Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:270 gr
Bullet Diameter:0.376"
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:1:15.0
Load data in caliber .375 Ruger with .376 | 270gr | Peregrine Plainsmaster (VLR-4) bullet and 101 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, ReloadSwiss RS 52 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: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 53,374 psi | 86% | 2434 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 55,347 psi | 89% | 2500 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 53,867 psi | 87% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 53,127 psi | 86% | 2507 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 55,230 psi | 89% | 2480 fps | 95.8% |
| Accurate 4064 | <<locked>> | 96% | 53,621 psi | 86% | 2523 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 45,832 psi | 74% | 2480 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 82% | 53,258 psi | 86% | 2388 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 53,708 psi | 87% | 2411 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 55,912 psi | 90% | 2562 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 53,403 psi | 86% | 2510 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 82% | 53,751 psi | 87% | 2493 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,100 psi | 89% | 2520 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 54,969 psi | 89% | 2500 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 53,098 psi | 86% | 2566 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,448 psi | 89% | 2661 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 52,547 psi | 85% | 2526 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 53,185 psi | 86% | 2441 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 53,432 psi | 86% | 2546 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,035 psi | 74% | 2493 fps | 98% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,345 psi | 86% | 2631 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 55,825 psi | 90% | 2428 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 55,782 psi | 90% | 2572 fps | 99.3% |
| Bofors RP3 | <<locked>> | 96% | 52,794 psi | 85% | 2539 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 53,824 psi | 87% | 2503 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 53,911 psi | 87% | 2464 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,070 psi | 87% | 2549 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 55,985 psi | 90% | 2635 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 86% | 55,999 psi | 90% | 2523 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 53,548 psi | 86% | 2503 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,563 psi | 88% | 2552 fps | 98.7% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 49,777 psi | 80% | 2533 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 90% | 52,779 psi | 85% | 2523 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,003 psi | 68% | 2388 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,114 psi | 89% | 2595 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,432 psi | 55% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,534 psi | 88% | 2530 fps | 99.8% |
| IMR 3031 | <<locked>> | 92% | 55,811 psi | 90% | 2559 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 52,866 psi | 85% | 2497 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 92% | 53,635 psi | 86% | 2477 fps | 96.4% |
| IMR 4198 | <<locked>> | 84% | 53,882 psi | 87% | 2408 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 52,866 psi | 85% | 2493 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,005 psi | 71% | 2434 fps | 97.5% |
| IMR 4895 | <<locked>> | 94% | 54,810 psi | 88% | 2575 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 90% | 55,100 psi | 89% | 2520 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 55,288 psi | 89% | 2510 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 54,911 psi | 88% | 2539 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,144 psi | 90% | 2500 fps | 99.8% |
| Lovex S062 | <<locked>> | 96% | 55,622 psi | 90% | 2536 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,343 psi | 83% | 2480 fps | 97.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,718 psi | 78% | 2461 fps | 95.8% |
| Norma 201 | <<locked>> | 92% | 54,244 psi | 87% | 2510 fps | 100% |
| Norma 202 | <<locked>> | 92% | 54,926 psi | 88% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,159 psi | 90% | 2582 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 46,122 psi | 74% | 2480 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 94% | 52,982 psi | 85% | 2559 fps | 99.5% |
| Ramshot TAC | <<locked>> | 90% | 55,854 psi | 90% | 2536 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,027 psi | 89% | 2552 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 52,953 psi | 85% | 2477 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,751 psi | 56% | 1552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 54,984 psi | 89% | 2510 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,158 psi | 89% | 2533 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 53,301 psi | 86% | 2605 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 53,330 psi | 86% | 2638 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,847 psi | 74% | 2500 fps | 97.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,021 psi | 76% | 2520 fps | 97% |
| Rottweil R 901 | <<locked>> | 90% | 55,187 psi | 89% | 2497 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 54,723 psi | 88% | 2507 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 52,388 psi | 84% | 2526 fps | 99.8% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 53,824 psi | 87% | 2503 fps | 95.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,343 psi | 83% | 2480 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 92% | 54,911 psi | 88% | 2539 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 55,622 psi | 90% | 2536 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,718 psi | 78% | 2461 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 54,926 psi | 88% | 2484 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 53,998 psi | 87% | 2503 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 54,737 psi | 88% | 2589 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,215 psi | 87% | 2461 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 53,795 psi | 87% | 2513 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,201 psi | 87% | 2533 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 53,287 psi | 86% | 2421 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 52,997 psi | 85% | 2418 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 51,866 psi | 84% | 2441 fps | 96.1% |
| Somchem S321 | <<locked>> | 86% | 52,895 psi | 85% | 2507 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 55,535 psi | 89% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 53,359 psi | 86% | 2507 fps | 99.5% |
| Somchem S355 | <<locked>> | 98% | 53,330 psi | 86% | 2530 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,002 psi | 66% | 2434 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 86% | 53,200 psi | 86% | 2398 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 53,316 psi | 86% | 2411 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 53,853 psi | 87% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,506 psi | 89% | 2497 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,085 psi | 89% | 2516 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,573 psi | 78% | 2480 fps | 98.1% |
| Vihtavuori N530 | <<locked>> | 90% | 55,985 psi | 90% | 2523 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 53,606 psi | 86% | 2493 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,601 psi | 77% | 2484 fps | 97.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,835 psi | 80% | 2470 fps | 99.6% |
| Winchester 748 | <<locked>> | 90% | 55,216 psi | 89% | 2562 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 49,995 psi | 81% | 2536 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,027 psi | 87% | 2543 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 41,452 psi | 67% | 2277 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,889 psi | 72% | 2362 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,431 psi | 54% | 2188 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,234 psi | 65% | 2323 fps | 99.7% |
| Accurate 2700 | <<locked>> | 92% | 51,663 psi | 83% | 2431 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 31,633 psi | 51% | 2175 fps | 99% |
| Accurate 4350 | <<locked>> | 94% | 36,956 psi | 60% | 2329 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 50,053 psi | 81% | 2349 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,444 psi | 81% | 2369 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,116 psi | 61% | 2283 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 34,606 psi | 56% | 2195 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 50,154 psi | 81% | 2448 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,219 psi | 65% | 2297 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 39,218 psi | 63% | 2297 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,615 psi | 75% | 2474 fps | 99.3% |
| Alliant Power Pro 2000-MR | 62.8 gr | 82% | 36,666 psi | 59% | 2336 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,328 psi | 50% | 2162 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,963 psi | 76% | 2362 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,982 psi | 55% | 2218 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,203 psi | 62% | 2346 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 86% | 33,141 psi | 53% | 2267 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,023 psi | 79% | 2346 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,970 psi | 60% | 2277 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 30,487 psi | 49% | 2156 fps | 95.8% |
| Bofors RP7 | <<locked>> | 98% | 50,546 psi | 81% | 2457 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,235 psi | 68% | 2293 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,159 psi | 61% | 2306 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,003 psi | 68% | 2421 fps | 97.6% |
| Hodgdon H322 | <<locked>> | 80% | 45,919 psi | 74% | 2392 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,630 psi | 75% | 2408 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 38,899 psi | 63% | 2306 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 98% | 46,485 psi | 75% | 2480 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 38,421 psi | 62% | 2293 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,474 psi | 52% | 2201 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,229 psi | 55% | 2254 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,556 psi | 41% | 1355 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,028 psi | 60% | 2254 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 37,260 psi | 60% | 2297 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,997 psi | 55% | 2178 fps | 95.2% |
| IMR 4166 Enduron | <<locked>> | 88% | 47,268 psi | 76% | 2382 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 47,790 psi | 77% | 2333 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 49,559 psi | 80% | 2444 fps | 95.5% |
| IMR 4831 | <<locked>> | 94% | 35,969 psi | 58% | 2290 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 34,795 psi | 56% | 2244 fps | 96.2% |
| IMR 8208 XBR | <<locked>> | 80% | 40,219 psi | 65% | 2297 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 44,672 psi | 72% | 2365 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 36,260 psi | 58% | 2260 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 38,856 psi | 63% | 2234 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 33,518 psi | 54% | 2182 fps | 97.2% |
| Lovex S065 | <<locked>> | 94% | 42,656 psi | 69% | 2346 fps | 95.5% |
| Lovex S070 | <<locked>> | 98% | 45,542 psi | 73% | 2411 fps | 95% |
| Norma 201 | <<locked>> | 80% | 37,115 psi | 60% | 2241 fps | 98.1% |
| Norma 202 | <<locked>> | 80% | 37,289 psi | 60% | 2257 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 33,373 psi | 54% | 2208 fps | 95.6% |
| Norma URP | <<locked>> | 94% | 37,884 psi | 61% | 2336 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 32,822 psi | 53% | 2211 fps | 95% |
| Ramshot TAC | <<locked>> | 82% | 42,815 psi | 69% | 2339 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,117 psi | 63% | 2310 fps | 97.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,453 psi | 70% | 2336 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,773 psi | 42% | 1391 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,179 psi | 73% | 2375 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 45,440 psi | 73% | 2392 fps | 95.4% |
| ReloadSwiss RS 52 | 59.4 gr | 80% | 34,940 psi | 56% | 2293 fps | 95.5% |
| ReloadSwiss RS 60 | 60.4 gr | 80% | 28,993 psi | 47% | 2172 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 37,275 psi | 60% | 2349 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 41,089 psi | 66% | 2411 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 40,785 psi | 66% | 2287 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 35,302 psi | 57% | 2198 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 30,719 psi | 49% | 2156 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 98% | 50,546 psi | 81% | 2457 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 42,656 psi | 69% | 2346 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,260 psi | 58% | 2260 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 33,518 psi | 54% | 2182 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 98% | 45,542 psi | 73% | 2411 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 47,776 psi | 77% | 2385 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,589 psi | 81% | 2461 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,345 psi | 55% | 2251 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,790 psi | 77% | 2379 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 40,640 psi | 65% | 2310 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,579 psi | 59% | 2251 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,899 psi | 63% | 2215 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,879 psi | 51% | 2096 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 48,472 psi | 78% | 2395 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 42,975 psi | 69% | 2362 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 38,377 psi | 62% | 2218 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 37,623 psi | 61% | 2264 fps | 96.9% |
| Somchem S355 | <<locked>> | 82% | 31,865 psi | 51% | 2165 fps | 95.6% |
| Somchem S365 | <<locked>> | 90% | 29,544 psi | 48% | 2188 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 44,222 psi | 71% | 2280 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,073 psi | 63% | 2218 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,214 psi | 55% | 2195 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,230 psi | 57% | 2198 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 28,239 psi | 45% | 2067 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 92% | 37,391 psi | 60% | 2293 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 40,016 psi | 64% | 2290 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 33,866 psi | 55% | 2188 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 38,943 psi | 63% | 2339 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,212 psi | 50% | 2133 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 38,928 psi | 63% | 2326 fps | 99.1% |
| Winchester 760 | <<locked>> | 98% | 46,688 psi | 75% | 2484 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,795 psi | 58% | 2254 fps | 97.1% |
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 101 powders for .375 Ruger loaded with the .376 | 270gr | Peregrine Plainsmaster (VLR-4). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,661 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,661 fps. Accurate 4350 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (428 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.376" calls for a 1:15.0 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for .375 Ruger with the .376 | 270gr | Peregrine Plainsmaster (VLR-4) 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.