There is an 1800 yard range near Hotchkiss, Co. which is a favorite of long distance shooters. From their site:
“Friends of Billy Dixon Ultra Long Range Shooting Facility (FoBDSF, or simply, “the range”), located at the Stengel Gun Shop. This facility is situated five miles west of Hotchkiss, Colorado, adjacent to State Highway 92 (on the north side). This range offers targets and shooting positions for shots to 1800 yards — by any sporting-arms definition, 40 yards beyond one mile is long range.
In long distance shooting, mass of the bullet is everything. 500 grains is minumum and you can go up to 575 if you wish. Most of the BP long distance shooting is subsonic. Maybe 950 feet per second according to a friend of mine who does it frequently with a Sharps.
I think my Marlin 1895ss can handle up to 500 grains, it’s a carbine however, 18.5 barrel length,so not so long range, I would love to try a larger grain, had to get a vest because of the massive bruise I got after 20 rnds.