the ones most likely to be using 223's. If you are anything like good enough, you will ambush 20 for every one you have to actually FIGHT. If the odds are not heavily in your favor, it's a screwup on your part to be involved, at ALL. by the time I've sprung 20 silent .22 ambushes on guys, I'll have killed at least 30 men, and the odds are very high that at least 3 of them will be carrying 223's. If they weren't, I probably wouldn't have shot them in the first place.