Yes - .222 is a perfect deer ctg. as long as the right bullet is used, such as a 45 or 50gr. TSX or 60gr. Nosler Part. if it will shoot them.

I've a friend who thinks a .22-250 is THE perfect bear ctg. with 55gr. Speer Sp's at 3,700fps.

I, on the other hand, think the .222 and .22-250 are wolf & deer ctgs, with the .17CF's being primarily gopher and other field rat rifles. All other CF's are for moose, elk and etc.