Load Specifications
Bullet Manufacturer:Nosler
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:1:6.0
Load data in caliber .375 Rem. Ultra Mag. with .375 | 260gr | Nosler Ballistic Tip bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, 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.
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>> | 82% | 54,737 psi | 86% | 2592 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,464 psi | 90% | 2657 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,390 psi | 87% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,101 psi | 88% | 2664 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,730 psi | 70% | 2579 fps | 97.6% |
| Accurate 4064 | <<locked>> | 90% | 57,522 psi | 90% | 2707 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,012 psi | 85% | 2743 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 57,522 psi | 90% | 2740 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,027 psi | 86% | 2690 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,301 psi | 82% | 2723 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,202 psi | 88% | 2690 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,638 psi | 90% | 2661 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,653 psi | 90% | 2858 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,054 psi | 82% | 2720 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,405 psi | 87% | 2713 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,811 psi | 87% | 2733 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,998 psi | 86% | 2795 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,478 psi | 89% | 2831 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,271 psi | 80% | 2713 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,308 psi | 66% | 2605 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,819 psi | 75% | 2769 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,479 psi | 90% | 2756 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 56,101 psi | 88% | 2726 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,825 psi | 87% | 2703 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,389 psi | 85% | 2625 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,941 psi | 88% | 2717 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,942 psi | 89% | 2743 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 56,768 psi | 89% | 2792 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 94% | 57,058 psi | 89% | 2756 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 84% | 54,462 psi | 85% | 2700 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,027 psi | 86% | 2723 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,128 psi | 85% | 2730 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 57,566 psi | 90% | 2831 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 56% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,637 psi | 87% | 2700 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,766 psi | 86% | 2680 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,447 psi | 85% | 2674 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,201 psi | 85% | 2654 fps | 98.3% |
| IMR 4350 | <<locked>> | 98% | 56,391 psi | 88% | 2726 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,711 psi | 90% | 2733 fps | 98.7% |
| IMR 4831 | <<locked>> | 98% | 54,650 psi | 86% | 2736 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 57,261 psi | 90% | 2762 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,202 psi | 88% | 2690 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,537 psi | 90% | 2713 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,565 psi | 89% | 2667 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,491 psi | 85% | 2671 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,188 psi | 90% | 2723 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 54,911 psi | 86% | 2710 fps | 98.6% |
| Norma 201 | <<locked>> | 86% | 56,202 psi | 88% | 2687 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,782 psi | 89% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,013 psi | 86% | 2723 fps | 100% |
| Norma 204 | <<locked>> | 98% | 57,319 psi | 90% | 2779 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 47,442 psi | 74% | 2723 fps | 97.2% |
| Norma URP | <<locked>> | 98% | 56,652 psi | 89% | 2782 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 55,709 psi | 87% | 2746 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,521 psi | 87% | 2782 fps | 99.2% |
| Ramshot TAC | <<locked>> | 84% | 56,550 psi | 89% | 2710 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,449 psi | 88% | 2726 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,985 psi | 89% | 2690 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,303 psi | 57% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,058 psi | 89% | 2723 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,449 psi | 88% | 2795 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,144 psi | 88% | 2828 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,696 psi | 90% | 2818 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,043 psi | 89% | 2848 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 56,942 psi | 89% | 2664 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,666 psi | 89% | 2684 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,970 psi | 88% | 2720 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,053 psi | 78% | 2694 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 94% | 55,825 psi | 87% | 2703 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,188 psi | 90% | 2723 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,537 psi | 90% | 2713 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,491 psi | 85% | 2671 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,911 psi | 86% | 2710 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,653 psi | 90% | 2776 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,230 psi | 87% | 2690 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,883 psi | 88% | 2710 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,421 psi | 90% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,520 psi | 85% | 2579 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,551 psi | 90% | 2680 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,559 psi | 78% | 2690 fps | 96.2% |
| Somchem S321 | <<locked>> | 82% | 57,682 psi | 90% | 2720 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,927 psi | 89% | 2621 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,665 psi | 86% | 2680 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,130 psi | 88% | 2717 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 2782 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,923 psi | 80% | 2677 fps | 97.3% |
| Vihtavuori N130 | <<locked>> | 82% | 57,014 psi | 89% | 2585 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,711 psi | 90% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,550 psi | 89% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,305 psi | 90% | 2661 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,653 psi | 90% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,405 psi | 87% | 2726 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 84% | 56,869 psi | 89% | 2690 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,506 psi | 87% | 2661 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,491 psi | 85% | 2733 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,891 psi | 73% | 2677 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,680 psi | 87% | 2703 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 57,087 psi | 89% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,014 psi | 89% | 2799 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,971 psi | 60% | 2628 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,941 psi | 88% | 2720 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% | 51,547 psi | 81% | 2549 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,280 psi | 69% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,764 psi | 81% | 2628 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,236 psi | 68% | 2461 fps | 95.1% |
| Accurate 3100 | <<locked>> | 94% | 36,274 psi | 57% | 2421 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 41,872 psi | 66% | 2484 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,951 psi | 49% | 2323 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 47,529 psi | 74% | 2592 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 40,422 psi | 63% | 2454 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 98% | 49,008 psi | 77% | 2667 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,603 psi | 78% | 2595 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,386 psi | 79% | 2575 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,511 psi | 68% | 2631 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,805 psi | 76% | 2667 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,263 psi | 63% | 2474 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,163 psi | 68% | 2536 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,256 psi | 49% | 2333 fps | 95% |
| Alliant Reloder-17 | 76.2 gr | 80% | 34,954 psi | 55% | 2454 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,124 psi | 75% | 2661 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,993 psi | 45% | 2300 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,431 psi | 52% | 2464 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,920 psi | 74% | 2598 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 40,132 psi | 63% | 2480 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 43,482 psi | 68% | 2503 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,155 psi | 80% | 2579 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,820 psi | 77% | 2618 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,828 psi | 64% | 2484 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 40,683 psi | 64% | 2530 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 88% | 47,094 psi | 74% | 2602 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 47,979 psi | 75% | 2602 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,689 psi | 45% | 2241 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,150 psi | 69% | 2579 fps | 99.9% |
| Hodgdon Superformance | 88.6 gr | 88% | 43,192 psi | 68% | 2598 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,672 psi | 42% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,035 psi | 72% | 2559 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 48,066 psi | 75% | 2592 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,453 psi | 67% | 2487 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,846 psi | 70% | 2503 fps | 96.4% |
| IMR 4350 | <<locked>> | 90% | 43,772 psi | 69% | 2526 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,380 psi | 66% | 2484 fps | 95.6% |
| IMR 4831 | <<locked>> | 82% | 32,169 psi | 50% | 2336 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 44,222 psi | 69% | 2566 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 49,603 psi | 78% | 2595 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,065 psi | 74% | 2572 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,123 psi | 74% | 2530 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 42,424 psi | 66% | 2487 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 37,202 psi | 58% | 2385 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 40,089 psi | 63% | 2464 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 46,499 psi | 73% | 2546 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,905 psi | 74% | 2549 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,525 psi | 67% | 2523 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 49,908 psi | 78% | 2667 fps | 95.8% |
| Norma MRP | <<locked>> | 96% | 41,336 psi | 65% | 2608 fps | 95.4% |
| Norma URP | <<locked>> | 82% | 33,475 psi | 52% | 2375 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 42,235 psi | 66% | 2536 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 37,275 psi | 58% | 2464 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 49,632 psi | 78% | 2608 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,342 psi | 77% | 2625 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,447 psi | 84% | 2641 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,948 psi | 42% | 1529 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,104 psi | 64% | 2467 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,934 psi | 72% | 2638 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,188 psi | 58% | 2516 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,996 psi | 52% | 2388 fps | 95.4% |
| ReloadSwiss RS 70 | 81.2 gr | 84% | 35,186 psi | 55% | 2448 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 50,633 psi | 79% | 2579 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,295 psi | 69% | 2500 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,710 psi | 59% | 2428 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 46,847 psi | 73% | 2641 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 86% | 43,482 psi | 68% | 2503 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,202 psi | 58% | 2385 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,065 psi | 74% | 2572 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,424 psi | 66% | 2487 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 40,089 psi | 63% | 2464 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,754 psi | 61% | 2477 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,095 psi | 75% | 2585 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,050 psi | 72% | 2562 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,747 psi | 75% | 2497 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,972 psi | 63% | 2372 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,539 psi | 65% | 2431 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 46,398 psi | 73% | 2635 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 53,896 psi | 84% | 2671 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,326 psi | 74% | 2493 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,732 psi | 75% | 2579 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 38,421 psi | 60% | 2431 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 28,094 psi | 44% | 2280 fps | 97.2% |
| Somchem S385 | <<locked>> | 96% | 44,541 psi | 70% | 2572 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 53,737 psi | 84% | 2543 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,167 psi | 75% | 2484 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,077 psi | 69% | 2480 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,440 psi | 70% | 2487 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,593 psi | 57% | 2372 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 32,663 psi | 51% | 2326 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 49,835 psi | 78% | 2592 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,960 psi | 67% | 2480 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,227 psi | 51% | 2329 fps | 95% |
| Vihtavuori N555 | <<locked>> | 86% | 29,356 psi | 46% | 2320 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,387 psi | 51% | 2303 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 49,850 psi | 78% | 2638 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,828 psi | 64% | 2533 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,441 psi | 43% | 2323 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,759 psi | 72% | 2569 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 102 powders for .375 Rem. Ultra Mag. loaded with the .375 | 260gr | Nosler Ballistic Tip. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,858 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,858 fps. Accurate 3100 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 (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 260.0 gr projectile in 0.375" calls for a 1:6.0 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 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .375 Rem. Ultra Mag. with the .375 | 260gr | Nosler Ballistic Tip 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.