.30 M1 carbine brass
Quote from Reloader on March 9, 2008, 9:43 pmI am loading .30 carbine on the 550b. I am new to reloading. Have been reading and studying for years.
for the record:
I am using military LC new,never fired pulled and deprimed brass. pulled 110 FMJ. Pulldown powder WC820. CCI #41 primers.Question is about trimming. I notice that the brass measures about 1.286" +-.001" before sizing. After sizing is 1.294" which is now over the max. 1.290". Book trim length is 1.280"
Should I not resize the new brass the first time until I shoot it once? Or should I resize it all and trim to book trim length for uniformity? I didn't think straight walled cases would stretch much. I know the .30 carbine has a slight taper to it though.
TC
I am loading .30 carbine on the 550b. I am new to reloading. Have been reading and studying for years.
for the record:
I am using military LC new,never fired pulled and deprimed brass. pulled 110 FMJ. Pulldown powder WC820. CCI #41 primers.
Question is about trimming. I notice that the brass measures about 1.286" +-.001" before sizing. After sizing is 1.294" which is now over the max. 1.290". Book trim length is 1.280"
Should I not resize the new brass the first time until I shoot it once? Or should I resize it all and trim to book trim length for uniformity? I didn't think straight walled cases would stretch much. I know the .30 carbine has a slight taper to it though.
TC
Quote from Reloader on March 10, 2008, 5:22 pm30 Carbine cases actually stretch a fair amount, due to their tapered shape. Most carbines have enough play that new brass should work without sizing. Before loading thousands of them though, load a few and be sure the bullet is held tightly in the case after sizing but before crimping. If the bullet is loose, then resize the entire batch of brass.
30 Carbine cases actually stretch a fair amount, due to their tapered shape. Most carbines have enough play that new brass should work without sizing. Before loading thousands of them though, load a few and be sure the bullet is held tightly in the case after sizing but before crimping. If the bullet is loose, then resize the entire batch of brass.