+1 you will learn about rifle calibers and will be able to make your own decision based on what you learn. Asking that tyoe of question on a forum will only get you a zillion different biased opinions. I like magnums (but you don't really need magnums to kill deer) and you couldn't give me a 270 (not because it is not a good caliber but because I just don't like them) but many love the 270 and it has killed a lot of game. The 30-06 is probably the most popular and has the best over all bullet selection available of all the calibers. There are so many good calibers you need to learn about the animals you want to hunt first them make your decision based on that.