Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:300 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:1:6.0
Load data in caliber .375 Ruger with .376 | 300gr | Peregrine VRG-1 bullet and 103 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: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 55,651 psi | 90% | 2339 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,824 psi | 87% | 2365 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,243 psi | 86% | 2356 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,186 psi | 87% | 2408 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 54,491 psi | 88% | 2365 fps | 97.2% |
| Accurate 4064 | <<locked>> | 92% | 53,461 psi | 86% | 2398 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,011 psi | 85% | 2470 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 88% | 54,708 psi | 88% | 2431 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 55,796 psi | 90% | 2431 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,838 psi | 87% | 2388 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,491 psi | 88% | 2365 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,753 psi | 90% | 2480 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,302 psi | 87% | 2536 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,448 psi | 89% | 2448 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,332 psi | 89% | 2343 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,043 psi | 90% | 2467 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,503 psi | 83% | 2474 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 52,620 psi | 85% | 2510 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,318 psi | 59% | 2247 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,379 psi | 65% | 2379 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,476 psi | 88% | 2448 fps | 99.8% |
| Bofors RP3 | <<locked>> | 94% | 55,999 psi | 90% | 2464 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 52,895 psi | 85% | 2392 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,825 psi | 90% | 2375 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,982 psi | 85% | 2418 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,897 psi | 88% | 2500 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 54,491 psi | 88% | 2382 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,521 psi | 89% | 2405 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,519 psi | 86% | 2431 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 98% | 52,953 psi | 85% | 2474 fps | 98% |
| Hodgdon H4350 | <<locked>> | 96% | 54,027 psi | 87% | 2441 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 88% | 55,230 psi | 89% | 2441 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,558 psi | 77% | 2369 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,433 psi | 88% | 2467 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,679 psi | 86% | 2503 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,027 psi | 56% | 1457 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,229 psi | 86% | 2402 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,056 psi | 89% | 2421 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,347 psi | 89% | 2418 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,463 psi | 89% | 2402 fps | 98.1% |
| IMR 4198 | <<locked>> | 82% | 55,463 psi | 89% | 2306 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2411 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,882 psi | 88% | 2421 fps | 98% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,430 psi | 81% | 2421 fps | 99.5% |
| IMR 4895 | <<locked>> | 90% | 54,099 psi | 87% | 2451 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 53,838 psi | 87% | 2388 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,766 psi | 87% | 2375 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,186 psi | 87% | 2408 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,476 psi | 88% | 2369 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 54,795 psi | 88% | 2411 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,911 psi | 87% | 2411 fps | 99% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,563 psi | 88% | 2441 fps | 98.3% |
| Norma 201 | <<locked>> | 88% | 53,316 psi | 86% | 2382 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,838 psi | 87% | 2385 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,201 psi | 89% | 2457 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 53,461 psi | 86% | 2454 fps | 96.1% |
| Norma URPᴾ | <<locked>> | 100% | 52,373 psi | 84% | 2461 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 92% | 56,086 psi | 90% | 2480 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,300 psi | 83% | 2457 fps | 98.4% |
| Ramshot TAC | <<locked>> | 86% | 54,230 psi | 87% | 2408 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,708 psi | 87% | 2425 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,781 psi | 88% | 2392 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,462 psi | 57% | 1490 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,432 psi | 86% | 2375 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,114 psi | 87% | 2415 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,866 psi | 85% | 2480 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 52,373 psi | 84% | 2510 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,895 psi | 85% | 2490 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,185 psi | 86% | 2520 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 86% | 54,041 psi | 87% | 2362 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,766 psi | 87% | 2382 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,608 psi | 90% | 2451 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 52,895 psi | 85% | 2392 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,911 psi | 87% | 2411 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,186 psi | 87% | 2408 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,795 psi | 88% | 2411 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,563 psi | 88% | 2441 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,172 psi | 87% | 2467 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,999 psi | 90% | 2434 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,142 psi | 86% | 2408 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,332 psi | 89% | 2333 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,376 psi | 89% | 2329 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,389 psi | 88% | 2372 fps | 98% |
| Somchem S321 | <<locked>> | 84% | 55,071 psi | 89% | 2418 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,418 psi | 88% | 2329 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,593 psi | 90% | 2425 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 52,620 psi | 85% | 2408 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,746 psi | 75% | 2418 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,042 psi | 89% | 2300 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,492 psi | 89% | 2320 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,461 psi | 86% | 2352 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,375 psi | 88% | 2365 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,114 psi | 87% | 2388 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,129 psi | 89% | 2457 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 86% | 54,288 psi | 87% | 2388 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 56,028 psi | 90% | 2405 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2464 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,305 psi | 63% | 2313 fps | 98.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,028 psi | 90% | 2444 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 54,085 psi | 87% | 2431 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,953 psi | 85% | 2474 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,256 psi | 52% | 2238 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 88% | 52,823 psi | 85% | 2415 fps | 100% |
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% | 45,934 psi | 74% | 2224 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,183 psi | 81% | 2320 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,130 psi | 61% | 2159 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,859 psi | 71% | 2277 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 44,730 psi | 72% | 2231 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 36,085 psi | 58% | 2152 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 32,256 psi | 52% | 2133 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 42,395 psi | 68% | 2254 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 36,100 psi | 58% | 2129 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,541 psi | 72% | 2260 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 44,527 psi | 72% | 2251 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,112 psi | 84% | 2434 fps | 100% |
| Alliant Power Pro 2000-MR | 62.8 gr | 80% | 38,305 psi | 62% | 2277 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,346 psi | 57% | 2146 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,011 psi | 84% | 2306 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,101 psi | 61% | 2198 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 33,315 psi | 54% | 2152 fps | 95.7% |
| Alliant Reloder-17 | 61.9 gr | 80% | 30,458 psi | 49% | 2113 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 92% | 28,413 psi | 46% | 2064 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 35,027 psi | 56% | 2267 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,568 psi | 67% | 2257 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 34,679 psi | 56% | 2142 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 43,642 psi | 70% | 2254 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,398 psi | 75% | 2254 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,960 psi | 69% | 2277 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,572 psi | 77% | 2402 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 80% | 50,981 psi | 82% | 2339 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,779 psi | 83% | 2362 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,810 psi | 58% | 2149 fps | 96% |
| Hodgdon H414 | <<locked>> | 90% | 40,408 psi | 65% | 2280 fps | 95% |
| Hodgdon H4350 | <<locked>> | 92% | 47,456 psi | 76% | 2349 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 42,772 psi | 69% | 2264 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,384 psi | 46% | 2018 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,624 psi | 62% | 2238 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 92% | 43,236 psi | 70% | 2343 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,107 psi | 42% | 1302 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,118 psi | 66% | 2224 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 42,250 psi | 68% | 2257 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,884 psi | 61% | 2156 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,134 psi | 69% | 2221 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 52,344 psi | 84% | 2270 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 43,743 psi | 70% | 2277 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 42,888 psi | 69% | 2244 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 31,531 psi | 51% | 2100 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,059 psi | 63% | 2224 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 44,541 psi | 72% | 2260 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 50,111 psi | 81% | 2329 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,176 psi | 66% | 2234 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,728 psi | 69% | 2205 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 37,550 psi | 60% | 2159 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 37,028 psi | 60% | 2149 fps | 95.4% |
| Lovex S070 | <<locked>> | 90% | 39,711 psi | 64% | 2218 fps | 95% |
| Norma 201 | <<locked>> | 80% | 41,321 psi | 67% | 2211 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 41,655 psi | 67% | 2221 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,492 psi | 60% | 2188 fps | 98.3% |
| Norma 204 | <<locked>> | 98% | 49,980 psi | 81% | 2405 fps | 95.3% |
| Norma URP | <<locked>> | 86% | 33,040 psi | 53% | 2139 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 36,912 psi | 59% | 2198 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 39,581 psi | 64% | 2270 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 44,367 psi | 71% | 2267 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,714 psi | 70% | 2283 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,153 psi | 78% | 2306 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,411 psi | 43% | 1332 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,879 psi | 80% | 2329 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 38,870 psi | 63% | 2182 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,827 psi | 64% | 2283 fps | 98.3% |
| ReloadSwiss RS 60 | 61.9 gr | 80% | 32,518 psi | 52% | 2172 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 32,401 psi | 52% | 2152 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,623 psi | 61% | 2257 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 45,063 psi | 73% | 2244 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,378 psi | 63% | 2172 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 32,706 psi | 53% | 2100 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 43,642 psi | 70% | 2254 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,028 psi | 60% | 2149 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,176 psi | 66% | 2234 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,550 psi | 60% | 2159 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 39,711 psi | 64% | 2218 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,808 psi | 54% | 2142 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,467 psi | 68% | 2241 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,901 psi | 66% | 2228 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,033 psi | 69% | 2175 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,607 psi | 57% | 2064 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 41,597 psi | 67% | 2192 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 48,037 psi | 77% | 2329 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 42,453 psi | 68% | 2175 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,322 psi | 68% | 2241 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 33,649 psi | 54% | 2106 fps | 97.7% |
| Somchem S365 | <<locked>> | 82% | 25,788 psi | 42% | 2001 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 48,689 psi | 78% | 2224 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,366 psi | 70% | 2169 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,754 psi | 62% | 2159 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,566 psi | 64% | 2169 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,053 psi | 52% | 2054 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 32,358 psi | 52% | 2096 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 44,440 psi | 72% | 2257 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 37,971 psi | 61% | 2159 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 33,968 psi | 55% | 2142 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 30,095 psi | 48% | 2123 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,485 psi | 46% | 1988 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 44,092 psi | 71% | 2297 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 40,567 psi | 65% | 2283 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 96% | 28,384 psi | 46% | 2126 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,248 psi | 65% | 2231 fps | 99.2% |
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 Ruger loaded with the .376 | 300gr | Peregrine VRG-1. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,536 fps; across all powders the maximum-charge window runs from 1,457 fps to 2,536 fps. Accurate 4350 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 (428 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.376" calls for a 1:6.0 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 Ruger with the .376 | 300gr | Peregrine VRG-1 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.