Well, if you`ve never seen how hard a bird gets walloped by Nitros triplex load then I`d hold off on the doubts. I have yet to have a bird even flop around after getting hit with them. I took a guy out on his first turkey hunt last year and he used my gun and ammo. He shot a bird at just over 50 yards(not my choice, he miss judged the distance). That bird got hammered hard and clean. When I cleaned that bird a little itty bitty pellet went in it`s back and came out it`s breast! I highly doubt many lead number #4s could penetrate like that. And it`s not 110 pellets it`s 320 in a 10" circle at 40 yards.