I fired 3 of them them into a stack of wet computer paper, over 5" thick. All three penetrated, fully. I added more paper, and finally caught one. It mushroomed beautifully. A couple days later, I used them on 2 blackbirds and a one fat pigeon. Entrance wound was found on each of the birds chest. After feeling carfully with thin elastic gloves on, I could not see , nor feel any exit wounds. I don't understand this. I'm baffled! Could I still have missed the exits? Usually if you can find the entrance, the exits are even more noticable? By the way, all kills were within a yard of 35yrds. What do you shooters think?