what a dumb question, well its not a dumb question, the dumb thing is that you already have your answer and sound pretty sure of yourself! you asked for our o then you become offended and say smart remarks in return , my o is that you were boored when you made this post , think about the q, before you ask next time, i myself start shooting in july and can bust knocks at 20 yards all day long i feel that 2 months practice is plenty