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Discussion Starter · #1 · (Edited)
Here's what I got when I used Precision Bullets 125 gr FP and Bullseye Powder.

Crimp has no effect on speed ( or accuracy for that matter). The M was about 40 fps faster than my stock or my BarSto 4.25 bbl, both of which run very similarly. The XDM will not reliably feed 1.15 with a very loose crimp. The higher variances are normally due to a one round flyer, as hinted at by the max vs mean.
 
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