i also learned i doubled the 470 pushed me back 3-4 steps but did dot kill me or damage my merkel.till yo get the hang of it put a live round in and a round with just a primer lets you know you f----- up but wont hurt you or your baby.he is right forget the bolt way learn the double use that last joint on that index finger.both did print a nice group though but i dont want to do that to many times again