I remember reading about the phrase damned Yankee rifle you load on Sunday and fire all week, back during the Civil War Centennial in the 60s. Then, it was attributed to the far-more-widely issued Sharps 7 shot repeating carbine used by the Union cavalry.
Oops, memory fart - that was Spencer carbine!
In it he tells a story about his Regimental CO Col. Feilds (1st Tennessee) who is wealthy and carries a Henry rifle into battle. Col. Feilds saved many lives in that Regiment with that rifle. He ended up getting shot (sticking his head up above the breastwork ) in the head and Watkins thinks he is dead but he survived the war and he met him later in life.