I bought a S.A. 9mm R.O. (full size) late last year and can tell you it doesn't have the generous chamber most plastic semi-auto's have. My R.O. wouldn't fully chamber some reloads like the OP's, mine though ejected easily. Took the rounds home and every one of them failed to fully seat in my Dillion case gauge, usually with the rim slightly proud. Those rounds went to the range next trip and ran fine in a Glock 26. I ran 50 rounds through the R.O. that had passed the case gauge. No failures.
My fired 9mm brass, come to think of it, all my semi-auto comes from every range around here for 50 miles. I have no clue what fired it, how long it laid on the ground or how many times it was stepped on. I'm bound to get a out of shape piece of brass that won't size correctly every now and then.
If I'm shooting a match I run all the reloads I'm using through the case gauges. If I'm just plinking it becomes good practice clearing a jam.
Oh, I use a RCBS 3 die carbide set for all my pistol calibers.
Yes this S. A. 9mm RO Champion has the bull match grade barrel and yes the chamber is tight. I went ahead and got gauge and a under sizes re sizer along with 200 new Hornandy cases.