I'm looking to get into some long range big hunting(1000 yards max) and am needing some input on caliber choices. My long range experience is limited to varmint calibers, I've been to Montana and shot prairie dogs with a 22-250 and .243 out to 1000 yards. I just need a little help pointing me in the right direction. I will mainly be hunting deer sized game and maybe an elk if I get a chance.