I am in the process of putting together a pair of twin savage rifles. Both will be on RBLP savage target actions. I already have one action and two walnut mini tracker stocks. These will be prairie dog guns and only shot from a bench with a rest. Everything is decided except for caliber. I originally planned on doing a 17 fireball and 20 vartarg but recently have been thinking 20 and 22 ppc. I already have 17 fireball brass and enough 221 fireball brass for the vartarg but ppc brass is easy to come by and obviously of great quality. I have also thought about a 222 and 20-222. Again with these great lapua brass. I really like the idea of being able to by one type brass and necking down or up to accommodate both rifles. I really like the 17 fireball and have wanted a vartarg for a while but the ppcs sound like awesome rounds. I want something with great accuracy mild recoil and decent barrel life. I know I could do a switch barrel setup but have found that doing so while hunting to not work well for me so I am not looking to do so. Any comments or other ideas would be great and thanks in advance.