As the title says. I want to true up my Anderson upper receiver before installing my 20" KM Tactical barrel when it comes in this week. I've never had to true a receive when building 223 AR's but I've had issues with my Grendel while using a Bear Creek barrel that is currently on the receiver. There was no grouping to speak of. At 200 yards, it would barely stay on a sheet of 8.5"X 11" paper with hand loads or factory ammunition. I had one hand load with a 120 gr Sierra over PP Varmint. three rounds in a row had identical velocity and yet the bullets hit all over the paper. Most "grouping was in the 5"to 6" range at 200 and 2" to 3" at 100 yards. I replaced the scope and mounts, installed a nice drop in match trigger (Velocity) that's breaking under 3 lbs and accuracy is just not there. I've owned shotguns that "patterned" better than this Bear Creek barrel.
Is there a tool that I can use to true the receiver?
Is there a tool that I can use to true the receiver?
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