Fireball i am considering building a 20PPC and was wondering what your recomendations where i am wanting to shoot the 39gr Blitzking and the 40gr V-max and 40gr Berger . I am wanting to get a Pac-nor 3 groove barrel and was thinking that the 1n12 twist would be right, what do you think? And any more info you can give will be helpfull . 
