I appreciate the info gun fun. I know I am new to this but I did some homework, will do 1&3 before I start getting bore hole crazy. I have no problem wasting 2 3/4 ammo anyways since I think that is what I and this gun can do very well. I also had to order the puck to be 922r compliant, still will not until the brake gets shipped too. Being a realist is not bombtastic and I just hope 1 and 3 work, if not I will have to get the micrometer out. I like tinkering with things so this will definately be a fun adventure and will update the progress as I go.