 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,269 psi | 48% | 2434 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,390 psi | 60% | 2680 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,815 psi | 70% | 2664 fps | 98.4% |
| Bofors RP3 | <<locked>> | 80% | 35,897 psi | 59% | 2530 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 44,991 psi | 74% | 2664 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,471 psi | 78% | 2654 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,251 psi | 73% | 2687 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,168 psi | 81% | 2831 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 80% | 36,811 psi | 60% | 2533 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 90% | 41,742 psi | 69% | 2687 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 92% | 48,878 psi | 80% | 2769 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 43,990 psi | 72% | 2671 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 27,499 psi | 45% | 2329 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,016 psi | 66% | 2641 fps | 99.4% |
| Hodgdon Superformance | 73.9 gr | 92% | 44,715 psi | 73% | 2766 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,107 psi | 43% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,279 psi | 69% | 2621 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 43,526 psi | 71% | 2661 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,899 psi | 64% | 2543 fps | 98.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,321 psi | 68% | 2562 fps | 95% |
| IMR 4350 | <<locked>> | 94% | 45,092 psi | 74% | 2687 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 41,466 psi | 68% | 2595 fps | 95% |
| IMR 4831 | <<locked>> | 86% | 32,648 psi | 54% | 2480 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 40,248 psi | 66% | 2625 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 80% | 45,716 psi | 75% | 2667 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 42,380 psi | 70% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,743 psi | 72% | 2595 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 38,609 psi | 63% | 2546 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 38,232 psi | 63% | 2539 fps | 95.7% |
| Lovex S070 | <<locked>> | 90% | 41,046 psi | 67% | 2615 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 42,453 psi | 70% | 2608 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 42,830 psi | 70% | 2618 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,624 psi | 63% | 2582 fps | 98.5% |
| Norma URP | <<locked>> | 86% | 34,113 psi | 56% | 2526 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 38,072 psi | 63% | 2592 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 38,145 psi | 63% | 2618 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 45,556 psi | 75% | 2674 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,962 psi | 74% | 2690 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,371 psi | 81% | 2717 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,440 psi | 43% | 1572 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,242 psi | 84% | 2746 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 39,972 psi | 66% | 2575 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,321 psi | 68% | 2697 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,460 psi | 55% | 2562 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,504 psi | 55% | 2539 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,260 psi | 60% | 2605 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 46,340 psi | 76% | 2648 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,408 psi | 66% | 2562 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 33,634 psi | 55% | 2470 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 44,991 psi | 74% | 2664 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,232 psi | 63% | 2539 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,380 psi | 70% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,609 psi | 63% | 2546 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 41,046 psi | 67% | 2615 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,940 psi | 57% | 2530 fps | 97.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,714 psi | 72% | 2644 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,134 psi | 69% | 2628 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,976 psi | 72% | 2562 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,477 psi | 60% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,047 psi | 71% | 2589 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 49,371 psi | 81% | 2746 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,540 psi | 71% | 2562 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,598 psi | 72% | 2644 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 34,664 psi | 57% | 2484 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 25,019 psi | 41% | 2310 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 49,777 psi | 82% | 2621 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,367 psi | 73% | 2556 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,842 psi | 65% | 2543 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,524 psi | 67% | 2552 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,909 psi | 54% | 2418 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 33,518 psi | 55% | 2474 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 45,745 psi | 75% | 2661 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 38,986 psi | 64% | 2543 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 32,851 psi | 54% | 2474 fps | 95% |
| Vihtavuori N555 | <<locked>> | 92% | 31,386 psi | 52% | 2513 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,312 psi | 48% | 2346 fps | 96% |
| Winchester 748 | <<locked>> | 80% | 45,368 psi | 74% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 41,930 psi | 69% | 2694 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,356 psi | 48% | 2513 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,466 psi | 68% | 2631 fps | 99.3% |
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 95 powders for .338 Blaser Mag. loaded with the .338 | 206gr | Peregrine VLR-5. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,972 fps; across all powders the maximum-charge window runs from 1,719 fps to 2,972 fps. Alliant Reloder-16 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 (420 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. Alliant Reloder-16, Alliant Reloder-23, Alliant Reloder-26 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .338 Blaser Mag. 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.