Many moons ago I bought a drilling at a gun show and the previous owner had a long series of notes about every shot he had taken with it.
Included were pages of scrawled calculations... well, lists of muzzle energy combinations between the rifle with various bullets (8x57JR) and the two 16 gauge barrels, (different shot sizes versus slugs versus buck shot, etc) as well as other calculations for the use of the .22lr insert for a shotgun barrel!
I just realized I might have bought Coyote Hunter's drilling!
