Defective barrel - TRYBE Defense AR-15 Barrel, .300 AAC Blackout

I have built several ar-15 firearms and one .300blk sbr b4 this one. I used this barrel to build a side charger upper. Assembled all components and chambered a round. Fired 1 shot and next round hung up in chamber. Had to disassemble gun and hammer bolt handle to extract cartridge. Trued different cartridge. Same thing, would not chamber. Got my other .300 out and tried same ammo. Functioned ok. Got bore light out and compared both chambers. Didn't see difference. Wrote to trybe and explained problem. They said to take to qualified gun smith. They used a tiny bore scope so they could see in chamber. They didn't see any problem. I tried to find different ammo to try. No luck as there is an ammo shortage. So I rented some go/no go gages and a chamber finishing reamer to assess problem and fix if possible. Trybe, shame on you. I expect to buy quality gun products. Not something that had to be worked on after 1 shot. In there defense, they said ship it back to them if no problems r found. I'm ready to shoot, not wait.