I have 2 6BR's and am thinking of building a 22 I am mainly a varmint hunter, but I get really excited over tiny little groups. since there aren't a lot of varmints in my area I do a lot of paper punching. I am thinking of 22PPC or 22BR I shoot paper at 100-200 yards and varmints mostly 300 yards or less. some factors are #1 Accuracy #2 accuracy. I don't want to neck turn I prefer something that doesn't take enormous additional bras prep. I will be shooting Varmint bullets. Velocity is a consideration because I want splat factor. Is it true that a custom 223 will shoot as well as a PPC or a BR? also How do I go about specing out a chamber neck diameters,etc? any thoughts would be greatly appreciated. I will be building on a trued 700.