This is a great little article, only 2 pages. There is a 4-pager article, prettier but harder to print out. Comes up immediately on a search for title/author.
As about half of the forums on this board are post 1850, and the Dreyse Needle Gun was mass produced as an 1841 model, all subsequent wars begin to tip in the direction of suppression, assault, seize objective [or drive off the enemy].
Whether or not and how you model this important aspect of firepower in your games is up to you, of course.
But I submit to the group that any historical game must model this somehow to keep the claim of historical, and that it can be done in a fun, smart way that makes the final assault even more satisfying!
Hope it is informative.