12-01-2018, 11:22 AM
03Bullseye Wrote:I just built a Grendel using a bca 16" m4 contour barrel. This is for my daughters Christmas. I test fired today and can't get better than about 5" @ 100yds. This is using factory horn add black eld-m. Granted, I'm using a leupold 1-4 with hog reticle, but I'm still able to bag it and get a good rest. I've only shot 15 rounds and wonder if it needs more break in. I've just scrubbed with job bore paste and kroil. My gunsmith told me to tear it all down and retorque bbl to 30#. Previously I had 45#. I don't know how that would change the grouping but I've done it. Not gone back to shoot yet. Any advice appreciated.
You can't make a silk purse out of a sow's ear.
What is your definition of accuracy? By that I mean what size groups do you expect out of your AR barrels?