A few thousandths of off the feed ramp should clear the failure to feed issue.
Without looking at the gun/magazine/load,there is no way I could make a blanket statement like this.
Not a blanket statement, it is an assessment of the problem as describe. I had the same issue with one of mine.
A true assessment of the problem can not be made without looking at the gun/magazine/loads. Removing metal off of the frame of the gun is not where you want to start.
I know this will go on forever. I have to leave to go somewhere. Others will chime in.