Load Specifications
Bullet:.375 | 300gr | Nosler Solid
Bullet Manufacturer:Nosler
Bullet Weight:300 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:.375 Weath. Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:105 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:6.0
Load data in caliber .375 Weath. Mag. with .375 | 300gr | Nosler Solid bullet and 104 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 Alliant Power Pro 2000-MR.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 54,404 psi | 85% | 2402 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,057 psi | 88% | 2467 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,159 psi | 88% | 2464 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,389 psi | 85% | 2484 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,579 psi | 87% | 2474 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 39,610 psi | 62% | 2333 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 55,985 psi | 88% | 2507 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,724 psi | 87% | 2592 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 88% | 56,724 psi | 89% | 2539 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 57,580 psi | 90% | 2539 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,622 psi | 87% | 2493 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,681 psi | 89% | 2467 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,333 psi | 88% | 2654 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,450 psi | 90% | 2556 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,363 psi | 90% | 2441 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,636 psi | 86% | 2533 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,330 psi | 84% | 2589 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,534 psi | 85% | 2625 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,159 psi | 60% | 2362 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,366 psi | 66% | 2503 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,565 psi | 89% | 2559 fps | 99.9% |
| Bofors RP3 | <<locked>> | 92% | 54,520 psi | 85% | 2530 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,810 psi | 86% | 2503 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,450 psi | 90% | 2474 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,056 psi | 86% | 2526 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,188 psi | 90% | 2618 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 56,492 psi | 89% | 2484 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,537 psi | 90% | 2510 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,608 psi | 87% | 2543 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 98% | 54,926 psi | 86% | 2589 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 96% | 55,898 psi | 88% | 2556 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 88% | 57,305 psi | 90% | 2549 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,603 psi | 78% | 2480 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,507 psi | 89% | 2579 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,550 psi | 87% | 2621 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,433 psi | 56% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,071 psi | 86% | 2507 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 57,261 psi | 90% | 2526 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,159 psi | 90% | 2523 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,232 psi | 90% | 2510 fps | 98.5% |
| IMR 4198 | <<locked>> | 82% | 57,203 psi | 90% | 2398 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,752 psi | 86% | 2526 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,782 psi | 89% | 2533 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,605 psi | 82% | 2536 fps | 99.7% |
| IMR 4895 | <<locked>> | 90% | 56,014 psi | 88% | 2559 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,622 psi | 87% | 2493 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,057 psi | 88% | 2484 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,536 psi | 89% | 2520 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,231 psi | 88% | 2470 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 56,782 psi | 89% | 2516 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,043 psi | 88% | 2526 fps | 99.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 2556 fps | 98.7% |
| Norma 201 | <<locked>> | 88% | 55,434 psi | 87% | 2487 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,043 psi | 88% | 2490 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,435 psi | 90% | 2569 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2572 fps | 96.7% |
| Norma URPᴾ | <<locked>> | 100% | 54,549 psi | 85% | 2579 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 54,346 psi | 85% | 2546 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,403 psi | 84% | 2575 fps | 98.8% |
| Ramshot TAC | <<locked>> | 86% | 55,912 psi | 88% | 2516 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,608 psi | 87% | 2533 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,724 psi | 89% | 2500 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,911 psi | 56% | 1535 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,245 psi | 87% | 2474 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,898 psi | 88% | 2526 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,114 psi | 86% | 2595 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,476 psi | 85% | 2625 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,187 psi | 86% | 2612 fps | 99.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,027 psi | 86% | 2638 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 86% | 56,463 psi | 88% | 2467 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,854 psi | 88% | 2487 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,317 psi | 85% | 2520 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,810 psi | 86% | 2503 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,043 psi | 88% | 2526 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,536 psi | 89% | 2520 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,782 psi | 89% | 2516 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 2556 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,173 psi | 88% | 2579 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,404 psi | 85% | 2497 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,056 psi | 86% | 2516 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,116 psi | 90% | 2431 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,203 psi | 90% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,507 psi | 89% | 2484 fps | 98.4% |
| Somchem S321 | <<locked>> | 84% | 56,927 psi | 89% | 2523 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,318 psi | 88% | 2428 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,740 psi | 90% | 2536 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 54,723 psi | 86% | 2516 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,892 psi | 77% | 2533 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 45,600 psi | 71% | 2428 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 84% | 56,956 psi | 89% | 2392 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,319 psi | 90% | 2415 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,709 psi | 87% | 2451 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,492 psi | 89% | 2470 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,362 psi | 88% | 2500 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,392 psi | 90% | 2575 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 86% | 56,362 psi | 88% | 2493 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,418 psi | 85% | 2467 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 2579 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,437 psi | 65% | 2428 fps | 98.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,682 psi | 90% | 2556 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,999 psi | 88% | 2536 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,143 psi | 86% | 2592 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,084 psi | 53% | 2365 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,897 psi | 86% | 2523 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 48,051 psi | 75% | 2320 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,562 psi | 82% | 2425 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,828 psi | 64% | 2260 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,674 psi | 75% | 2395 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,658 psi | 72% | 2326 fps | 95.6% |
| Accurate 3100 | <<locked>> | 98% | 36,912 psi | 58% | 2283 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 38,609 psi | 61% | 2257 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,155 psi | 50% | 2198 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 44,237 psi | 69% | 2356 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 37,681 psi | 59% | 2228 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,296 psi | 73% | 2362 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 46,586 psi | 73% | 2346 fps | 100% |
| Alliant Power Pro 2000-MR | 65.8 gr | 80% | 40,059 psi | 63% | 2385 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,217 psi | 58% | 2247 fps | 99% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,911 psi | 84% | 2398 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,958 psi | 63% | 2303 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,793 psi | 51% | 2208 fps | 95.8% |
| Alliant Reloder-17 | 64.8 gr | 80% | 32,024 psi | 50% | 2221 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,195 psi | 44% | 2126 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 94% | 34,461 psi | 54% | 2336 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,265 psi | 68% | 2362 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 36,825 psi | 58% | 2251 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 42,815 psi | 67% | 2316 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,124 psi | 75% | 2349 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,933 psi | 70% | 2382 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,705 psi | 78% | 2513 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 80% | 52,837 psi | 83% | 2438 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,708 psi | 84% | 2464 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,579 psi | 59% | 2251 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 39,653 psi | 62% | 2343 fps | 95% |
| Hodgdon H4350 | <<locked>> | 90% | 46,224 psi | 72% | 2411 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 44,614 psi | 70% | 2365 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,224 psi | 44% | 2073 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,596 psi | 64% | 2346 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 92% | 45,005 psi | 71% | 2461 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,411 psi | 41% | 1335 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,801 psi | 67% | 2323 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 44,251 psi | 69% | 2356 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,523 psi | 62% | 2254 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,959 psi | 66% | 2274 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 53,998 psi | 85% | 2359 fps | 100% |
| IMR 4350 | <<locked>> | 92% | 42,859 psi | 67% | 2343 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 41,872 psi | 66% | 2300 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 31,343 psi | 49% | 2162 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 40,915 psi | 64% | 2329 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 46,296 psi | 73% | 2362 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 52,330 psi | 82% | 2434 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,308 psi | 68% | 2339 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,280 psi | 69% | 2297 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 39,392 psi | 62% | 2257 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 36,637 psi | 57% | 2208 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 39,146 psi | 61% | 2277 fps | 95% |
| Norma 201 | <<locked>> | 80% | 43,439 psi | 68% | 2316 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 43,656 psi | 68% | 2320 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,320 psi | 62% | 2293 fps | 98.8% |
| Norma 204 | <<locked>> | 96% | 48,602 psi | 76% | 2470 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 32,706 psi | 51% | 2201 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 38,696 psi | 61% | 2303 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 38,696 psi | 61% | 2333 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 46,035 psi | 72% | 2369 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,527 psi | 71% | 2385 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,893 psi | 78% | 2405 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,745 psi | 42% | 1368 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,764 psi | 81% | 2431 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,116 psi | 60% | 2238 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,887 psi | 66% | 2392 fps | 98.9% |
| ReloadSwiss RS 60 | 64.8 gr | 80% | 34,098 psi | 53% | 2280 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 31,966 psi | 50% | 2211 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,753 psi | 58% | 2320 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 47,326 psi | 74% | 2346 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,336 psi | 65% | 2274 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 34,621 psi | 54% | 2201 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 42,815 psi | 67% | 2316 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,637 psi | 57% | 2208 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,308 psi | 68% | 2339 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,392 psi | 62% | 2257 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 39,146 psi | 61% | 2277 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,491 psi | 56% | 2244 fps | 97.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,382 psi | 70% | 2349 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,656 psi | 67% | 2329 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,657 psi | 70% | 2267 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,130 psi | 58% | 2152 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 40,756 psi | 64% | 2251 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 49,908 psi | 78% | 2431 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,396 psi | 70% | 2274 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,106 psi | 69% | 2346 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 35,607 psi | 56% | 2208 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 25,788 psi | 40% | 2060 fps | 96.1% |
| Somchem S385 | <<locked>> | 98% | 42,728 psi | 67% | 2379 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 50,401 psi | 79% | 2316 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,991 psi | 71% | 2260 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,698 psi | 64% | 2254 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,263 psi | 65% | 2260 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,707 psi | 53% | 2152 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 32,082 psi | 50% | 2156 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 46,383 psi | 73% | 2359 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 39,639 psi | 62% | 2254 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,547 psi | 53% | 2205 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 90% | 30,153 psi | 47% | 2195 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,892 psi | 47% | 2087 fps | 96.6% |
| Winchester 748 | <<locked>> | 80% | 45,963 psi | 72% | 2402 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 39,653 psi | 62% | 2343 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,210 psi | 44% | 2195 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,163 psi | 66% | 2336 fps | 99.5% |
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 104 powders for .375 Weath. Mag. loaded with the .375 | 300gr | Nosler Solid. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,654 fps; across all powders the maximum-charge window runs from 1,499 fps to 2,654 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, 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, Accurate 4350, Alliant Reloder-16 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, Alliant Power Pro 2000-MR rank at the top here: for .375 Weath. Mag. with the .375 | 300gr | Nosler Solid 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.