Remington 742 semi auto "loose firing pin"

[Darrellr]

I have an old Remington Model 742 semi auto rifle. I've noticed that when chambering a cartridge, the firing pin is leaving a slight dimple on the center of the cartridge even when it is not fired. If fired, the next cartridge loaded has the same dimple. I keep expecting it to fire upon chambering a cartridge or to double fire. Does anyone have any ideas on what's causing this or how to repair it? Any suggestions would be greatly appreciated.

[gunnut69]

Could be a broken firing pin or a bur on the pin or in it's well in the bolt.  Most likely and weak firing pin return spring.  Also I had one in one day that didn't have a return spring!!!!  Guess I wasn't the first to work on that one.  It was dimpling pretty badly!!   Should not be happening!  Good luck from the gunnut69