12-02-2018, 12:15 PM
03Bullseye Wrote:First Grendel build. Bear creek bbl. 16" m4 contour. Built for daughter. Just tested it. Hornady black eld-m factory. 8" left to right groups at 100 yd. leupold 1-4,hog hunter scope. Got home to clean it and scratch my head for answers. I noticed my Troy brake was very loose. Could that have caused my poor group?
maybe... I'd shoot with it off, then tighten it and shoot again... see if there's a difference. There was a definite difference in my buddies gun b/t bare muzzle and muzzle device.