I've had that happen on 2 Remingtons, a .223 and a .300 win mag. Eh, with as many rifles as I've been through that's a decent track record. They all should be perfect but as long as they're built on machines built by mortal humans, [bleep] is going to happen once in a while. As you say, a hand turned reamer fixed it both times.

Anyone who thinks there's two sides to everything hasn't met a M�bius strip.

Here be dragons ...