You should bring lots of varmint rifles with you to allow your guns to cool. The 22.250 is the king of varmint rifles and much more of an accurate round then the .220 swift or.221 fireball. The .204 is another very flat, accurate round. The 22.250 is way flatter then a .223. I own both and hunt with both. All my varmint rifles are bull bbls and I wouldn't go pdog hunting with a sporter bbl.