Ok here we go again under the subject of FTF and FTE.
Images and concepts just pop into my mind, so I hope I can explain THIS thought.
It's basically along the lines of break in. We have all seen the tiny shavings in our R9's from the gun "setteling in" or breaking in so to speak.
If you think about it; this is a grinding force, much more friction than normal. This is why it is SO VERY IMPORTANT for a new gun to be very well lubricated and held with a more than EXTRA firm grip than usual during break in.
Picture the slide while it is grinding or shaving metal. It is "skipping" or trying to put the brakes on. This is naturally going to cause a FTF(feed) or FTE unless held extra firm. And sometimes the grip just won't matter if the "bite" in the metal is too harsh.
So I say, during break-in, don't get bent, if there are a FEW problems (Assuming recommended ammo is used). However, if after 150-200 rounds, they continue, then lets investigate the problem. However, if problematic, that's a different story.
Any Thoughts ?