Load Specifications
Bullet:.375 | 300gr | Woodleigh FMJ
Bullet Manufacturer:Woodleigh
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
Recommended Twist Rate:1:6.0
Load data in caliber .375 Ruger with .375 | 300gr | Woodleigh FMJ bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Winchester 760.
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>> | 84% | 55,970 psi | 90% | 2352 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,607 psi | 88% | 2375 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 52,663 psi | 85% | 2392 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 53,737 psi | 87% | 2382 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,597 psi | 67% | 2297 fps | 96.9% |
| Accurate 4064 | <<locked>> | 90% | 54,563 psi | 88% | 2418 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,433 psi | 88% | 2500 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 55,071 psi | 89% | 2451 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 55,898 psi | 90% | 2448 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 84% | 53,940 psi | 87% | 2405 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,969 psi | 89% | 2379 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,650 psi | 88% | 2552 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,081 psi | 79% | 2425 fps | 95.8% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,081 psi | 79% | 2425 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 52,620 psi | 85% | 2425 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 53,142 psi | 86% | 2444 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,506 psi | 89% | 2546 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,113 psi | 86% | 2530 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,711 psi | 64% | 2323 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,396 psi | 72% | 2464 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,679 psi | 88% | 2461 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 53,113 psi | 86% | 2438 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 53,243 psi | 86% | 2411 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,593 psi | 90% | 2385 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,388 psi | 86% | 2431 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,274 psi | 89% | 2516 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,099 psi | 87% | 2451 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 96% | 53,679 psi | 86% | 2497 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 94% | 54,447 psi | 88% | 2464 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 86% | 55,608 psi | 90% | 2457 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,837 psi | 84% | 2434 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,071 psi | 89% | 2487 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,114 psi | 87% | 2526 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,563 psi | 57% | 1480 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,214 psi | 86% | 2415 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,550 psi | 89% | 2434 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,463 psi | 89% | 2434 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,448 psi | 89% | 2418 fps | 98.4% |
| IMR 4350 | <<locked>> | 98% | 53,606 psi | 86% | 2438 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,172 psi | 89% | 2441 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,824 psi | 88% | 2487 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 54,505 psi | 88% | 2467 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 53,940 psi | 87% | 2405 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,766 psi | 88% | 2425 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,636 psi | 88% | 2385 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,419 psi | 89% | 2428 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,578 psi | 88% | 2434 fps | 99.3% |
| Lovex S070 | <<locked>> | 98% | 55,332 psi | 89% | 2464 fps | 98.7% |
| Norma 201 | <<locked>> | 86% | 53,766 psi | 87% | 2398 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,375 psi | 88% | 2402 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,883 psi | 90% | 2477 fps | 100% |
| Norma 204 | <<locked>> | 98% | 53,911 psi | 87% | 2477 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 44,440 psi | 72% | 2428 fps | 96.4% |
| Norma URP | <<locked>> | 98% | 53,330 psi | 86% | 2484 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 52,852 psi | 85% | 2454 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,651 psi | 90% | 2530 fps | 99.2% |
| Ramshot TAC | <<locked>> | 84% | 54,114 psi | 87% | 2421 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 53,867 psi | 87% | 2438 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,650 psi | 88% | 2405 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,056 psi | 58% | 1516 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,404 psi | 88% | 2434 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 53,461 psi | 86% | 2500 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 52,939 psi | 85% | 2526 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 53,969 psi | 87% | 2516 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 53,534 psi | 86% | 2539 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 54,911 psi | 88% | 2382 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,360 psi | 88% | 2398 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 52,953 psi | 85% | 2431 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 53,243 psi | 86% | 2411 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,578 psi | 88% | 2434 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,766 psi | 88% | 2425 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,419 psi | 89% | 2428 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,332 psi | 89% | 2464 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,636 psi | 88% | 2484 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 52,707 psi | 85% | 2405 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,287 psi | 86% | 2425 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,158 psi | 89% | 2343 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,347 psi | 89% | 2343 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,839 psi | 88% | 2395 fps | 98.3% |
| Somchem S321 | <<locked>> | 82% | 55,158 psi | 89% | 2431 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,578 psi | 88% | 2343 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,767 psi | 90% | 2441 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 53,490 psi | 86% | 2431 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,314 psi | 83% | 2487 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,819 psi | 77% | 2388 fps | 96.7% |
| Vihtavuori N130 | <<locked>> | 82% | 54,940 psi | 89% | 2310 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,419 psi | 89% | 2329 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,041 psi | 87% | 2365 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,897 psi | 88% | 2382 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,810 psi | 88% | 2411 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,028 psi | 90% | 2480 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 54,389 psi | 88% | 2402 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 52,997 psi | 85% | 2382 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 54,911 psi | 88% | 2487 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,671 psi | 70% | 2388 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,130 psi | 90% | 2461 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,462 psi | 88% | 2444 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 53,679 psi | 86% | 2497 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,534 psi | 57% | 2333 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,229 psi | 86% | 2431 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% | 49,429 psi | 80% | 2277 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,293 psi | 68% | 2221 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,284 psi | 79% | 2349 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,106 psi | 71% | 2241 fps | 95.4% |
| Accurate 3100 | <<locked>> | 96% | 36,260 psi | 58% | 2205 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 39,972 psi | 64% | 2218 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 31,386 psi | 51% | 2119 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 45,556 psi | 73% | 2316 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 38,798 psi | 63% | 2188 fps | 98.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,630 psi | 77% | 2320 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,182 psi | 78% | 2300 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,568 psi | 67% | 2349 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 46,166 psi | 74% | 2379 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 46,166 psi | 74% | 2379 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,464 psi | 62% | 2208 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,249 psi | 66% | 2260 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 31,821 psi | 51% | 2129 fps | 95.5% |
| Alliant Reloder-17 | 65 gr | 80% | 33,127 psi | 53% | 2185 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 27,528 psi | 44% | 2051 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 92% | 33,707 psi | 54% | 2251 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,759 psi | 72% | 2320 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 38,189 psi | 62% | 2215 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 44,353 psi | 71% | 2280 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,385 psi | 80% | 2306 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,673 psi | 75% | 2343 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,474 psi | 83% | 2467 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 39,030 psi | 63% | 2218 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 41,133 psi | 66% | 2303 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 44,991 psi | 72% | 2323 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 45,963 psi | 74% | 2326 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,412 psi | 44% | 1998 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,090 psi | 68% | 2303 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 90% | 43,671 psi | 70% | 2365 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,542 psi | 43% | 1322 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,121 psi | 71% | 2283 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 45,759 psi | 74% | 2313 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,698 psi | 66% | 2218 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,134 psi | 69% | 2234 fps | 96% |
| IMR 4350 | <<locked>> | 90% | 41,742 psi | 67% | 2257 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,596 psi | 65% | 2218 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 30,443 psi | 49% | 2083 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 42,250 psi | 68% | 2287 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 47,630 psi | 77% | 2320 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,875 psi | 72% | 2297 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,440 psi | 73% | 2257 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 40,625 psi | 65% | 2221 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 35,592 psi | 57% | 2129 fps | 95.3% |
| Lovex S070 | <<locked>> | 88% | 40,669 psi | 66% | 2244 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 44,730 psi | 72% | 2274 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,005 psi | 73% | 2277 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,611 psi | 65% | 2254 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 47,152 psi | 76% | 2379 fps | 95% |
| Norma MRP | <<locked>> | 98% | 41,611 psi | 67% | 2375 fps | 95.5% |
| Norma URP | <<locked>> | 82% | 31,836 psi | 51% | 2119 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 40,306 psi | 65% | 2267 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 37,652 psi | 61% | 2244 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 47,572 psi | 77% | 2329 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,181 psi | 76% | 2346 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,343 psi | 83% | 2362 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,890 psi | 43% | 1355 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,320 psi | 63% | 2201 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,482 psi | 70% | 2352 fps | 99.2% |
| ReloadSwiss RS 60 | 65 gr | 80% | 35,273 psi | 57% | 2241 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,286 psi | 54% | 2178 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,723 psi | 58% | 2231 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 48,646 psi | 78% | 2303 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,569 psi | 69% | 2234 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 35,868 psi | 58% | 2165 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 44,353 psi | 71% | 2280 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,592 psi | 57% | 2129 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,875 psi | 72% | 2297 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,625 psi | 65% | 2221 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 40,669 psi | 66% | 2244 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,782 psi | 59% | 2208 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,818 psi | 74% | 2306 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,976 psi | 71% | 2290 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,876 psi | 74% | 2224 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,232 psi | 62% | 2116 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 39,610 psi | 64% | 2172 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 51,532 psi | 83% | 2385 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,643 psi | 74% | 2231 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,542 psi | 73% | 2303 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 36,782 psi | 59% | 2172 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 26,745 psi | 43% | 2034 fps | 96.8% |
| Somchem S385 | <<locked>> | 96% | 41,829 psi | 67% | 2293 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 51,706 psi | 83% | 2270 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,238 psi | 74% | 2218 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,032 psi | 68% | 2211 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,554 psi | 69% | 2221 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,853 psi | 56% | 2113 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 33,214 psi | 54% | 2123 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 47,834 psi | 77% | 2316 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,104 psi | 66% | 2218 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,590 psi | 53% | 2123 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 29,530 psi | 48% | 2116 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,893 psi | 50% | 2054 fps | 97.2% |
| Winchester 748 | <<locked>> | 80% | 47,543 psi | 77% | 2356 fps | 100% |
| Winchester 760 | 70.1 gr | 88% | 41,321 psi | 67% | 2306 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,528 psi | 44% | 2113 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,598 psi | 70% | 2293 fps | 99.7% |
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 100 powders for .375 Ruger loaded with the .375 | 300gr | Woodleigh FMJ. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,552 fps; across all powders the maximum-charge window runs from 1,480 fps to 2,552 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (428 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Power Pro Varmint, 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. Alliant Reloder-17, ReloadSwiss RS 60, Winchester 760 rank at the top here: for .375 Ruger with the .375 | 300gr | Woodleigh FMJ 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.