Cycling 9mm several times to check oal and noticed that some will shorten by as much as .02 after 3 cycles.
Cause for concern or should I crimp a little more?
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Cycling 9mm several times to check oal and noticed that some will shorten by as much as .02 after 3 cycles.
Cause for concern or should I crimp a little more?
Cycling thru the chamber will cause setback
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Does it show any set back after the first cycle? That is all it will when it is fired.
Only sets back about .005 - .010 after one cycle
If it were me, I would add a little more crimp.
JTD
I agree, if it has setback after the first cycle, add a little more crimp.