Wind Gypsy maybe it's good I don't have a 6mm either if those are the bullets you mean. For reference we have shot a lot of stuff with a couple 308s and we get exits on pretty much any ethical shot and enough blood to find bears in thick brush. The pattern here with 223s seems to be less exits, less blood quick kills if the shot is good. The only thing "wrong" with our system is the 308 recoils a bit more than I'd prefer for kids and it's pricey to shoot.