I have 4 40 caliber guns. PPQ, Glock23, XDM and Remington 1911 R1. I was checking set back using the R1 and finding anywhere from .004 to .006 every time I would load the dummy round. I tried increasing the taper crimp to the point I was causing an indentation in the 165gr FMJFn while getting more a setback of .009. It appeared applying more crimp was not the answer.
I decided to load up a couple more dummies going back to the half turn on the Lee FCD for a taper crimp. I decided also to use my other 3 guns to see if any setback was happening. I ran each round 2 times each in all 3 guns with absolutely no setback. I then proceeded to try each round in the R1 and the first round caused a .004 and the second round setback .005. After this experiment it seems the R1 is partially the cause of the setback.
Can anybody offer any help to what may be causing the setback in the R1 and not my other guns.
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I decided to load up a couple more dummies going back to the half turn on the Lee FCD for a taper crimp. I decided also to use my other 3 guns to see if any setback was happening. I ran each round 2 times each in all 3 guns with absolutely no setback. I then proceeded to try each round in the R1 and the first round caused a .004 and the second round setback .005. After this experiment it seems the R1 is partially the cause of the setback.
Can anybody offer any help to what may be causing the setback in the R1 and not my other guns.
.