Load data for .375 Fl. Mag. N.E. + .375 | 320gr | CutEdge MTH

.375 Fl. Mag. N.E. cartridge drawing
Cutting Edge logo

Load Specifications

Bullet Manufacturer:Cutting Edge
Bullet Weight:320 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Case Length (l3):2.94"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:94.1 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:23.62"
Max. allowed Pressure:47,137 psi
Recommended Twist Rate:1:12.5

Load data in caliber .375 Fl. Mag. N.E. with .375 | 320gr | CutEdge MTH bullet and 135 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and SNPE Vectan SP 11.

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: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>86%40,089 psi85%2106 fps100%
Accurate 2495<<locked>>86%40,683 psi86%2119 fps100%
Accurate 2520<<locked>>82%42,076 psi89%2152 fps100%
Accurate 4064<<locked>>88%40,248 psi85%2139 fps100%
Accurate 4064<<locked>>88%41,075 psi87%2156 fps100%
Accurate 4350<<locked>>98%41,147 psi87%2215 fps97.5%
Accurate 4350<<locked>>98%42,032 psi89%2234 fps97.8%
ADI AR 2206H<<locked>>84%42,496 psi90%2159 fps98.7%
ADI AR 2206H<<locked>>82%40,480 psi86%2133 fps98.4%
ADI AR 2208<<locked>>88%40,959 psi87%2119 fps97.8%
ADI AR 2208<<locked>>88%41,640 psi88%2139 fps98%
ADI Benchmark 8208<<locked>>82%41,959 psi89%2126 fps99.4%
Alliant AR-Comp<<locked>>82%41,205 psi87%2119 fps100%
Alliant AR-Comp<<locked>>82%41,901 psi89%2133 fps100%
Alliant Power Pro 2000-MR<<locked>>86%41,046 psi87%2228 fps97.7%
Alliant Power Pro 2000-MR<<locked>>86%41,858 psi89%2251 fps98%
Alliant Reloder- TS 15.5<<locked>>90%42,380 psi90%2178 fps99.3%
Alliant Reloder- TS 15.5<<locked>>88%40,567 psi86%2156 fps99.1%
Alliant Reloder-15<<locked>>86%40,350 psi86%2146 fps97.9%
Alliant Reloder-15<<locked>>86%41,075 psi87%2165 fps98.2%
Alliant Reloder-16<<locked>>98%42,018 psi89%2224 fps97.7%
Alliant Reloder-16<<locked>>96%40,321 psi86%2205 fps97.4%
Alliant Reloder-17<<locked>>94%42,148 psi89%2257 fps99.1%
Alliant Reloder-17<<locked>>92%40,161 psi85%2231 fps98.9%
Alliant Reloder-23ᴾ<<locked>>100%31,734 psi67%2064 fps96%
Baschieri & Pellagri 107<<locked>>84%41,510 psi88%2165 fps97.6%
Baschieri & Pellagri 107<<locked>>84%42,163 psi89%2182 fps97.8%
Bofors RP3<<locked>>90%41,742 psi89%2182 fps99.3%
Bofors RP3<<locked>>88%39,871 psi85%2159 fps99.1%
Hodgdon BL-C2<<locked>>82%40,030 psi85%2142 fps99.5%
Hodgdon BL-C2<<locked>>82%40,727 psi86%2159 fps99.6%
Hodgdon H380<<locked>>88%40,625 psi86%2146 fps96.7%
Hodgdon H380<<locked>>88%41,307 psi88%2162 fps97%
Hodgdon H4895<<locked>>82%40,030 psi85%2123 fps98.7%
Hodgdon H4895<<locked>>82%40,814 psi87%2142 fps98.9%
Hodgdon Hybrid 100Vᴾ<<locked>>100%40,727 psi86%2172 fps98.7%
Hodgdon Hybrid 100Vᴾ<<locked>>100%41,466 psi88%2192 fps99%
Hodgdon LEVERevolution<<locked>>86%40,959 psi87%2188 fps99.2%
Hodgdon LEVERevolution<<locked>>86%41,843 psi89%2208 fps99.4%
Hodgdon TrailBossᴾ<<locked>>100%34,505 psi73%1348 fps100%
Hodgdon TrailBossᴾ<<locked>>100%34,708 psi74%1358 fps100%
Hodgdon VARGET<<locked>>84%41,292 psi88%2133 fps98.8%
Hodgdon VARGET<<locked>>84%42,018 psi89%2149 fps99%
IMR 3031<<locked>>84%41,771 psi89%2162 fps100%
IMR 3031<<locked>>82%39,784 psi84%2139 fps100%
IMR 4064<<locked>>86%40,422 psi86%2106 fps97.9%
IMR 4064<<locked>>86%40,944 psi87%2119 fps98.1%
IMR 4831ᴾ<<locked>>100%42,569 psi90%2218 fps97.8%
IMR 4831<<locked>>98%40,553 psi86%2195 fps97.5%
IMR 4895<<locked>>86%41,307 psi88%2172 fps98.6%
IMR 4895<<locked>>86%42,032 psi89%2188 fps98.8%
IMR 8208 XBR<<locked>>82%41,959 psi89%2126 fps99.4%
Lovex D073.6<<locked>>84%40,741 psi86%2142 fps99.9%
Lovex D073.6<<locked>>84%41,510 psi88%2159 fps100%
Lovex S060<<locked>>82%40,799 psi87%2070 fps98.4%
Lovex S060<<locked>>82%41,307 psi88%2087 fps98.6%
Lovex S062<<locked>>88%42,337 psi90%2146 fps99.5%
Lovex S062<<locked>>86%40,364 psi86%2123 fps99.3%
Lovex S065<<locked>>94%41,582 psi88%2136 fps95.9%
Lovex S065<<locked>>94%42,206 psi90%2152 fps96.2%
Norma 201<<locked>>84%41,510 psi88%2119 fps99.4%
Norma 201<<locked>>84%42,090 psi89%2136 fps99.5%
Norma 202<<locked>>84%41,597 psi88%2129 fps100%
Norma 202<<locked>>84%42,380 psi90%2146 fps100%
Norma 203B<<locked>>88%42,380 psi90%2182 fps98.8%
Norma 203B<<locked>>86%40,350 psi86%2156 fps98.5%
Norma URP<<locked>>98%41,945 psi89%2218 fps97.5%
Norma URP<<locked>>96%39,972 psi85%2192 fps97.1%
Ramshot Big Game<<locked>>88%42,090 psi89%2198 fps98.5%
Ramshot Big Game<<locked>>86%40,016 psi85%2169 fps98.2%
Ramshot TAC<<locked>>82%41,843 psi89%2126 fps96.2%
Ramshot TAC<<locked>>82%42,656 psi90%2149 fps96.5%
Ramshot Wild Boar<<locked>>82%40,886 psi87%2142 fps98.4%
Ramshot Wild Boar<<locked>>82%41,756 psi89%2165 fps98.6%
ReloadSwiss RS 14ᴾ<<locked>>100%34,751 psi74%1381 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%34,954 psi74%1391 fps100%
ReloadSwiss RS 52<<locked>>86%42,163 psi89%2231 fps98.3%
ReloadSwiss RS 52<<locked>>84%40,074 psi85%2205 fps98%
ReloadSwiss RS 60<<locked>>92%42,177 psi89%2264 fps100%
ReloadSwiss RS 60<<locked>>90%40,219 psi85%2238 fps100%
ReloadSwiss RS 62<<locked>>98%41,147 psi87%2231 fps97.1%
ReloadSwiss RS 62<<locked>>98%42,105 psi89%2254 fps97.5%
ReloadSwiss RS 70<<locked>>98%42,540 psi90%2247 fps96.5%
ReloadSwiss RS 70<<locked>>96%40,437 psi86%2218 fps96%
Rottweil R 901<<locked>>82%42,656 psi90%2113 fps100%
Rottweil R 902<<locked>>86%41,829 psi89%2119 fps99.4%
Rottweil R 902<<locked>>86%42,569 psi90%2136 fps99.5%
Rottweil R 903<<locked>>92%41,887 psi89%2175 fps99.1%
Rottweil R 903<<locked>>92%42,583 psi90%2195 fps99.3%
Shooters World Long Rifle<<locked>>94%41,582 psi88%2136 fps95.9%
Shooters World Long Rifle<<locked>>94%42,206 psi90%2152 fps96.2%
Shooters World Match Rifle<<locked>>84%40,741 psi86%2142 fps99.9%
Shooters World Match Rifle<<locked>>84%41,510 psi88%2159 fps100%
Shooters World Precision<<locked>>88%42,337 psi90%2146 fps99.5%
Shooters World Precision<<locked>>86%40,364 psi86%2123 fps99.3%
SNPE Vectan SP 11<<locked>>90%40,915 psi87%2185 fps98.4%
SNPE Vectan SP 11<<locked>>90%41,495 psi88%2201 fps98.6%
SNPE Vectan SP 7<<locked>>84%42,525 psi90%2146 fps97%
SNPE Vectan SP 7<<locked>>82%40,437 psi86%2119 fps96.6%
SNPE Vectan SP 9<<locked>>84%40,959 psi87%2136 fps98.4%
SNPE Vectan SP 9<<locked>>84%41,640 psi88%2152 fps98.6%
SNPE Vectan Tubal 3000<<locked>>82%40,973 psi87%2047 fps100%
SNPE Vectan Tubal 3000<<locked>>82%41,553 psi88%2064 fps100%
SNPE Vectan Tubal 5000<<locked>>88%40,437 psi86%2051 fps100%
SNPE Vectan Tubal 5000<<locked>>88%41,162 psi87%2067 fps100%
Somchem S335<<locked>>82%40,103 psi85%2047 fps100%
Somchem S335<<locked>>82%40,843 psi87%2067 fps100%
Somchem S341<<locked>>84%42,337 psi90%2149 fps98.6%
Somchem S341<<locked>>82%40,074 psi85%2119 fps98.2%
Somchem S355<<locked>>90%40,263 psi85%2139 fps98.7%
Somchem S355<<locked>>90%40,959 psi87%2156 fps98.9%
Somchem S365ᴾ<<locked>>100%39,552 psi84%2215 fps99.6%
Somchem S365ᴾ<<locked>>100%40,451 psi86%2238 fps99.7%
Vihtavuori N133<<locked>>82%41,118 psi87%2047 fps100%
Vihtavuori N133<<locked>>82%41,742 psi89%2060 fps100%
Vihtavuori N135<<locked>>86%40,843 psi87%2103 fps100%
Vihtavuori N135<<locked>>86%41,742 psi89%2119 fps100%
Vihtavuori N140<<locked>>86%42,134 psi89%2116 fps100%
Vihtavuori N140<<locked>>84%40,118 psi85%2093 fps100%
Vihtavuori N150<<locked>>92%41,234 psi87%2129 fps99.6%
Vihtavuori N150<<locked>>92%41,858 psi89%2146 fps99.7%
Vihtavuori N160<<locked>>96%41,466 psi88%2175 fps97.2%
Vihtavuori N160<<locked>>96%42,221 psi90%2195 fps97.5%
Vihtavuori N530<<locked>>82%41,974 psi89%2123 fps99.4%
Vihtavuori N540<<locked>>86%40,379 psi86%2110 fps100%
Vihtavuori N540<<locked>>86%41,017 psi87%2126 fps100%
Vihtavuori N550<<locked>>96%40,393 psi86%2178 fps96.8%
Vihtavuori N550<<locked>>96%41,133 psi87%2195 fps97.2%
Vihtavuori N555ᴾ<<locked>>100%33,475 psi71%2126 fps96.1%
Winchester 6.5 StaBALL<<locked>>96%42,163 psi89%2165 fps99%
Winchester 6.5 StaBALL<<locked>>94%40,118 psi85%2139 fps98.8%
Winchester 748<<locked>>82%40,814 psi87%2156 fps99.7%
Winchester 748<<locked>>82%41,582 psi88%2175 fps99.8%
Winchester StaBALL Match<<locked>>84%40,016 psi85%2136 fps98.7%
Winchester StaBALL Match<<locked>>84%40,901 psi87%2159 fps99%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>80%32,692 psi69%1985 fps100%
Accurate 2495<<locked>>80%33,330 psi71%2001 fps100%
Accurate 2520<<locked>>80%39,320 psi83%2110 fps99.9%
Accurate 4064<<locked>>80%30,951 psi66%1975 fps99.4%
Accurate 4064<<locked>>80%31,575 psi67%1991 fps99.5%
Accurate 4350<<locked>>92%33,359 psi71%2077 fps95.2%
Accurate 4350<<locked>>92%34,011 psi72%2096 fps95.6%
ADI AR 2206H<<locked>>80%37,391 psi79%2073 fps97.7%
ADI AR 2206H<<locked>>80%37,927 psi80%2090 fps97.9%
ADI AR 2208<<locked>>80%31,836 psi68%1952 fps95%
ADI AR 2208<<locked>>80%32,314 psi69%1969 fps95.4%
ADI Benchmark 8208<<locked>>80%39,479 psi84%2083 fps99%
Alliant AR-Comp<<locked>>80%38,479 psi82%2083 fps100%
Alliant AR-Comp<<locked>>80%39,218 psi83%2096 fps100%
Alliant Power Pro 2000-MR<<locked>>80%33,504 psi71%2077 fps95.1%
Alliant Power Pro 2000-MR<<locked>>80%34,098 psi72%2096 fps95.5%
Alliant Reloder- TS 15.5<<locked>>80%30,748 psi65%1969 fps96.7%
Alliant Reloder- TS 15.5<<locked>>80%31,285 psi66%1985 fps97%
Alliant Reloder-15<<locked>>80%33,272 psi71%2014 fps95.9%
Alliant Reloder-15<<locked>>80%33,808 psi72%2031 fps96.2%
Alliant Reloder-16<<locked>>92%35,070 psi74%2093 fps95.5%
Alliant Reloder-16<<locked>>90%33,576 psi71%2070 fps95%
Alliant Reloder-1755.9 gr84%30,385 psi64%2021 fps95.5%
Alliant Reloder-1755.9 gr84%30,864 psi65%2037 fps95.9%
Alliant Reloder-23<<locked>>98%29,907 psi63%2021 fps95.1%
Baschieri & Pellagri 107<<locked>>80%36,230 psi77%2070 fps96.2%
Baschieri & Pellagri 107<<locked>>80%36,869 psi78%2090 fps96.5%
Bofors RP3<<locked>>80%29,718 psi63%1962 fps96.5%
Bofors RP3<<locked>>80%30,414 psi65%1982 fps96.8%
Hodgdon BL-C2<<locked>>80%37,217 psi79%2096 fps99.1%
Hodgdon BL-C2<<locked>>80%37,927 psi80%2113 fps99.3%
Hodgdon H380<<locked>>84%35,476 psi75%2054 fps95.1%
Hodgdon H380<<locked>>84%36,143 psi77%2073 fps95.5%
Hodgdon H4895<<locked>>80%37,652 psi80%2083 fps98.2%
Hodgdon H4895<<locked>>80%38,174 psi81%2100 fps98.4%
Hodgdon Hybrid 100V<<locked>>90%29,834 psi63%1962 fps95.4%
Hodgdon Hybrid 100V<<locked>>90%30,356 psi64%1982 fps95.8%
Hodgdon LEVERevolution<<locked>>80%33,518 psi71%2054 fps97.6%
Hodgdon LEVERevolution<<locked>>80%34,171 psi72%2070 fps97.9%
Hodgdon TrailBoss<<locked>>80%25,570 psi54%1201 fps100%
Hodgdon TrailBoss<<locked>>80%25,672 psi54%1211 fps100%
Hodgdon VARGET<<locked>>80%36,289 psi77%2044 fps97.8%
Hodgdon VARGET<<locked>>80%36,999 psi78%2064 fps98.1%
IMR 3031<<locked>>80%36,564 psi78%2083 fps100%
IMR 3031<<locked>>80%37,246 psi79%2100 fps100%
IMR 4064<<locked>>80%33,344 psi71%1978 fps95.9%
IMR 4064<<locked>>80%33,866 psi72%1995 fps96.2%
IMR 4831<<locked>>94%34,838 psi74%2087 fps95.7%
IMR 4831<<locked>>92%33,460 psi71%2064 fps95.3%
IMR 4895<<locked>>80%34,055 psi72%2041 fps96.9%
IMR 4895<<locked>>80%34,577 psi73%2057 fps97.1%
IMR 8208 XBR<<locked>>80%39,479 psi84%2083 fps99%
Lovex D073.6<<locked>>80%35,447 psi75%2054 fps99.5%
Lovex D073.6<<locked>>80%36,201 psi77%2073 fps99.6%
Lovex S060<<locked>>80%38,218 psi81%2028 fps97.8%
Lovex S060<<locked>>80%38,740 psi82%2044 fps98%
Lovex S062<<locked>>80%32,837 psi70%1982 fps97.7%
Lovex S062<<locked>>80%33,373 psi71%1998 fps98%
Lovex S065<<locked>>92%38,957 psi83%2093 fps95.2%
Lovex S065<<locked>>92%39,755 psi84%2113 fps95.6%
Norma 201<<locked>>80%36,463 psi77%2037 fps98.6%
Norma 201<<locked>>80%37,057 psi79%2051 fps98.8%
Norma 202<<locked>>80%36,680 psi78%2051 fps99.8%
Norma 202<<locked>>80%37,246 psi79%2064 fps99.9%
Norma 203B<<locked>>80%32,677 psi69%2008 fps96.3%
Norma 203B<<locked>>80%33,199 psi70%2024 fps96.6%
Norma URP<<locked>>92%34,650 psi74%2087 fps95.3%
Norma URP<<locked>>92%35,201 psi75%2103 fps95.7%
Ramshot Big Game<<locked>>80%32,053 psi68%2011 fps95.7%
Ramshot Big Game<<locked>>80%32,634 psi69%2031 fps96.1%
Ramshot TAC<<locked>>80%39,262 psi83%2083 fps95.5%
Ramshot TAC<<locked>>80%39,856 psi85%2100 fps95.8%
Ramshot Wild Boar<<locked>>80%38,247 psi81%2100 fps97.8%
Ramshot Wild Boar<<locked>>80%38,928 psi83%2116 fps98.1%
ReloadSwiss RS 14<<locked>>80%25,701 psi55%1230 fps100%
ReloadSwiss RS 14<<locked>>80%25,802 psi55%1237 fps100%
ReloadSwiss RS 52<<locked>>80%34,229 psi73%2090 fps96.2%
ReloadSwiss RS 52<<locked>>80%34,940 psi74%2110 fps96.6%
ReloadSwiss RS 6053.2 gr80%28,297 psi60%1978 fps97.2%
ReloadSwiss RS 6053.2 gr80%28,819 psi61%1998 fps97.6%
ReloadSwiss RS 62<<locked>>94%35,984 psi76%2139 fps95.5%
ReloadSwiss RS 62<<locked>>92%34,330 psi73%2113 fps95%
ReloadSwiss RS 70<<locked>>96%39,842 psi85%2198 fps95.6%
ReloadSwiss RS 70<<locked>>94%37,898 psi80%2172 fps95%
Rottweil R 901<<locked>>80%40,103 psi85%2073 fps100%
Rottweil R 902<<locked>>80%34,679 psi74%1995 fps98.1%
Rottweil R 902<<locked>>80%35,244 psi75%2014 fps98.4%
Rottweil R 903<<locked>>80%28,094 psi60%1919 fps95.4%
Rottweil R 903<<locked>>80%28,601 psi61%1936 fps95.7%
Shooters World Long Rifle<<locked>>92%38,957 psi83%2093 fps95.2%
Shooters World Long Rifle<<locked>>92%39,755 psi84%2113 fps95.6%
Shooters World Match Rifle<<locked>>80%35,447 psi75%2054 fps99.5%
Shooters World Match Rifle<<locked>>80%36,201 psi77%2073 fps99.6%
Shooters World Precision<<locked>>80%32,837 psi70%1982 fps97.7%
Shooters World Precision<<locked>>80%33,373 psi71%1998 fps98%
SNPE Vectan SP 1153.7 gr82%31,444 psi67%2005 fps95.6%
SNPE Vectan SP 1152.4 gr80%30,023 psi64%1978 fps95.1%
SNPE Vectan SP 7<<locked>>80%36,970 psi78%2054 fps95.4%
SNPE Vectan SP 7<<locked>>80%37,637 psi80%2073 fps95.8%
SNPE Vectan SP 9<<locked>>80%35,897 psi76%2047 fps97.2%
SNPE Vectan SP 9<<locked>>80%36,579 psi78%2067 fps97.5%
SNPE Vectan Tubal 3000<<locked>>80%38,421 psi82%2008 fps99.9%
SNPE Vectan Tubal 3000<<locked>>80%39,015 psi83%2024 fps100%
SNPE Vectan Tubal 5000<<locked>>80%31,415 psi67%1903 fps99.7%
SNPE Vectan Tubal 5000<<locked>>80%31,966 psi68%1919 fps99.8%
Somchem S335<<locked>>80%37,724 psi80%2011 fps100%
Somchem S335<<locked>>80%38,290 psi81%2028 fps100%
Somchem S341<<locked>>80%36,883 psi78%2060 fps97.4%
Somchem S341<<locked>>80%37,550 psi80%2077 fps97.7%
Somchem S355<<locked>>80%29,254 psi62%1929 fps95.6%
Somchem S355<<locked>>80%29,747 psi63%1942 fps95.9%
Somchem S365<<locked>>88%27,035 psi57%1952 fps95.7%
Somchem S365<<locked>>86%25,788 psi55%1923 fps95.2%
Vihtavuori N133<<locked>>80%38,595 psi82%2008 fps100%
Vihtavuori N133<<locked>>80%39,218 psi83%2024 fps100%
Vihtavuori N135<<locked>>80%33,707 psi72%1991 fps100%
Vihtavuori N135<<locked>>80%34,374 psi73%2008 fps100%
Vihtavuori N140<<locked>>80%34,722 psi74%1998 fps99.8%
Vihtavuori N140<<locked>>80%35,244 psi75%2014 fps99.9%
Vihtavuori N150<<locked>>80%27,775 psi59%1880 fps96.5%
Vihtavuori N150<<locked>>80%28,253 psi60%1896 fps96.8%
Vihtavuori N160<<locked>>92%36,405 psi77%2087 fps95.8%
Vihtavuori N160<<locked>>90%34,795 psi74%2064 fps95.4%
Vihtavuori N530<<locked>>80%39,204 psi83%2080 fps99.1%
Vihtavuori N540<<locked>>80%33,199 psi70%1988 fps99.4%
Vihtavuori N540<<locked>>80%33,678 psi71%2005 fps99.5%
Vihtavuori N550<<locked>>92%35,375 psi75%2087 fps95.3%
Vihtavuori N550<<locked>>92%36,071 psi77%2106 fps95.7%
Vihtavuori N555<<locked>>98%31,328 psi66%2080 fps95.2%
Winchester 6.5 StaBALL<<locked>>86%30,414 psi65%1942 fps95.6%
Winchester 6.5 StaBALL<<locked>>84%28,950 psi61%1916 fps95%
Winchester 748<<locked>>80%38,130 psi81%2113 fps99.4%
Winchester 748<<locked>>80%38,885 psi82%2133 fps99.6%
Winchester StaBALL Match<<locked>>80%34,969 psi74%2051 fps97.6%
Winchester StaBALL Match<<locked>>80%35,636 psi76%2067 fps97.9%

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.

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This overview compares 135 powders for .375 Fl. Mag. N.E. loaded with the .375 | 320gr | CutEdge MTH. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,264 fps; across all powders the maximum-charge window runs from 1,348 fps to 2,264 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 135 of the 135 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (325 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 320.0 gr projectile in 0.375" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Hodgdon Hybrid 100V, Hodgdon Hybrid 100V 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 60, Alliant Reloder-17, SNPE Vectan SP 11 rank at the top here: for .375 Fl. Mag. N.E. with the .375 | 320gr | CutEdge MTH 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.

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