4 different BCA complete uppers. 3 had short throats, but would shoot handloads into 2-3" groups. They were replaced under warranty. Final BCA was correct throat, but would not do better than 5-7" with handloads and Hornady Black ELDM's. Finally just returned it for a refund. Only way I would have one of their uppers now was if they called me up and gave me one for free. That way I would not feel bad selling it for scrap if it did not turn out any better than before.
Had a Hardened Arms upper that would do 1/4-1/2 MOA with handloads.
Ended up getting rid of the HA upper because it was just not my cup of tea for a deer hunting rifle; got a Ruger Predator Grendel instead. Still working on finalizing my handload for it, but looking like 1/4 MOA or less will be the final result.
Had a Hardened Arms upper that would do 1/4-1/2 MOA with handloads.
Ended up getting rid of the HA upper because it was just not my cup of tea for a deer hunting rifle; got a Ruger Predator Grendel instead. Still working on finalizing my handload for it, but looking like 1/4 MOA or less will be the final result.