I'm looking for illustrations and comment regarding the arc/angle effect on shooting. So far, I've not seen anything on the topic. Any ideas where I might look? This concept is about the angle and arc of the line of bore at rest and the line of bore at bullet exit produced by recoil. I want a better understanding, if an inconsistent position, making shot to shot recoil divergent, would produce either an angular error, or a wobble like error; and, what the magnitude of such error would be.