Everybody has a favorite caliber for deer, for whatever reasons. I have a Remington 700 in 7-08 which is without a doubt a perfect deer caliber. Several years ago, I bought a 45-70 and it's my favorite. I now own 3 45-70's and a 38-55. My point is, I have found that I like big, slow moving bullets. I like the way they kill, and they suit my hunting conditions. Use what you like if it kills good. Be honest, if it doesn't work out, use something else.