Number 22 is hard to tell. that one looks like it could be natural. The others, as someone else has stated do look large, but to me, they look consistent to bullet holes with possible hollow points in use. These are probably very advanced cameras for crime scene photos, so really the sizing is hard to tell when there's not much near to give me a point of reference. The one picture all the way to the right, whatever caliber it was, did not have enough power to get through the tree. It looks like it stopped dead after the bark. In number 15, to me, that looks like a bullet hole and blood. As for the size, really he could have had hollow point bullets on him which expand when they hit the target. They are sold alongside regular bullets. MOO