Load Specifications
Bullet Manufacturer:Winchester
Bullet Weight:300 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
Load data in caliber .375 Ruger with .375 | 300gr | Winchester Silvertip 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, ReloadSwiss RS 60 and Hodgdon Superformance.
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>> | 82% | 54,969 psi | 89% | 2359 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,215 psi | 87% | 2385 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,593 psi | 90% | 2441 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 52,852 psi | 85% | 2392 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,599 psi | 72% | 2359 fps | 97.9% |
| Accurate 4064 | <<locked>> | 88% | 54,360 psi | 88% | 2431 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,230 psi | 87% | 2510 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 54,244 psi | 87% | 2454 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,201 psi | 89% | 2457 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,257 psi | 84% | 2490 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 52,982 psi | 85% | 2408 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,331 psi | 88% | 2385 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,867 psi | 87% | 2562 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 51,895 psi | 84% | 2490 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,550 psi | 89% | 2477 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,825 psi | 90% | 2497 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,129 psi | 89% | 2559 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,794 psi | 85% | 2539 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,126 psi | 82% | 2480 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,395 psi | 68% | 2385 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,289 psi | 60% | 2300 fps | 96.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,718 psi | 77% | 2539 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,911 psi | 87% | 2470 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 52,591 psi | 85% | 2448 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,927 psi | 90% | 2470 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,549 psi | 88% | 2392 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,057 psi | 90% | 2480 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,388 psi | 86% | 2461 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 53,113 psi | 86% | 2507 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 92% | 53,679 psi | 86% | 2474 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 54,781 psi | 88% | 2464 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,172 psi | 89% | 2490 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,302 psi | 87% | 2493 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,490 psi | 86% | 2539 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,824 psi | 58% | 1503 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,912 psi | 90% | 2464 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,056 psi | 89% | 2444 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,636 psi | 88% | 2441 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,404 psi | 88% | 2428 fps | 98.6% |
| IMR 4350 | <<locked>> | 96% | 52,881 psi | 85% | 2448 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,375 psi | 88% | 2451 fps | 98.6% |
| IMR 4831 | <<locked>> | 98% | 54,708 psi | 88% | 2503 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 53,882 psi | 87% | 2477 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 52,982 psi | 85% | 2408 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,186 psi | 87% | 2434 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,505 psi | 86% | 2392 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,708 psi | 88% | 2438 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,070 psi | 87% | 2448 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 54,897 psi | 88% | 2480 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,072 psi | 60% | 2234 fps | 95.9% |
| Norma 201 | <<locked>> | 84% | 53,026 psi | 85% | 2408 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,621 psi | 86% | 2408 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,071 psi | 89% | 2484 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,403 psi | 86% | 2490 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 47,384 psi | 76% | 2497 fps | 97.6% |
| Norma URP | <<locked>> | 96% | 53,084 psi | 86% | 2500 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 55,753 psi | 90% | 2507 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,376 psi | 89% | 2543 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 53,156 psi | 86% | 2428 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,866 psi | 85% | 2441 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,303 psi | 58% | 1539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,519 psi | 86% | 2441 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,895 psi | 85% | 2507 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,562 psi | 85% | 2539 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,751 psi | 87% | 2530 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,098 psi | 86% | 2556 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 54,012 psi | 87% | 2388 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,577 psi | 86% | 2405 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,115 psi | 90% | 2484 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 54,114 psi | 87% | 2470 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,009 psi | 81% | 2467 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 94% | 55,927 psi | 90% | 2470 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,070 psi | 87% | 2448 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,186 psi | 87% | 2434 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,708 psi | 88% | 2438 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,897 psi | 88% | 2480 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,273 psi | 87% | 2493 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,405 psi | 89% | 2457 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,028 psi | 90% | 2474 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,143 psi | 87% | 2349 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,708 psi | 88% | 2352 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,027 psi | 87% | 2405 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,516 psi | 80% | 2461 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 53,795 psi | 87% | 2349 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,969 psi | 89% | 2448 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 52,939 psi | 85% | 2438 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,955 psi | 89% | 2543 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,778 psi | 82% | 2448 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 84% | 54,505 psi | 88% | 2333 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,490 psi | 86% | 2372 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,954 psi | 87% | 2385 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,230 psi | 87% | 2418 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,637 psi | 90% | 2493 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 53,505 psi | 86% | 2408 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,651 psi | 90% | 2428 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,607 psi | 88% | 2500 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,862 psi | 75% | 2451 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,477 psi | 89% | 2470 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,664 psi | 86% | 2451 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,374 psi | 86% | 2510 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,942 psi | 61% | 2408 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,014 psi | 90% | 2480 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% | 51,822 psi | 83% | 2323 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,614 psi | 72% | 2264 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,025 psi | 84% | 2398 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,294 psi | 70% | 2247 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 36,318 psi | 59% | 2218 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 42,192 psi | 68% | 2267 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,198 psi | 50% | 2126 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 47,776 psi | 77% | 2365 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 40,669 psi | 66% | 2241 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 45,861 psi | 74% | 2392 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,850 psi | 80% | 2365 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,850 psi | 82% | 2346 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,816 psi | 71% | 2408 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 45,818 psi | 74% | 2395 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,466 psi | 65% | 2260 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,410 psi | 70% | 2316 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,459 psi | 51% | 2136 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,099 psi | 57% | 2244 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 45,223 psi | 73% | 2388 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,470 psi | 44% | 2064 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,114 psi | 57% | 2251 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,504 psi | 54% | 2264 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,195 psi | 76% | 2375 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 40,379 psi | 65% | 2267 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 41,060 psi | 66% | 2241 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,372 psi | 83% | 2352 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,139 psi | 79% | 2392 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,002 psi | 66% | 2270 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 38,276 psi | 62% | 2264 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 86% | 44,454 psi | 72% | 2333 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 48,240 psi | 78% | 2375 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,964 psi | 47% | 2054 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,382 psi | 71% | 2356 fps | 100% |
| Hodgdon Superformance | 77.8 gr | 86% | 40,161 psi | 65% | 2323 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,716 psi | 43% | 1342 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,224 psi | 74% | 2333 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 48,312 psi | 78% | 2359 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,685 psi | 69% | 2267 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,991 psi | 72% | 2287 fps | 96.9% |
| IMR 4350 | <<locked>> | 88% | 41,220 psi | 66% | 2267 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,001 psi | 64% | 2224 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 30,400 psi | 49% | 2090 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 44,483 psi | 72% | 2339 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 49,850 psi | 80% | 2365 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,326 psi | 76% | 2346 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,369 psi | 76% | 2306 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 42,670 psi | 69% | 2267 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,157 psi | 57% | 2136 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 37,797 psi | 61% | 2205 fps | 95.2% |
| Lovex S071 | <<locked>> | 98% | 34,693 psi | 56% | 2188 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 46,833 psi | 75% | 2323 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,137 psi | 76% | 2323 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,772 psi | 69% | 2303 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 46,630 psi | 75% | 2392 fps | 95.4% |
| Norma MRP | <<locked>> | 94% | 38,740 psi | 62% | 2339 fps | 95% |
| Norma URP | <<locked>> | 80% | 31,560 psi | 51% | 2126 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 42,612 psi | 69% | 2320 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 37,420 psi | 60% | 2257 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 49,734 psi | 80% | 2382 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,559 psi | 80% | 2398 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,064 psi | 44% | 1375 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,278 psi | 66% | 2254 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,079 psi | 74% | 2408 fps | 99.6% |
| ReloadSwiss RS 60 | 68.5 gr | 80% | 37,318 psi | 60% | 2297 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,937 psi | 50% | 2136 fps | 95.1% |
| ReloadSwiss RS 70 | 71.3 gr | 82% | 33,011 psi | 53% | 2188 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 50,778 psi | 82% | 2346 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,614 psi | 72% | 2283 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,014 psi | 61% | 2218 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 50,763 psi | 82% | 2421 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 96% | 43,888 psi | 71% | 2369 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 41,060 psi | 66% | 2241 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,157 psi | 57% | 2136 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,326 psi | 76% | 2346 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,670 psi | 69% | 2267 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 37,797 psi | 61% | 2205 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,914 psi | 63% | 2260 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,370 psi | 78% | 2362 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,180 psi | 74% | 2339 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,037 psi | 77% | 2270 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,219 psi | 65% | 2162 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,102 psi | 63% | 2178 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 43,482 psi | 70% | 2365 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 47,630 psi | 77% | 2274 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,051 psi | 77% | 2356 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 38,725 psi | 62% | 2221 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 28,253 psi | 46% | 2087 fps | 97.9% |
| Somchem S385 | <<locked>> | 94% | 41,785 psi | 67% | 2310 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 48,457 psi | 78% | 2260 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,367 psi | 71% | 2257 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,744 psi | 72% | 2267 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,825 psi | 59% | 2165 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 32,837 psi | 53% | 2129 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 80% | 50,038 psi | 81% | 2365 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,076 psi | 69% | 2260 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,372 psi | 52% | 2129 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 29,544 psi | 48% | 2126 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,547 psi | 52% | 2106 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 50,169 psi | 81% | 2408 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 38,276 psi | 62% | 2264 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,528 psi | 44% | 2136 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,977 psi | 74% | 2346 fps | 99.9% |
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 Ruger loaded with the .375 | 300gr | Winchester Silvertip. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,562 fps; across all powders the maximum-charge window runs from 1,503 fps to 2,562 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 (428 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. 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, ReloadSwiss RS 60, Hodgdon Superformance rank at the top here: for .375 Ruger with the .375 | 300gr | Winchester Silvertip 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.