OK, first off, energy does not matter nearly as much as bullet type and weight. With a little .22 caliber, or anything to be used on big game for that matter, bullet choice is vital. I don't really feel like discussing what I think would be good, partly because I wouldn't use a .223 for deer. Furthermore, there are already plenty of people on here giving suggestions for bullets. I will say that I would go "tough" with your bullet choice, which alleviates most hollow-points.