For caliber I think .204 is a little small for yotes, I know some will disagree but I stick to the mainstay of the .223. It will always be around. As far as gun, can't beat a savage for a bolt action. Acturate as anything out there, great trigger fully adjustable, and inexpensive as it gets. Model is up to you, I shoot a bull barrel cause mine doubles as a praire dog gun, but a buddy has a standard that shoots just as good. Havn't seen one that won't do under a 1/2" at 100 yrds