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 Ruger load data
Case Length (l3):2.572"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:99 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:23"
Max. allowed Pressure:62,076 psi
Recommended Twist Rate:1:16.0
Load data in caliber .375 Ruger with .375 | 260gr | SUS-TAC HP bullet and 99 powders. The key underlying parameters are shown in the table above.
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: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 54,375 psi | 88% | 2497 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 52,866 psi | 85% | 2520 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,535 psi | 89% | 2552 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,491 psi | 88% | 2572 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,144 psi | 90% | 2539 fps | 95.7% |
| Accurate 4064 | <<locked>> | 96% | 55,085 psi | 89% | 2589 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,210 psi | 76% | 2546 fps | 97.9% |
| Accurate LT-30 | <<locked>> | 82% | 54,041 psi | 87% | 2448 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,433 psi | 88% | 2470 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,359 psi | 86% | 2575 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 96% | 54,404 psi | 88% | 2572 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 82% | 54,708 psi | 88% | 2556 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,028 psi | 90% | 2582 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 56,144 psi | 90% | 2566 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,157 psi | 87% | 2631 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 52,620 psi | 85% | 2671 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 53,679 psi | 86% | 2592 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,259 psi | 87% | 2503 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,578 psi | 88% | 2612 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,847 psi | 75% | 2552 fps | 97.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,186 psi | 87% | 2694 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,084 psi | 86% | 2444 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 53,084 psi | 86% | 2585 fps | 98.8% |
| Bofors RP3 | <<locked>> | 96% | 54,027 psi | 87% | 2602 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 54,781 psi | 88% | 2562 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,969 psi | 89% | 2526 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,187 psi | 89% | 2612 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 53,142 psi | 86% | 2644 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 84% | 53,229 psi | 86% | 2539 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,302 psi | 87% | 2562 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,593 psi | 90% | 2615 fps | 98.6% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 50,705 psi | 82% | 2592 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 90% | 53,809 psi | 87% | 2585 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,946 psi | 69% | 2448 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 52,460 psi | 85% | 2612 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,795 psi | 56% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,376 psi | 89% | 2592 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 53,171 psi | 86% | 2579 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 53,766 psi | 87% | 2556 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,650 psi | 88% | 2536 fps | 96.4% |
| IMR 4198 | <<locked>> | 84% | 54,578 psi | 88% | 2467 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,708 psi | 87% | 2552 fps | 96.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,020 psi | 73% | 2493 fps | 97.5% |
| IMR 4895 | <<locked>> | 94% | 55,912 psi | 90% | 2641 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 90% | 56,028 psi | 90% | 2582 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 52,721 psi | 85% | 2526 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 52,605 psi | 85% | 2559 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,592 psi | 86% | 2513 fps | 99.5% |
| Lovex S062 | <<locked>> | 94% | 53,345 psi | 86% | 2556 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,402 psi | 84% | 2543 fps | 97.4% |
| Norma 201 | <<locked>> | 92% | 55,463 psi | 89% | 2572 fps | 100% |
| Norma 202 | <<locked>> | 92% | 55,999 psi | 90% | 2579 fps | 100% |
| Norma 203B | <<locked>> | 94% | 53,722 psi | 87% | 2602 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 47,079 psi | 76% | 2543 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 94% | 54,041 psi | 87% | 2621 fps | 99.5% |
| Ramshot TAC | <<locked>> | 88% | 53,156 psi | 86% | 2546 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,985 psi | 90% | 2615 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,085 psi | 87% | 2539 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,143 psi | 57% | 1594 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,825 psi | 90% | 2569 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 52,794 psi | 85% | 2549 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,418 psi | 88% | 2667 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,201 psi | 87% | 2700 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,862 psi | 75% | 2562 fps | 97.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,022 psi | 77% | 2582 fps | 97% |
| Rottweil R 901 | <<locked>> | 88% | 53,301 psi | 86% | 2520 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,927 psi | 90% | 2572 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 53,621 psi | 86% | 2592 fps | 99.8% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 54,781 psi | 88% | 2562 fps | 95.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,402 psi | 84% | 2543 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 52,605 psi | 85% | 2559 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,345 psi | 86% | 2556 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,695 psi | 90% | 2543 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,114 psi | 89% | 2566 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,738 psi | 90% | 2651 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,114 psi | 89% | 2523 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,882 psi | 88% | 2572 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,201 psi | 89% | 2595 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,288 psi | 87% | 2484 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 53,911 psi | 87% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 52,982 psi | 85% | 2500 fps | 96% |
| Somchem S321 | <<locked>> | 86% | 53,853 psi | 87% | 2569 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 53,403 psi | 86% | 2484 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,302 psi | 87% | 2569 fps | 99.5% |
| Somchem S355 | <<locked>> | 98% | 54,447 psi | 88% | 2595 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,916 psi | 68% | 2493 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 86% | 54,099 psi | 87% | 2457 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,230 psi | 87% | 2470 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,027 psi | 89% | 2539 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 53,142 psi | 86% | 2516 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,028 psi | 90% | 2575 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,617 psi | 80% | 2539 fps | 98% |
| Vihtavuori N530 | <<locked>> | 88% | 53,301 psi | 86% | 2539 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 54,679 psi | 88% | 2556 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,675 psi | 78% | 2546 fps | 97.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,807 psi | 82% | 2530 fps | 99.6% |
| Winchester 748 | <<locked>> | 90% | 55,999 psi | 90% | 2625 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 50,952 psi | 82% | 2595 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,984 psi | 89% | 2605 fps | 99.8% |
Start Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 42,496 psi | 68% | 2336 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,224 psi | 74% | 2428 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,070 psi | 56% | 2257 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,466 psi | 67% | 2385 fps | 99.7% |
| Accurate 2700 | <<locked>> | 92% | 52,663 psi | 85% | 2493 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 33,141 psi | 53% | 2241 fps | 99.1% |
| Accurate 4350 | <<locked>> | 94% | 38,261 psi | 62% | 2395 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 50,894 psi | 82% | 2408 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,285 psi | 83% | 2428 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,943 psi | 63% | 2339 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 35,302 psi | 57% | 2251 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 51,140 psi | 82% | 2513 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,930 psi | 66% | 2352 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 80% | 40,132 psi | 65% | 2356 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,398 psi | 76% | 2533 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 37,652 psi | 61% | 2398 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,343 psi | 52% | 2221 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,964 psi | 77% | 2425 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,809 psi | 56% | 2274 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 39,059 psi | 63% | 2408 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 86% | 34,127 psi | 55% | 2326 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,748 psi | 80% | 2402 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,826 psi | 61% | 2333 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 31,647 psi | 51% | 2218 fps | 95.9% |
| Bofors RP7 | <<locked>> | 98% | 51,590 psi | 83% | 2520 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,163 psi | 70% | 2352 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,204 psi | 63% | 2365 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,047 psi | 69% | 2484 fps | 97.6% |
| Hodgdon H322 | <<locked>> | 80% | 46,789 psi | 75% | 2451 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,558 psi | 77% | 2470 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 40,074 psi | 65% | 2369 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 98% | 47,485 psi | 76% | 2543 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 39,204 psi | 63% | 2349 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,460 psi | 54% | 2260 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,230 psi | 57% | 2316 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,802 psi | 42% | 1391 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,884 psi | 61% | 2310 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 38,363 psi | 62% | 2359 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,809 psi | 56% | 2234 fps | 95.2% |
| IMR 4166 Enduron | <<locked>> | 90% | 51,300 psi | 83% | 2490 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 48,602 psi | 78% | 2392 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 50,430 psi | 81% | 2503 fps | 95.4% |
| IMR 4831 | <<locked>> | 94% | 36,985 psi | 60% | 2352 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 35,621 psi | 57% | 2303 fps | 96.2% |
| IMR 8208 XBR | <<locked>> | 80% | 40,930 psi | 66% | 2352 fps | 98.6% |
| Lovex D073.5 | <<locked>> | 80% | 45,890 psi | 74% | 2428 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 37,362 psi | 60% | 2320 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 39,566 psi | 64% | 2290 fps | 97.2% |
| Lovex S062 | <<locked>> | 80% | 34,476 psi | 56% | 2241 fps | 97.2% |
| Lovex S065 | <<locked>> | 94% | 43,685 psi | 70% | 2408 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 38,319 psi | 62% | 2303 fps | 98.1% |
| Norma 202 | <<locked>> | 80% | 38,305 psi | 62% | 2316 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 34,214 psi | 55% | 2264 fps | 95.6% |
| Norma URP | <<locked>> | 94% | 38,798 psi | 63% | 2395 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 33,736 psi | 54% | 2270 fps | 95.1% |
| Ramshot TAC | <<locked>> | 82% | 43,787 psi | 71% | 2398 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,045 psi | 65% | 2369 fps | 97.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,396 psi | 72% | 2395 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,049 psi | 42% | 1427 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,006 psi | 74% | 2431 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 46,325 psi | 75% | 2448 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,027 psi | 58% | 2359 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,805 psi | 48% | 2228 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,319 psi | 62% | 2408 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 42,061 psi | 68% | 2474 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 42,047 psi | 68% | 2352 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 36,347 psi | 59% | 2257 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 31,821 psi | 51% | 2218 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 98% | 51,590 psi | 83% | 2520 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 43,685 psi | 70% | 2408 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,362 psi | 60% | 2320 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 34,476 psi | 56% | 2241 fps | 97.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,675 psi | 78% | 2448 fps | 99.4% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,488 psi | 83% | 2520 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,215 psi | 57% | 2306 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,617 psi | 78% | 2438 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 41,626 psi | 67% | 2369 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,579 psi | 61% | 2310 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,798 psi | 64% | 2274 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,721 psi | 53% | 2152 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 49,516 psi | 80% | 2454 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 43,961 psi | 71% | 2425 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 39,436 psi | 64% | 2277 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,508 psi | 62% | 2320 fps | 96.8% |
| Somchem S355 | <<locked>> | 82% | 32,909 psi | 53% | 2228 fps | 95.7% |
| Somchem S365 | <<locked>> | 88% | 28,660 psi | 46% | 2198 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 45,092 psi | 73% | 2339 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,929 psi | 64% | 2274 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,288 psi | 57% | 2254 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,187 psi | 58% | 2257 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 29,269 psi | 47% | 2126 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 92% | 38,334 psi | 62% | 2349 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 40,973 psi | 66% | 2349 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 34,795 psi | 56% | 2244 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 40,016 psi | 64% | 2402 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,039 psi | 52% | 2188 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 39,943 psi | 64% | 2385 fps | 99.1% |
| Winchester 760 | <<locked>> | 98% | 47,688 psi | 77% | 2543 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,782 psi | 59% | 2313 fps | 97.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 99 powders for .375 Ruger loaded with the .375 | 260gr | SUS-TAC HP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,700 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,700 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 (428 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 4350, Alliant Reloder-16, Alliant Reloder-17 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.