Mark, the last time I went hunting in Colorado I killed an Elk at 760 yards. One shot, piled up in a heap. It did not run. It did not walk. It did not move. I got off the plane and shot one shot at 400 yards prior to that hunt. That one shot verified that the scope had not been damaged in flight and that the altitude and temperature correction I had made in the dope sheet was correct.
If you understand the principles of shooting and ballistics, you do not have to re-learn it for every rifle you shoot.
Mark, I shall lose sleep at night knowing I am un-worhty to enter your elk camp.