I 've decided to take the plunge and buy a new Contender barrel. I currently have a 10" barrel in .22 Magnum which I love. I'd like to get something for hunting deer and elk, keeping in mind that my shooting limit is 100 yards. I'm considering the .357 Maximum, or the 30-30. So here are the questions, can I get away with 10" barrels, which I love, or must I go to the 12"or 14" barrels for either? What type of forearm does a 12" barrel use? And finally, do I need to go to something larger for my intended purposes? Thanks for all your help.