Load Specifications
Load data in caliber .375 Blaser Mag. with .375 | 260gr | Nosler Solid 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 ReloadSwiss RS 60.
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% | 54,041 psi | 89% | 2654 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 52,373 psi | 86% | 2677 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,085 psi | 89% | 2740 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,735 psi | 85% | 2671 fps | 96.5% |
| Accurate 4064 | <<locked>> | 90% | 52,402 psi | 86% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 51,590 psi | 85% | 2799 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 52,982 psi | 87% | 2753 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 53,882 psi | 88% | 2749 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 52,098 psi | 86% | 2703 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 52,591 psi | 86% | 2680 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 52,344 psi | 86% | 2864 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 53,838 psi | 88% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,534 psi | 90% | 2795 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,214 psi | 87% | 2854 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,259 psi | 89% | 2890 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,985 psi | 62% | 2598 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,192 psi | 69% | 2749 fps | 97.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 52,533 psi | 86% | 2762 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 54,244 psi | 89% | 2785 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,607 psi | 90% | 2756 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,896 psi | 88% | 2687 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,621 psi | 90% | 2782 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 52,823 psi | 87% | 2825 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 51,793 psi | 85% | 2746 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 98% | 54,607 psi | 90% | 2848 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 94% | 52,228 psi | 86% | 2759 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 86% | 53,476 psi | 88% | 2762 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,356 psi | 81% | 2730 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 52,649 psi | 86% | 2792 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 51,793 psi | 85% | 2825 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,476 psi | 58% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,766 psi | 90% | 2766 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 53,272 psi | 87% | 2743 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,519 psi | 88% | 2736 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,606 psi | 88% | 2713 fps | 97.7% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,650 psi | 90% | 2779 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 53,113 psi | 87% | 2736 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,315 psi | 86% | 2792 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 52,330 psi | 86% | 2772 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 52,098 psi | 86% | 2703 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,576 psi | 86% | 2730 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 52,721 psi | 87% | 2680 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 53,185 psi | 87% | 2730 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 52,417 psi | 86% | 2733 fps | 98.6% |
| Lovex S070 | <<locked>> | 98% | 53,127 psi | 87% | 2762 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 51,851 psi | 85% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 86% | 52,257 psi | 86% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,708 psi | 88% | 2782 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 54,346 psi | 89% | 2838 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 54,070 psi | 89% | 2805 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,142 psi | 87% | 2831 fps | 98.5% |
| Ramshot TAC | <<locked>> | 84% | 52,170 psi | 86% | 2720 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 51,677 psi | 85% | 2740 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 52,808 psi | 87% | 2703 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,839 psi | 59% | 1716 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,984 psi | 90% | 2733 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 52,330 psi | 86% | 2730 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,752 psi | 90% | 2858 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,085 psi | 89% | 2890 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,056 psi | 90% | 2874 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,955 psi | 90% | 2904 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 84% | 52,997 psi | 87% | 2684 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 52,286 psi | 86% | 2697 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,114 psi | 89% | 2779 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,607 psi | 90% | 2756 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 52,417 psi | 86% | 2733 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,576 psi | 86% | 2730 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 53,185 psi | 87% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 53,127 psi | 87% | 2762 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 52,301 psi | 86% | 2785 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,085 psi | 89% | 2753 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,781 psi | 90% | 2772 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,403 psi | 88% | 2641 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,534 psi | 88% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,721 psi | 87% | 2684 fps | 97.5% |
| Somchem S321 | <<locked>> | 82% | 53,011 psi | 87% | 2736 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 52,750 psi | 87% | 2641 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,592 psi | 88% | 2743 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,491 psi | 89% | 2776 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,776 psi | 80% | 2789 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 53,156 psi | 87% | 2605 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,635 psi | 88% | 2628 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 51,895 psi | 85% | 2664 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 52,721 psi | 87% | 2680 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 52,504 psi | 86% | 2707 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,432 psi | 88% | 2782 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 84% | 52,475 psi | 86% | 2703 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,215 psi | 89% | 2723 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 52,576 psi | 86% | 2792 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,336 psi | 68% | 2674 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,824 psi | 88% | 2766 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 52,286 psi | 86% | 2749 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,853 psi | 90% | 2851 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,866 psi | 56% | 2592 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,520 psi | 90% | 2782 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% | 47,761 psi | 78% | 2566 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,451 psi | 66% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,268 psi | 78% | 2641 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,382 psi | 75% | 2566 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,232 psi | 63% | 2493 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,098 psi | 56% | 2470 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 44,005 psi | 72% | 2602 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 80% | 37,318 psi | 61% | 2454 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,035 psi | 76% | 2608 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 46,151 psi | 76% | 2592 fps | 100% |
| Alliant Power Pro 2000-MR | 73.2 gr | 80% | 39,769 psi | 65% | 2628 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,869 psi | 61% | 2477 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,711 psi | 65% | 2539 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,532 psi | 53% | 2431 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,792 psi | 52% | 2441 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,820 psi | 49% | 2392 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,738 psi | 60% | 2625 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,033 psi | 71% | 2605 fps | 98.3% |
| Bofors RP3 | <<locked>> | 80% | 36,463 psi | 60% | 2480 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 45,281 psi | 74% | 2602 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,718 psi | 78% | 2595 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,643 psi | 73% | 2628 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,385 psi | 81% | 2769 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 80% | 37,420 psi | 61% | 2484 fps | 96.3% |
| Hodgdon H414 | <<locked>> | 90% | 42,018 psi | 69% | 2631 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 92% | 48,892 psi | 80% | 2703 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 44,367 psi | 73% | 2612 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 27,992 psi | 46% | 2283 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,176 psi | 66% | 2582 fps | 99.3% |
| Hodgdon Superformance | 87.7 gr | 92% | 44,933 psi | 74% | 2703 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,411 psi | 43% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,467 psi | 70% | 2562 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 43,816 psi | 72% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,146 psi | 64% | 2487 fps | 98% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,454 psi | 73% | 2559 fps | 95.7% |
| IMR 4350 | <<locked>> | 94% | 45,281 psi | 74% | 2625 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,251 psi | 73% | 2585 fps | 95.6% |
| IMR 4831 | <<locked>> | 86% | 33,098 psi | 54% | 2431 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 40,683 psi | 67% | 2569 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 80% | 46,035 psi | 76% | 2608 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 42,873 psi | 70% | 2579 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,034 psi | 72% | 2539 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 39,117 psi | 64% | 2490 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 38,638 psi | 63% | 2484 fps | 95.6% |
| Lovex S070 | <<locked>> | 90% | 41,495 psi | 68% | 2562 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 43,105 psi | 71% | 2556 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 43,250 psi | 71% | 2562 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,088 psi | 64% | 2526 fps | 98.4% |
| Norma URP | <<locked>> | 86% | 34,548 psi | 57% | 2474 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 38,406 psi | 63% | 2536 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 38,537 psi | 63% | 2566 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 45,788 psi | 75% | 2612 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,368 psi | 74% | 2635 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,588 psi | 81% | 2654 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,672 psi | 44% | 1532 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,474 psi | 85% | 2684 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,321 psi | 66% | 2516 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,539 psi | 68% | 2635 fps | 98.5% |
| ReloadSwiss RS 60 | 72.1 gr | 80% | 33,823 psi | 56% | 2507 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,895 psi | 56% | 2487 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,666 psi | 60% | 2549 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 46,992 psi | 77% | 2592 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,002 psi | 67% | 2507 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 34,330 psi | 56% | 2425 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 90% | 45,281 psi | 74% | 2602 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,638 psi | 63% | 2484 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,873 psi | 70% | 2579 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,117 psi | 64% | 2490 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 41,495 psi | 68% | 2562 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,273 psi | 58% | 2474 fps | 97.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,179 psi | 73% | 2589 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,409 psi | 70% | 2569 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,411 psi | 73% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,898 psi | 61% | 2379 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,265 psi | 71% | 2533 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 49,676 psi | 82% | 2684 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,077 psi | 72% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,830 psi | 72% | 2585 fps | 99.1% |
| Somchem S355 | <<locked>> | 80% | 35,288 psi | 58% | 2434 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 25,570 psi | 42% | 2267 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 50,125 psi | 82% | 2562 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,715 psi | 73% | 2500 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,350 psi | 66% | 2490 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,959 psi | 67% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,475 psi | 55% | 2372 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 33,895 psi | 56% | 2425 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 46,035 psi | 76% | 2602 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,523 psi | 65% | 2490 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,344 psi | 55% | 2428 fps | 95% |
| Vihtavuori N555 | <<locked>> | 92% | 31,821 psi | 52% | 2461 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,747 psi | 49% | 2297 fps | 96% |
| Winchester 748 | <<locked>> | 80% | 45,672 psi | 75% | 2648 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 42,177 psi | 69% | 2635 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,878 psi | 49% | 2467 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,814 psi | 69% | 2575 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 .375 Blaser Mag. loaded with the .375 | 260gr | Nosler Solid. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,904 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,904 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 56–90 %, leaving at least 10 % headroom. The 260.0 gr projectile in 0.375" calls for a 1:6.0 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, ReloadSwiss RS 60 rank at the top here: for .375 Blaser Mag. with the .375 | 260gr | Nosler Solid 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.