I just got a Ruger American in 243.I have brass that was fired in a different Ruger and FL sized.Not loaded or primed but has been trimmed.They chamber ok but the bolt has to be closed with some effort.Is this safe to use?Will the brass ,size itself to my new rifles chamber? Virgin brass chambers just fine

With the once fired brass and virgin brass being chambered something is taking a small chip out of the mouth of the brass.Should I send the rifle back or is it something a smith could easily fix?