^ I would polish the lugs in the slide lightly with some 400 then shoe shine the lugs on the barrel lightly. Don't go to crazy. Don't want to decrease lug engagement in any way. Just smooth it outHas pistol been reliable with the 325 rds through it? If so, I wouldn't worry too much about it right now. Put a drop of lube on the barrel hood before shooting.
I would take a look inside the slide however at the lug grooves. They aren't rough or peened over in any way, are they?
LOl ! O.K. I'll just shoot until the darn thing quits.Easy fix! Remove barrel, polish barrel hood with Flitz until it is mirror bright. Polish 3 more times until you have used at least 1/2 of the tube. Make sure this is the new Flitz and not the old stuff. Once the hood looks like triple player chrome, carefully, very very carefully reassemble pistol so as to not scratch barrel hood and absolutely NEVER EVER cycle slide again! See ? Nothing to it! Don't be so anal ! I have a brother that absolutely drives me up a wall to the point where I avoid him at all costs because he is soooo OCD that he can't even function. If I seem a bit harsh now you know why.