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Old June 6th, 2017, 12:41   #4
cetane
 
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Join Date: Jun 2010
Location: Markham & Stouffville - Ontario - Canada
I had an m4 that was pushing almost 400fps 0.20 with a m100 spring. Bearing guide & head, slightly under volumed so with 0.20's it joule creeped. Was like 330'ish with 0.25's
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