Originally Posted By: pyscodogI read some time ago that the majority of commercial AR barrels are supplied by Wilson.
I did shoot the rifles yesterday. I was at Atwoods and they had Hornady Black, 123 grain ELD-M for $23 a box. Thinking that was a pretty good price, I snagged a box. It shot horrible in my rifle for the ten rounds I put through it. I shot a few at 50yds and it wasn't bad but at 100 it was really high and being the brain child I am, I forgot the allen wrench to adjust my zero stop and I called it quits for the day. I stopped in a local shop on the way home and they said they had tried the Hornady Black in three different Grendels and had the same results, terrible groups. I can't pass judgement on the rifle with only 10 rounds through it but sure hope the next time out show better groups or I may be looking for a barrel a lot sooner than I had planned.
There is Wilson Arms (barrelmaker) and Wilson Combat (gunmaker).
It would take some research to try to find out what all the commercial AR makers are using for barrels.
Some would probably want to keep that secret.
Wilson Arms, E.R. Shaw and Green Mountain are likely suppliers to the commercial builders.
Before I condemned that barrel :
Make sure it's not fouled, have it scoped if necessary.
Make sure that your optic is not wonky.
Try "known good" ammo.