Load Specifications
Bullet:.375 | 260gr | SUS-TAC HP
Bullet Manufacturer:SUS-TAC
Bullet Weight:260 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:.375 Rem. Ultra Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:117 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:16.0
Load data in caliber .375 Rem. Ultra Mag. with .375 | 260gr | SUS-TAC HP bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Hodgdon H414.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 57,725 psi | 90% | 2625 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,811 psi | 89% | 2648 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,810 psi | 86% | 2667 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,622 psi | 87% | 2654 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,961 psi | 69% | 2566 fps | 97.3% |
| Accurate 4064 | <<locked>> | 90% | 56,942 psi | 89% | 2697 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 57,145 psi | 90% | 2782 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 56,956 psi | 89% | 2730 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,534 psi | 85% | 2680 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,779 psi | 81% | 2710 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,811 psi | 87% | 2680 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,956 psi | 89% | 2651 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,913 psi | 89% | 2844 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 51,285 psi | 80% | 2707 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,650 psi | 86% | 2700 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,274 psi | 87% | 2723 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,375 psi | 85% | 2785 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,825 psi | 87% | 2818 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,589 psi | 79% | 2697 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,756 psi | 65% | 2595 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,123 psi | 74% | 2753 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,840 psi | 89% | 2743 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 55,376 psi | 87% | 2717 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,361 psi | 87% | 2690 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,261 psi | 90% | 2661 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,434 psi | 87% | 2707 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,508 psi | 90% | 2805 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,231 psi | 88% | 2730 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 96% | 56,115 psi | 88% | 2782 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 94% | 56,608 psi | 89% | 2746 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 86% | 57,609 psi | 90% | 2740 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,331 psi | 85% | 2713 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,363 psi | 90% | 2769 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,811 psi | 89% | 2818 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,737 psi | 56% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,129 psi | 86% | 2690 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,056 psi | 85% | 2671 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,479 psi | 90% | 2713 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,188 psi | 90% | 2694 fps | 98.6% |
| IMR 4350 | <<locked>> | 98% | 55,811 psi | 87% | 2717 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,087 psi | 89% | 2720 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 57,682 psi | 90% | 2776 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 56,710 psi | 89% | 2753 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,811 psi | 87% | 2680 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,985 psi | 89% | 2703 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,231 psi | 88% | 2657 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,450 psi | 90% | 2707 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,724 psi | 89% | 2713 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 54,259 psi | 85% | 2697 fps | 98.5% |
| Norma 201 | <<locked>> | 86% | 55,622 psi | 87% | 2677 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,188 psi | 88% | 2674 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,491 psi | 85% | 2710 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,536 psi | 89% | 2762 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 46,731 psi | 73% | 2710 fps | 96.9% |
| Norma URP | <<locked>> | 98% | 55,970 psi | 88% | 2772 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 55,056 psi | 86% | 2733 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 54,708 psi | 86% | 2766 fps | 99.1% |
| Ramshot TAC | <<locked>> | 84% | 56,115 psi | 88% | 2700 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,767 psi | 87% | 2713 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,507 psi | 89% | 2680 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,274 psi | 57% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,463 psi | 88% | 2713 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,840 psi | 88% | 2785 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,448 psi | 87% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,043 psi | 89% | 2805 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,260 psi | 88% | 2835 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 56,536 psi | 89% | 2657 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,101 psi | 88% | 2674 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,434 psi | 87% | 2710 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,472 psi | 78% | 2684 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 55,361 psi | 87% | 2690 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,724 psi | 89% | 2713 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,985 psi | 89% | 2703 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,450 psi | 90% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,259 psi | 85% | 2697 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,203 psi | 90% | 2766 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,694 psi | 86% | 2680 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,361 psi | 87% | 2700 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,000 psi | 89% | 2615 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,450 psi | 90% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,971 psi | 89% | 2667 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 48,994 psi | 77% | 2677 fps | 96% |
| Somchem S321 | <<locked>> | 82% | 57,159 psi | 90% | 2710 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,405 psi | 88% | 2612 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,201 psi | 85% | 2667 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,608 psi | 87% | 2707 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,244 psi | 85% | 2772 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,169 psi | 79% | 2661 fps | 97.1% |
| Vihtavuori N130 | <<locked>> | 82% | 56,608 psi | 89% | 2575 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,290 psi | 90% | 2598 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,086 psi | 88% | 2638 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,768 psi | 89% | 2651 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,000 psi | 89% | 2684 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,723 psi | 86% | 2713 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 84% | 56,289 psi | 88% | 2680 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,984 psi | 86% | 2651 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 57,638 psi | 90% | 2772 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,238 psi | 72% | 2664 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,998 psi | 86% | 2694 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,521 psi | 89% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,376 psi | 88% | 2785 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,536 psi | 59% | 2612 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,405 psi | 87% | 2707 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 50,908 psi | 80% | 2539 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,801 psi | 69% | 2477 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,169 psi | 80% | 2618 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,730 psi | 72% | 2503 fps | 95.7% |
| Accurate 3100 | <<locked>> | 96% | 38,276 psi | 60% | 2461 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 41,437 psi | 65% | 2474 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,837 psi | 51% | 2365 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 47,137 psi | 74% | 2585 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,059 psi | 63% | 2444 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 98% | 48,472 psi | 76% | 2654 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,182 psi | 77% | 2585 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,893 psi | 78% | 2566 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,149 psi | 68% | 2621 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,124 psi | 75% | 2654 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,856 psi | 62% | 2464 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,815 psi | 67% | 2526 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,895 psi | 52% | 2375 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,563 psi | 54% | 2441 fps | 98.1% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,442 psi | 74% | 2644 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,689 psi | 45% | 2290 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,476 psi | 56% | 2513 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,427 psi | 73% | 2589 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 39,769 psi | 62% | 2470 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 43,004 psi | 67% | 2490 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,763 psi | 80% | 2572 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,443 psi | 76% | 2612 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,708 psi | 84% | 2753 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 40,350 psi | 63% | 2470 fps | 97.4% |
| Hodgdon H414 | 79.3 gr | 86% | 40,219 psi | 63% | 2516 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 88% | 46,659 psi | 73% | 2589 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 47,587 psi | 75% | 2592 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,384 psi | 44% | 2231 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,772 psi | 69% | 2569 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 42,699 psi | 67% | 2585 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,556 psi | 42% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,498 psi | 71% | 2546 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 47,587 psi | 75% | 2585 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,090 psi | 66% | 2474 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,527 psi | 70% | 2493 fps | 96.2% |
| IMR 4350 | <<locked>> | 90% | 43,366 psi | 68% | 2516 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,090 psi | 66% | 2474 fps | 95.5% |
| IMR 4831 | <<locked>> | 82% | 31,836 psi | 50% | 2326 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 43,845 psi | 69% | 2552 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 49,182 psi | 77% | 2585 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,659 psi | 73% | 2562 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,775 psi | 73% | 2520 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 42,032 psi | 66% | 2477 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 36,869 psi | 58% | 2375 fps | 95.5% |
| Lovex S070 | <<locked>> | 86% | 39,653 psi | 62% | 2451 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 46,079 psi | 72% | 2536 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,514 psi | 73% | 2539 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,177 psi | 66% | 2516 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 49,356 psi | 77% | 2654 fps | 95.5% |
| Norma MRP | <<locked>> | 96% | 40,872 psi | 64% | 2595 fps | 95.1% |
| Norma URP | <<locked>> | 82% | 33,127 psi | 52% | 2369 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 41,930 psi | 66% | 2530 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 36,898 psi | 58% | 2454 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 49,153 psi | 77% | 2595 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,834 psi | 77% | 2615 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,953 psi | 83% | 2631 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,977 psi | 42% | 1526 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,770 psi | 64% | 2457 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,339 psi | 71% | 2625 fps | 99.3% |
| ReloadSwiss RS 60 | 75.4 gr | 80% | 36,753 psi | 58% | 2503 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,576 psi | 51% | 2379 fps | 95.1% |
| ReloadSwiss RS 70 | 80.4 gr | 84% | 34,824 psi | 55% | 2434 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 50,198 psi | 79% | 2569 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,903 psi | 69% | 2490 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,362 psi | 59% | 2418 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 46,253 psi | 72% | 2628 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 86% | 43,004 psi | 67% | 2490 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,869 psi | 58% | 2375 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,659 psi | 73% | 2562 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,032 psi | 66% | 2477 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 39,653 psi | 62% | 2451 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,261 psi | 60% | 2464 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,601 psi | 75% | 2575 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,571 psi | 71% | 2552 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,326 psi | 74% | 2487 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,581 psi | 62% | 2362 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,133 psi | 64% | 2421 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 45,818 psi | 72% | 2621 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 53,359 psi | 84% | 2661 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,963 psi | 74% | 2487 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,239 psi | 74% | 2569 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 38,029 psi | 60% | 2421 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 27,804 psi | 44% | 2270 fps | 97% |
| Somchem S385 | <<locked>> | 96% | 43,976 psi | 69% | 2559 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 53,287 psi | 84% | 2536 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,747 psi | 75% | 2477 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,627 psi | 68% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,077 psi | 69% | 2477 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,216 psi | 57% | 2362 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 32,329 psi | 51% | 2316 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 49,443 psi | 77% | 2585 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,467 psi | 67% | 2470 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,069 psi | 53% | 2369 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 88% | 30,937 psi | 48% | 2359 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,039 psi | 50% | 2293 fps | 97.4% |
| Winchester 748 | <<locked>> | 80% | 49,284 psi | 77% | 2628 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,364 psi | 63% | 2520 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,093 psi | 42% | 2306 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,252 psi | 71% | 2559 fps | 99.8% |
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 103 powders for .375 Rem. Ultra Mag. loaded with the .375 | 260gr | SUS-TAC HP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,844 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 260.0 gr projectile in 0.375" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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. ReloadSwiss RS 60, ReloadSwiss RS 70, Hodgdon H414 rank at the top here: for .375 Rem. Ultra Mag. with the .375 | 260gr | SUS-TAC HP 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.