Hello Baylian,
Lots of choices
.223
.22-250
.243
.25-06
FWIW
If I was in your position looking for a first varmint rifle caliber then hands down I would choose the
22-250 . If your looking for a caliber to also hunt deer with then I would choose the 25-06
For the rifle choice I'd suggest a Savage for its champagne accuracy when your on a beer budget
Peace
Talon
