Load Specifications
Bullet:.375 | 270gr | Barnes TSX FB
Bullet Manufacturer:Barnes
Bullet Weight:270 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:.375 Blaser Mag. load data
Case Length (l3):2.814"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:107.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:60,916 psi
Recommended Twist Rate:1:16.0
Load data in caliber .375 Blaser Mag. with .375 | 270gr | Barnes TSX FB bullet and 102 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, Alliant Reloder-17 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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 86% | 54,636 psi | 90% | 2595 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 52,794 psi | 87% | 2621 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 52,069 psi | 85% | 2612 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,781 psi | 90% | 2684 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,576 psi | 86% | 2615 fps | 96.7% |
| Accurate 4064 | <<locked>> | 92% | 52,098 psi | 86% | 2657 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,619 psi | 85% | 2733 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 53,650 psi | 88% | 2694 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 54,636 psi | 90% | 2690 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 52,939 psi | 87% | 2648 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 53,214 psi | 87% | 2621 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,447 psi | 89% | 2746 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,200 psi | 87% | 2808 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,215 psi | 89% | 2710 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,273 psi | 89% | 2598 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,940 psi | 90% | 2733 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,430 psi | 83% | 2740 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,998 psi | 90% | 2831 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,433 psi | 58% | 2480 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,334 psi | 65% | 2625 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,388 psi | 88% | 2710 fps | 99.6% |
| Bofors RP3 | <<locked>> | 94% | 54,679 psi | 90% | 2726 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 51,706 psi | 85% | 2644 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,781 psi | 90% | 2631 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 51,706 psi | 85% | 2674 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,766 psi | 88% | 2769 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 53,577 psi | 88% | 2641 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,462 psi | 89% | 2667 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 52,460 psi | 86% | 2690 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 98% | 51,648 psi | 85% | 2733 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 96% | 52,750 psi | 87% | 2697 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 54,172 psi | 89% | 2703 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,528 psi | 76% | 2625 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,345 psi | 88% | 2736 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 52,446 psi | 86% | 2766 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,099 psi | 58% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,272 psi | 86% | 2661 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 53,911 psi | 89% | 2684 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,273 psi | 89% | 2677 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,462 psi | 89% | 2657 fps | 97.8% |
| IMR 4198 | <<locked>> | 82% | 54,694 psi | 90% | 2559 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,909 psi | 85% | 2671 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,853 psi | 88% | 2677 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,095 psi | 81% | 2677 fps | 99.3% |
| IMR 4895 | <<locked>> | 90% | 52,852 psi | 87% | 2713 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 52,939 psi | 87% | 2648 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 52,663 psi | 86% | 2631 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 52,968 psi | 87% | 2671 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,708 psi | 88% | 2628 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 53,679 psi | 88% | 2671 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 52,852 psi | 87% | 2671 fps | 98.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,417 psi | 88% | 2700 fps | 97.9% |
| Norma 201 | <<locked>> | 88% | 52,373 psi | 86% | 2641 fps | 100% |
| Norma 202 | <<locked>> | 88% | 52,794 psi | 87% | 2641 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,027 psi | 89% | 2720 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 51,126 psi | 84% | 2723 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 92% | 54,723 psi | 90% | 2749 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,096 psi | 82% | 2717 fps | 98.1% |
| Ramshot TAC | <<locked>> | 86% | 53,113 psi | 87% | 2664 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,446 psi | 86% | 2680 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,737 psi | 88% | 2651 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,433 psi | 58% | 1654 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,286 psi | 86% | 2628 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,881 psi | 87% | 2671 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 51,663 psi | 85% | 2743 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,897 psi | 90% | 2831 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,387 psi | 84% | 2756 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,895 psi | 85% | 2782 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 53,171 psi | 87% | 2621 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 52,721 psi | 87% | 2638 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 54,317 psi | 89% | 2713 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 51,706 psi | 85% | 2644 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 52,852 psi | 87% | 2671 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 88% | 52,968 psi | 87% | 2671 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,679 psi | 88% | 2671 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,417 psi | 88% | 2700 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,823 psi | 87% | 2730 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,955 psi | 90% | 2694 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,069 psi | 85% | 2667 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,215 psi | 89% | 2585 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,143 psi | 89% | 2582 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 53,359 psi | 88% | 2628 fps | 97.6% |
| Somchem S321 | <<locked>> | 84% | 53,838 psi | 88% | 2680 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,490 psi | 88% | 2585 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,505 psi | 89% | 2687 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 54,926 psi | 90% | 2717 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,643 psi | 75% | 2677 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,172 psi | 89% | 2549 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,375 psi | 89% | 2569 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 52,359 psi | 86% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,316 psi | 88% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 52,924 psi | 87% | 2648 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,867 psi | 88% | 2720 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 53,243 psi | 87% | 2648 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 54,998 psi | 90% | 2667 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,881 psi | 87% | 2730 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,116 psi | 63% | 2552 fps | 97.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,752 psi | 90% | 2707 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 52,837 psi | 87% | 2694 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 51,648 psi | 85% | 2733 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,473 psi | 52% | 2461 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 51,822 psi | 85% | 2677 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% | 45,150 psi | 74% | 2467 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,371 psi | 81% | 2572 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,246 psi | 61% | 2388 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,338 psi | 73% | 2533 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,021 psi | 76% | 2513 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 35,288 psi | 58% | 2382 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 33,736 psi | 55% | 2411 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 41,539 psi | 68% | 2493 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 80% | 35,346 psi | 58% | 2352 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,656 psi | 72% | 2503 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 43,482 psi | 71% | 2490 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,995 psi | 84% | 2694 fps | 100% |
| Alliant Power Pro 2000-MR | 68.9 gr | 80% | 37,507 psi | 62% | 2516 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,708 psi | 57% | 2372 fps | 98.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,097 psi | 84% | 2556 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,289 psi | 61% | 2431 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,634 psi | 54% | 2375 fps | 95.1% |
| Alliant Reloder-17 | 67.9 gr | 80% | 29,834 psi | 49% | 2333 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,472 psi | 48% | 2329 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,535 psi | 60% | 2559 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,756 psi | 67% | 2500 fps | 97.9% |
| Bofors RP3 | <<locked>> | 80% | 33,895 psi | 56% | 2372 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 45,759 psi | 75% | 2546 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,513 psi | 75% | 2493 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,047 psi | 69% | 2520 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,601 psi | 77% | 2657 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 50,169 psi | 82% | 2595 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,981 psi | 84% | 2618 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 34,969 psi | 57% | 2372 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 92% | 42,221 psi | 69% | 2572 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 94% | 49,559 psi | 81% | 2648 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 41,872 psi | 69% | 2503 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 27,746 psi | 46% | 2228 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,797 psi | 62% | 2477 fps | 99% |
| Hodgdon Superformance | <<locked>> | 94% | 45,339 psi | 74% | 2648 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 43% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,321 psi | 66% | 2461 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 41,278 psi | 68% | 2500 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,043 psi | 61% | 2385 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 42,322 psi | 69% | 2454 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 51,474 psi | 85% | 2516 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 45,759 psi | 75% | 2572 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 44,759 psi | 73% | 2530 fps | 95.7% |
| IMR 4831 | <<locked>> | 88% | 32,837 psi | 54% | 2372 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 38,174 psi | 63% | 2461 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 43,656 psi | 72% | 2503 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 49,023 psi | 80% | 2579 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,248 psi | 66% | 2474 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,061 psi | 69% | 2438 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 36,840 psi | 60% | 2388 fps | 99% |
| Lovex S065 | <<locked>> | 88% | 38,769 psi | 64% | 2428 fps | 95.7% |
| Lovex S070 | <<locked>> | 92% | 41,452 psi | 68% | 2500 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,582 psi | 67% | 2448 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 40,973 psi | 67% | 2461 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,666 psi | 60% | 2421 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 34,476 psi | 57% | 2415 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 36,114 psi | 59% | 2431 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 38,653 psi | 63% | 2510 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 43,569 psi | 72% | 2510 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,960 psi | 71% | 2530 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,239 psi | 78% | 2552 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,194 psi | 43% | 1476 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,081 psi | 81% | 2582 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,698 psi | 67% | 2464 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,870 psi | 64% | 2526 fps | 98% |
| ReloadSwiss RS 60 | 67.9 gr | 80% | 31,807 psi | 52% | 2398 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 33,765 psi | 55% | 2428 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 36,854 psi | 61% | 2493 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 44,353 psi | 73% | 2490 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,566 psi | 63% | 2402 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 31,865 psi | 52% | 2316 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 45,759 psi | 75% | 2546 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,769 psi | 64% | 2428 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,248 psi | 66% | 2474 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 36,840 psi | 60% | 2388 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 41,452 psi | 68% | 2500 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,054 psi | 54% | 2365 fps | 96.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,495 psi | 68% | 2477 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,059 psi | 66% | 2464 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,235 psi | 69% | 2408 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,896 psi | 57% | 2283 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,569 psi | 72% | 2477 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 47,152 psi | 77% | 2582 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 41,684 psi | 68% | 2408 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,481 psi | 68% | 2480 fps | 98.8% |
| Somchem S355 | <<locked>> | 80% | 32,924 psi | 54% | 2326 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 25,266 psi | 41% | 2211 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 47,892 psi | 79% | 2467 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,554 psi | 70% | 2405 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,913 psi | 62% | 2388 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,696 psi | 64% | 2398 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,256 psi | 51% | 2267 fps | 98.1% |
| Vihtavuori N160 | <<locked>> | 86% | 33,924 psi | 56% | 2369 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 43,627 psi | 72% | 2500 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 37,115 psi | 61% | 2388 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 33,170 psi | 54% | 2369 fps | 95% |
| Vihtavuori N555 | <<locked>> | 94% | 31,343 psi | 51% | 2398 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,934 psi | 46% | 2198 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 43,149 psi | 71% | 2543 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 42,380 psi | 70% | 2575 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,588 psi | 49% | 2402 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,349 psi | 65% | 2467 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 102 powders for .375 Blaser Mag. loaded with the .375 | 270gr | Barnes TSX FB. Alliant Reloder-17 delivers the highest muzzle velocity at 2,831 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,831 fps. Accurate 4350 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.375" calls for a 1:16.0 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 Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .375 Blaser Mag. with the .375 | 270gr | Barnes TSX FB 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.