Took it apart this weekend and clean the damn thing like crazy. Now the first round will not feed at all... it pinching the top of the shell.
What kind of stock did you put it in? When I installed a Houge overmolded stock the Ruger factor mag would not seat properly and it woul.d not feed the first round. Also the mag would not drop free. I sandpapered the sides of the mag until it would drop free and it also allowed the mag to seat deeper into the receiver and no more feeding probllems. YMMV