I have the opportunity to buy a 7mm TCU from a gentleman with the loading dies and everything. The only hang up is that he told me how he formed his cases. He took a loaded .223 shell, and shot it in the TCU barrel to fireform it.
Would the .224 diameter bullet bouncing along the .284 caliber bore cause damaging scratches or other harm? Am I just worring too much? I can get it at a great price is I was sure the bore isn't harmed.
He said hes shot around 50 rounds out of it and handloaded part of them, so I wouldn't think he shot over 25 .223's out of it. BTW: I can't examine the barrel myself
