During the Rev. War there were some one inch diameter rifles built to shoot at the British ships in the harbor...believe it was in New York...they had them mounted on a swivel...Also a story about Gen Hanger (British) and Banester Tarlton being shot at by a rifleman at 400 yards...The ball went between them (dang shame it didn't hit Tarlton 3 inches above the groin)...and hit the orderly's horse...killed it...From 400 yards mind you...With a lowly round ball...