All I shoot in .222 are 50-grain V-Max and 50-grain Ballistic Tip. For accuracy, I've had good luck with H322, H4198, and sometimes with X-Terminator (but it doesn't seem to be too consistent...could be the operator though). The best accuracy I've had so far is LT-32. There are probably at least a dozen powders that'll work great but I was just never ambitious enough to find out what they all are.
