Tula can be under powered and not cycle some guns. Had that happen with me and Tula before!
I stick with brass cased US made ammo in my .308 AR platform rifle! Only problems I have ever had is when using import ammo in my .308 AR.
Amen! Bolt is not coming 100% back for some reason and it is usually due to lack of pressure. I don't know if weapon has an adjustable gas system. If it did, I'd certainly look there. My AR 15s do not. I mostly shoot reloads and have only experienced cycling issues when working up loads. The bolt doesn't have to come completely back to eject empty brass but it must come completely back and past magazine in order to rechamber new round. I suspect crappy ammo too. I'd buy some Federal premium 165/8 in 308. If they fail, owner needs to send back rifle!
My M1A will shoot 150s and 168 Federals real good.