Beef shoots are competitions for choice cuts of meat from a steer. During the first round, all marksmen would shoot one round at their targets. The closest to the center of the piece of paper on the board was the winner, who got the first choice cut of beef. A second round was shot to determine the second choice , etc. until the steer was gone. The globe sight or hooded sight is a front sight made of very fine wire or pig bristle with a tiny ball at the top, shaded by being mounted in a cylinder aligned with the barrel, to keep sunlight off the front sight so that it can be seen more easily.
Achromatic lenses are a combination of lenses to limit color refraction in an optical piece.
Non-achromatic lenses have a halo of rainbow colors around the edges of the view field in the piece.