I guess I don't because everybody has one, I use 8x57, 8mm-06, 9x57,35 Whelen, 9.3x57, 9.3x62, 416 Ruger, 416 Rigby. I like guns that shoot heavy bullets, just me I guess. I live in the "Peoples republic of Minnesota", where nothing is allowed. Either 8mm gun I have swats deer loaded with 200gn bullets, it will probably do as well on most anything else. The other calibers I have are just toys for my shooting amusement. The 416 Ruger will put anything down if I need to ever do that.
BTW, I support all calibers and shooting and hunting, I am just answering the question.
Have a GREAT NEW YEAR one and all