Load Specifications
Bullet Manufacturer:North Fork
Bullet Weight:350 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:.375 Blaser Mag. load data
Case Length (l3):2.814"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:107.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:60,916 psi
Recommended Twist Rate:1:16.0
Load data in caliber .375 Blaser Mag. with .375 | 350gr | North Fork Semi Spitz bullet and 106 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and ReloadSwiss RS 62.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 53,824 psi | 88% | 2267 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,822 psi | 85% | 2287 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,514 psi | 78% | 2323 fps | 99.6% |
| Accurate 4064 | <<locked>> | 86% | 53,983 psi | 89% | 2313 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,882 psi | 88% | 2411 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 49,124 psi | 81% | 2438 fps | 96% |
| ADI AR 2206H | <<locked>> | 82% | 53,417 psi | 88% | 2339 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,534 psi | 90% | 2346 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,940 psi | 90% | 2448 fps | 98.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 49,255 psi | 81% | 2395 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,040 psi | 87% | 2451 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,969 psi | 90% | 2362 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,025 psi | 85% | 2343 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,752 psi | 90% | 2454 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,272 psi | 86% | 2434 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,867 psi | 88% | 2438 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,543 psi | 78% | 2395 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,759 psi | 73% | 2343 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,349 psi | 65% | 2280 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,705 psi | 83% | 2503 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,113 psi | 87% | 2359 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 43,714 psi | 72% | 2333 fps | 97.2% |
| Bofors RP3 | <<locked>> | 86% | 52,185 psi | 86% | 2336 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,543 psi | 78% | 2395 fps | 98.1% |
| Bofors RP7 | <<locked>> | 90% | 51,822 psi | 85% | 2323 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 52,721 psi | 87% | 2352 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 52,736 psi | 87% | 2411 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 90% | 53,040 psi | 87% | 2375 fps | 98.9% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 52,765 psi | 87% | 2398 fps | 96.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 51,692 psi | 85% | 2382 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 82% | 53,998 psi | 89% | 2346 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,824 psi | 90% | 2385 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,737 psi | 88% | 2379 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 38,435 psi | 63% | 2297 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 92% | 52,504 psi | 86% | 2444 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,129 psi | 59% | 1414 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,114 psi | 90% | 2346 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,636 psi | 90% | 2320 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,099 psi | 89% | 2329 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,417 psi | 88% | 2316 fps | 99.5% |
| IMR 4350 | <<locked>> | 94% | 52,460 psi | 86% | 2356 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,606 psi | 88% | 2349 fps | 99.5% |
| IMR 4831 | <<locked>> | 96% | 54,157 psi | 89% | 2398 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 53,345 psi | 88% | 2365 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 54,636 psi | 90% | 2388 fps | 97.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 46,789 psi | 77% | 2369 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 82% | 53,563 psi | 88% | 2316 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,765 psi | 87% | 2274 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,070 psi | 89% | 2323 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,243 psi | 87% | 2343 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 54,418 psi | 89% | 2382 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,624 psi | 65% | 2205 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 52,257 psi | 86% | 2290 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,924 psi | 87% | 2287 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,462 psi | 89% | 2369 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,562 psi | 86% | 2395 fps | 98.5% |
| Norma MRPᴾ | <<locked>> | 100% | 50,140 psi | 82% | 2464 fps | 99.5% |
| Norma URP | <<locked>> | 94% | 52,794 psi | 87% | 2398 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,042 psi | 90% | 2395 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 46,485 psi | 76% | 2375 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 54,665 psi | 90% | 2444 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 41,176 psi | 68% | 2274 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,738 psi | 60% | 1447 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,707 psi | 87% | 2339 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 52,475 psi | 86% | 2395 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 51,837 psi | 85% | 2425 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,490 psi | 88% | 2431 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,185 psi | 86% | 2457 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 37,898 psi | 62% | 2287 fps | 97% |
| Rottweil R 902 | <<locked>> | 84% | 52,852 psi | 87% | 2290 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 52,069 psi | 85% | 2329 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 53,374 psi | 88% | 2375 fps | 97.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,910 psi | 87% | 2425 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 90% | 51,822 psi | 85% | 2323 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,243 psi | 87% | 2343 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,563 psi | 88% | 2316 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,070 psi | 89% | 2323 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,418 psi | 89% | 2382 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,490 psi | 88% | 2385 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,418 psi | 89% | 2346 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 51,822 psi | 85% | 2320 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,316 psi | 88% | 2228 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,954 psi | 89% | 2234 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,243 psi | 87% | 2306 fps | 99.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,417 psi | 86% | 2421 fps | 98.8% |
| Somchem S335 | <<locked>> | 82% | 52,924 psi | 87% | 2228 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,070 psi | 89% | 2333 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 52,359 psi | 86% | 2329 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 54,868 psi | 90% | 2372 fps | 97.2% |
| Somchem S365 | <<locked>> | 98% | 54,810 psi | 90% | 2438 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,751 psi | 88% | 2405 fps | 99.4% |
| Vihtavuori N133 | <<locked>> | 82% | 53,751 psi | 88% | 2211 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,011 psi | 87% | 2251 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,447 psi | 88% | 2270 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,563 psi | 88% | 2306 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,056 psi | 90% | 2392 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,224 psi | 76% | 2293 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 86% | 54,810 psi | 90% | 2310 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,853 psi | 88% | 2398 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,038 psi | 82% | 2402 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 50,821 psi | 83% | 2454 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,447 psi | 89% | 2365 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,736 psi | 87% | 2411 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,277 psi | 66% | 2388 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,735 psi | 85% | 2326 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,256 psi | 83% | 2352 fps | 98.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 47,268 psi | 78% | 2192 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,629 psi | 75% | 2198 fps | 98% |
| Accurate 3100 | <<locked>> | 86% | 29,747 psi | 49% | 2014 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 44,773 psi | 74% | 2198 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,576 psi | 55% | 2096 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 98% | 45,934 psi | 75% | 2388 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 50,343 psi | 83% | 2300 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,699 psi | 70% | 2178 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 37,579 psi | 62% | 2169 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 43,163 psi | 71% | 2293 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,253 psi | 76% | 2356 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,786 psi | 70% | 2198 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,905 psi | 75% | 2257 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,257 psi | 55% | 2103 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,217 psi | 61% | 2208 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 37,144 psi | 61% | 2169 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 92% | 36,825 psi | 60% | 2208 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,265 psi | 40% | 1913 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 29,109 psi | 48% | 2051 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 82% | 27,195 psi | 45% | 2044 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,647 psi | 82% | 2313 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 38,595 psi | 63% | 2241 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 42,772 psi | 70% | 2208 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 36,825 psi | 60% | 2208 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 38,159 psi | 63% | 2106 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 80% | 43,366 psi | 71% | 2218 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 35,592 psi | 58% | 2136 fps | 96.6% |
| Hodgdon H4350 | <<locked>> | 80% | 38,638 psi | 63% | 2149 fps | 96% |
| Hodgdon H4831 | <<locked>> | 96% | 46,166 psi | 76% | 2300 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 45,281 psi | 74% | 2287 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 50,865 psi | 84% | 2306 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,748 psi | 50% | 2018 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,021 psi | 77% | 2293 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 36,245 psi | 60% | 2247 fps | 95.1% |
| Hodgdon Superformance | 69 gr | 80% | 34,476 psi | 57% | 2139 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 44% | 1260 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,660 psi | 80% | 2264 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,271 psi | 84% | 2283 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,875 psi | 74% | 2205 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,297 psi | 78% | 2231 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 33,924 psi | 56% | 2051 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,552 psi | 65% | 2133 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 32,518 psi | 53% | 2060 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 47,079 psi | 77% | 2280 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 45,498 psi | 75% | 2257 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 43,801 psi | 72% | 2320 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 80% | 50,154 psi | 82% | 2274 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,719 psi | 82% | 2234 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,121 psi | 74% | 2205 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,130 psi | 61% | 2093 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 35,360 psi | 58% | 2080 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 28,863 psi | 47% | 1995 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 49,182 psi | 81% | 2251 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,617 psi | 81% | 2247 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,281 psi | 74% | 2247 fps | 100% |
| Norma 204 | <<locked>> | 84% | 37,855 psi | 62% | 2162 fps | 95.1% |
| Norma MRP | <<locked>> | 88% | 33,707 psi | 55% | 2172 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,663 psi | 55% | 2093 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 45,005 psi | 74% | 2264 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 43,439 psi | 71% | 2323 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 32,634 psi | 54% | 2083 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 96% | 35,955 psi | 59% | 2175 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 45% | 1293 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,584 psi | 72% | 2208 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,066 psi | 81% | 2349 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,566 psi | 65% | 2247 fps | 100% |
| ReloadSwiss RS 62 | 65.2 gr | 80% | 33,054 psi | 54% | 2110 fps | 98.1% |
| ReloadSwiss RS 70 | 66.3 gr | 80% | 32,634 psi | 54% | 2116 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 35,563 psi | 58% | 2238 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 46,847 psi | 77% | 2211 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,408 psi | 66% | 2169 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 41,611 psi | 68% | 2198 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 35,969 psi | 59% | 2152 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 38,159 psi | 63% | 2106 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,130 psi | 61% | 2093 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,154 psi | 82% | 2274 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,121 psi | 74% | 2205 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 35,360 psi | 58% | 2080 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,321 psi | 68% | 2211 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,850 psi | 83% | 2303 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,646 psi | 80% | 2277 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,343 psi | 83% | 2192 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,293 psi | 69% | 2090 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,274 psi | 60% | 2047 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 37,942 psi | 62% | 2192 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,922 psi | 82% | 2192 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,531 psi | 83% | 2290 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,901 psi | 67% | 2165 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 45,237 psi | 74% | 2238 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 30,182 psi | 50% | 2060 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 34,301 psi | 56% | 2096 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 50,807 psi | 83% | 2178 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,949 psi | 77% | 2178 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,166 psi | 77% | 2195 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,015 psi | 64% | 2110 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,041 psi | 58% | 2093 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 92% | 35,853 psi | 59% | 2119 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 45,368 psi | 74% | 2192 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,447 psi | 57% | 2096 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 26,121 psi | 43% | 1972 fps | 96.6% |
| Vihtavuori N560 | <<locked>> | 96% | 44,614 psi | 73% | 2356 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,287 psi | 56% | 2070 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 35,737 psi | 59% | 2139 fps | 96.6% |
| Winchester StaBALL HD | <<locked>> | 82% | 22,727 psi | 37% | 1932 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,327 psi | 79% | 2280 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 38,348 psi | 63% | 2169 fps | 95.4% |
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 106 powders for .375 Blaser Mag. loaded with the .375 | 350gr | North Fork Semi Spitz. Alliant Reloder-26 delivers the highest muzzle velocity at 2,503 fps; across all powders the maximum-charge window runs from 1,414 fps to 2,503 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 350.0 gr projectile in 0.375" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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, Hodgdon Superformance, ReloadSwiss RS 62 rank at the top here: for .375 Blaser Mag. with the .375 | 350gr | North Fork Semi Spitz 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.