I purchased a Griffin & Howe-modified NRA Sporter with Lyman 48 rear sight and don't have a clue about how to operate the rear sight. I tried reading Crossman's "Book of the Springfield" and read his detailed description and ended up getting a headache and needing to lay down! I think I understand the windage adjustment but am totally lost on elevation, other than the mechanical act of doing so.
Anyone got a link or good source for information? As I know there are different models, a couple of pictures of my rear sight below. I tried sighting it in the other day at 100 yards and let's just say my results were rather "modest"!