I'm wondering if other rounds are having this issue, but the next round is bumping it up somehow.
Seems this is my view.
That accompanied with a rough area on or near the ramp seems reasonable.
IF it is a warranty thing, best to send it back in case I am wrong, but it seems like it needs a good polish job.
Try locking the slide and hand feeding a snap cap. If hand feeding directly into the chamber is rough or too tight, there is your problem.