30yd is pretty close. A revolver in anything 357 Mag or up, a semi in 10mm, 45 Super, or 460 Rowland, or a single shot in any of a long list of cartridges will do well. I'd worry more about legality in the states you hunt than anything else.
If you're into single action revolvers Rugers are very good. BFRs are a solid choice, and available in a wide range of cartridges. Nothing beats a Freedom Arms revolver, but you'll pay for it. I don't shoot DAs so I can't help there.
For single shots, CVA makes some good, inexpensive options. An SSK-50 is a good choice if you want a Contender. There's no need to go for something like an XP-100 for the short game.
As far as semis, pick your poison. Glocks and 1911s are the most common platforms. There's plenty of other options that'll work well too.