.22 = .22lr, .223, .22/250
.30 = .30 carbine, .308, 7.62x54, .303, 30.06, .300 mag, .300 blackout, .300 WSM
.38 = .38 spl, .357 mag, 9mm, .380
.45 = .45acp, 45/70, .45 colt
.50 = .50 Beowulf, .50 BMG, .50 GI
That covers a lot of territory, and I stayed with just 5 calibers.