RE: 22 Cal To Shoot Deer
This seems to be a thread that has been discussed at length on these boards. Remember that 80% of the people on the board think that a deer has armor plating like a panzer tank and that anything less than their new 300 whizbanggroundpounding magnum will bounce off the deer's hide.
To answer your question, yes I would use a properly loaded 22 centerfire for deer.