Quick question for you experts. I just picked up a older used Rem 700 in a 243. When I picked it up today, the couple that I bought it from said that once they were using some ammo that a friend had "loaded up" for them. Upon chambering a round and closing the bolt the round went off. This was, according to them in mid 70's. The gun has not been used since. They said that they took it to a gunsmith who found nothing wrong with the gun.
My first thought was that the trigger was adjusted too light. It currently feels a little on the heavy side, and it is possible that the 'smith corrected the adjustment.
My second thought was the old "finger on the trigger when the bolt was closed" possibility. I will never know on this one.
I have closed the bolt (unloaded of course) and bumped, banged, thumped etc, and have not had the firing pin release. Is there anything else that I should check out?