H. Onslow Curling, Hints on the Use and Handling of Firearms Generally…
“ The military revolver will kill at 300 yards, the Snider artillery carbine at 1800 yards, and the Martini-Henry rifle at 3000 yards. [B] Too much dependence upon the use of the slide of the back-sight for elevation in rifle practice should be deprecated for more than one reason: e.g., assuming that a man has been firing at 300 yards with his back-sight adjusted to that range, and he is suddenly ordered to advance at the double; if, at the spur of the moment, he neglects to reduce his sight, the result will follow that every shot will go over the enemy. ”
