check out this article on the 45-70 tested at 2 miles range at the Sandy Hook proving grounds. Check it out @ the link below.
http://www.wahsatchdesperadoes.com/4...wo%20Miles.htm
An excerpt from the article .....
The Report of the Secretary of War, 1880, Volume III, under the chapter titled, "Extreme Ranges of Military Small Arms," had this to say:
"The firing was done by Mr. R.T Hare of Springfield Armory who has the enviable distinction, so far as is known, of being the only person in the world who has hit the 'Bull's-Eye' six feet in diameter at 2,500 yards with three different rifles, and who has ever fired at and hit so small a target as that described in this report at 3,200 yards.
In comparison with this, all other so-called 'long range firing' pales into insignificance. The gun was held under the arm, a muzzle rest only being used.