Well I know its been asked about 3 million times or more. What is the best deer gun? Ive been reading and reading and reading about deer rifles, when I thought I have found a good caliber. I did research on the caliber. I am wondering what would be the best deer rifle for me?

I hunt the Catskill Mountains in New York. I hunt atleast everyday in the season. My shots are about 15 to about say about 400 yards away, and im a real good marksmen and know alot about guns so im wondering what the best gun would be for me?