Load Specifications
Load data in caliber .375 Blaser Mag. with .375 | 260gr | Nosler AccuBond bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Power Pro 2000-MR.
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% | 52,156 psi | 86% | 2615 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,882 psi | 88% | 2687 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,650 psi | 88% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,025 psi | 85% | 2700 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,243 psi | 87% | 2677 fps | 96.5% |
| Accurate 4064 | <<locked>> | 92% | 53,490 psi | 88% | 2726 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,794 psi | 87% | 2802 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 54,389 psi | 89% | 2759 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 52,112 psi | 86% | 2707 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,650 psi | 88% | 2713 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 53,882 psi | 88% | 2687 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,722 psi | 88% | 2871 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,027 psi | 90% | 2776 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,027 psi | 90% | 2661 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 52,446 psi | 86% | 2749 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,155 psi | 84% | 2802 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 51,996 psi | 85% | 2841 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,434 psi | 60% | 2546 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,277 psi | 66% | 2690 fps | 96.9% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,186 psi | 89% | 2772 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 52,185 psi | 86% | 2743 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 52,663 psi | 86% | 2710 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 52,344 psi | 86% | 2651 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,562 psi | 86% | 2740 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,505 psi | 89% | 2835 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 54,201 psi | 89% | 2703 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,287 psi | 87% | 2753 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 98% | 52,272 psi | 86% | 2795 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 96% | 53,432 psi | 88% | 2759 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 88% | 54,882 psi | 90% | 2766 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,355 psi | 78% | 2687 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,969 psi | 89% | 2799 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,214 psi | 87% | 2828 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 58% | 1657 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,895 psi | 87% | 2720 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 54,737 psi | 90% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,897 psi | 90% | 2740 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,793 psi | 85% | 2667 fps | 97.1% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,562 psi | 86% | 2730 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,578 psi | 90% | 2740 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,966 psi | 82% | 2740 fps | 99.2% |
| IMR 4895 | <<locked>> | 90% | 53,766 psi | 88% | 2779 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 53,650 psi | 88% | 2713 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,664 psi | 88% | 2697 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,824 psi | 88% | 2733 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,215 psi | 89% | 2687 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 54,665 psi | 90% | 2736 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,577 psi | 88% | 2733 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,476 psi | 89% | 2769 fps | 97.9% |
| Norma 201 | <<locked>> | 88% | 53,156 psi | 87% | 2703 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,606 psi | 88% | 2707 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,853 psi | 90% | 2785 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 52,112 psi | 86% | 2789 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 90% | 51,779 psi | 85% | 2759 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,053 psi | 84% | 2782 fps | 98% |
| Ramshot TAC | <<locked>> | 86% | 53,780 psi | 88% | 2726 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,171 psi | 87% | 2746 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,563 psi | 90% | 2713 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,621 psi | 58% | 1696 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,113 psi | 87% | 2694 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,708 psi | 88% | 2736 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,446 psi | 86% | 2808 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 51,924 psi | 85% | 2844 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,214 psi | 86% | 2822 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,678 psi | 86% | 2848 fps | 99% |
| Rottweil R 901 | <<locked>> | 86% | 54,317 psi | 89% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,650 psi | 88% | 2703 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 51,851 psi | 85% | 2733 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 52,663 psi | 86% | 2710 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,577 psi | 88% | 2733 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,824 psi | 88% | 2733 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,665 psi | 90% | 2736 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,476 psi | 89% | 2769 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,534 psi | 88% | 2792 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,214 psi | 86% | 2707 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,837 psi | 87% | 2730 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,085 psi | 90% | 2648 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,940 psi | 90% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,230 psi | 89% | 2690 fps | 97.5% |
| Somchem S321 | <<locked>> | 84% | 54,752 psi | 90% | 2746 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,128 psi | 89% | 2644 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 51,706 psi | 85% | 2700 fps | 99.8% |
| Somchem S355 | <<locked>> | 94% | 52,475 psi | 86% | 2733 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,427 psi | 76% | 2740 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,723 psi | 90% | 2612 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 51,895 psi | 85% | 2592 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,098 psi | 87% | 2667 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,201 psi | 89% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,867 psi | 88% | 2713 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,737 psi | 90% | 2785 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 53,940 psi | 89% | 2710 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 52,286 psi | 86% | 2684 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,751 psi | 88% | 2792 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,117 psi | 64% | 2618 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 51,822 psi | 85% | 2720 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 53,664 psi | 88% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,489 psi | 86% | 2799 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,503 psi | 53% | 2530 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 52,547 psi | 86% | 2740 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% | 46,050 psi | 76% | 2530 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,299 psi | 83% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,783 psi | 64% | 2457 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,411 psi | 75% | 2598 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,876 psi | 77% | 2572 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 36,651 psi | 60% | 2451 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 34,751 psi | 57% | 2477 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 42,366 psi | 70% | 2556 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,129 psi | 59% | 2415 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,440 psi | 73% | 2566 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 44,222 psi | 73% | 2552 fps | 100% |
| Alliant Power Pro 2000-MR | 70.5 gr | 80% | 38,261 psi | 63% | 2579 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,476 psi | 58% | 2434 fps | 98.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,909 psi | 85% | 2618 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,174 psi | 63% | 2493 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 33,330 psi | 55% | 2438 fps | 95% |
| Alliant Reloder-17 | 69.4 gr | 80% | 30,545 psi | 50% | 2392 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,313 psi | 50% | 2388 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,507 psi | 62% | 2628 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,350 psi | 68% | 2556 fps | 97.7% |
| Bofors RP3 | <<locked>> | 80% | 34,954 psi | 57% | 2434 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 46,456 psi | 76% | 2605 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,311 psi | 76% | 2556 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,960 psi | 71% | 2585 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,311 psi | 78% | 2723 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 80% | 50,691 psi | 83% | 2654 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,868 psi | 59% | 2434 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 42,931 psi | 70% | 2635 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 94% | 50,125 psi | 82% | 2707 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 42,728 psi | 70% | 2569 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,558 psi | 47% | 2287 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,667 psi | 63% | 2539 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 46,122 psi | 76% | 2707 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,208 psi | 43% | 1480 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,060 psi | 67% | 2523 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 42,221 psi | 69% | 2566 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,913 psi | 62% | 2448 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 42,960 psi | 71% | 2513 fps | 95% |
| IMR 4350 | <<locked>> | 96% | 46,369 psi | 76% | 2631 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,527 psi | 75% | 2592 fps | 95.6% |
| IMR 4831 | <<locked>> | 88% | 33,750 psi | 55% | 2434 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 39,059 psi | 64% | 2523 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 44,440 psi | 73% | 2566 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 50,067 psi | 82% | 2644 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,205 psi | 68% | 2536 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,685 psi | 70% | 2497 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 37,710 psi | 62% | 2451 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 39,552 psi | 65% | 2487 fps | 95.6% |
| Lovex S070 | <<locked>> | 92% | 42,409 psi | 70% | 2562 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 41,611 psi | 68% | 2513 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 41,713 psi | 68% | 2523 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,536 psi | 62% | 2484 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 35,302 psi | 58% | 2477 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 36,912 psi | 61% | 2493 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 39,334 psi | 65% | 2569 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 44,338 psi | 73% | 2569 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,598 psi | 72% | 2589 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,008 psi | 79% | 2615 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,455 psi | 43% | 1512 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,777 psi | 82% | 2644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,481 psi | 68% | 2526 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,769 psi | 65% | 2589 fps | 97.9% |
| ReloadSwiss RS 60 | 69.4 gr | 80% | 32,532 psi | 53% | 2461 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,693 psi | 57% | 2493 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,536 psi | 62% | 2552 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 45,513 psi | 75% | 2552 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,508 psi | 65% | 2467 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 32,924 psi | 54% | 2382 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 46,456 psi | 76% | 2605 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,552 psi | 65% | 2487 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,205 psi | 68% | 2536 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,710 psi | 62% | 2451 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 42,409 psi | 70% | 2562 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,939 psi | 56% | 2431 fps | 96.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,409 psi | 70% | 2539 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,930 psi | 67% | 2530 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,018 psi | 71% | 2470 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,607 psi | 58% | 2343 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,396 psi | 73% | 2536 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 47,819 psi | 79% | 2641 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 42,641 psi | 70% | 2474 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,090 psi | 69% | 2539 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 33,924 psi | 56% | 2392 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 26,136 psi | 43% | 2274 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 48,617 psi | 80% | 2526 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,250 psi | 71% | 2464 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,827 psi | 64% | 2451 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,537 psi | 65% | 2461 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,169 psi | 53% | 2329 fps | 98.1% |
| Vihtavuori N160 | <<locked>> | 86% | 34,722 psi | 57% | 2431 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 44,396 psi | 73% | 2562 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,942 psi | 62% | 2448 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 33,997 psi | 56% | 2431 fps | 95% |
| Vihtavuori N555 | <<locked>> | 94% | 32,329 psi | 53% | 2464 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,631 psi | 47% | 2254 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 43,830 psi | 72% | 2605 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 43,091 psi | 71% | 2635 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,414 psi | 50% | 2464 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,190 psi | 66% | 2530 fps | 98.9% |
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 99 powders for .375 Blaser Mag. loaded with the .375 | 260gr | Nosler AccuBond. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,871 fps; across all powders the maximum-charge window runs from 1,657 fps to 2,871 fps. Accurate 4350 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 53–90 %, 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. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .375 Blaser Mag. with the .375 | 260gr | Nosler AccuBond 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.