Bigbulls, where did you copy that. I am not disputing it, but never have I seen this as a possible reason. I have had 7400's took apart and never seen much of a dent. Most of the ones I have seen jam, have been cleaned poorly with way too much thick oil, or have just jammed straight out of the box, which kinda knocks down that idea of destroying itself.

Just curious on which forum you got that off of. I have well over 600 rounds thru this current 270 I have. Don't see any dents on the rails. Only thing I don't like is the changing POI. But with 53gr of IMR 4350, and 130gr sierra bullet, she shoots 1.5MOA all day.