I recently loaded a test batch of 15, 9mm, Win Brass, Win 124gr FMJ, Win 231 4.3gr, OAL 1.164. The longer length feeds better in my CZ.
I'm using the LEE Auto-Disk Powder Measure, Disk #40 and it weighs at 4.3 as advertised.
Load data listed this load At a shorter 1.09ish OAL & 1090fps.
At 1.164 mine chronod at 990fps as a 10 rd average Temp was about 70 degs.
With this OAL I want to get close to 1050fps to make a year round reliable 125 power factor. The next Lee auto-disk hole jumps (from this 4.3gr) to 4.6gr - hole #43.
I'm new to reloading with no experience. What kind of jump in speed would be reasonable to expect with a .3 gr increase. Is this too big of a correction to try???
I appreciate your help.
I'm using the LEE Auto-Disk Powder Measure, Disk #40 and it weighs at 4.3 as advertised.
Load data listed this load At a shorter 1.09ish OAL & 1090fps.
At 1.164 mine chronod at 990fps as a 10 rd average Temp was about 70 degs.
With this OAL I want to get close to 1050fps to make a year round reliable 125 power factor. The next Lee auto-disk hole jumps (from this 4.3gr) to 4.6gr - hole #43.
I'm new to reloading with no experience. What kind of jump in speed would be reasonable to expect with a .3 gr increase. Is this too big of a correction to try???
I appreciate your help.
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