You will need one of each, a 22LR, a 17HMR, either a 17. Rem or a 204 Ruger, a .223, a hot .22 (22.250,220,22-243), a .243, then a 300mag. And this is just for starters and doesn't include handguns. But if I had to start with or could only have 1, it would be a .223