I've only killed one animal with them. I shoot 210g 308 out of a 300RUM at about 2900fps. at 125 yards it was DRT (Dead right there) like you cut it's legs off from underneath it. After skinning it out, I could stick my fist thrugh the ribs). I am a believer and this is all I will shoot. My buddy has shot deer and pigs with the same results. On one of his latest hunts he shot a deer with Barnes all copper bullets and it never expanded at all, the deer ran off without a blood trail for I think 50 yards before he started seeing blood. It was a well placed shot, just terrible bullets. I subscribe to their theory of dumping all of that energy into the animals cavity rather than punching right on through it. I'm not just saying this because I am a vendor for them, I sell other bullets as well...but for the long range abilities (and short range), at the price, that's all I shoot now.