Re: Steel Target
OK, although I did not design it for 1500 yards, it does work.
I got a set of 1/2 scale 3/8" AR500 silhouettes (chicken, pig, turkey, ram from arkcusmfg68.com) as well as round gongs that weigh the same. I welded the silhouettes to the top of a piece of 2x2 angle iron. It has a piece of 3/4" diameter pipe inside the angle. On the bottom, we welded the round gongs. The idea is that you hit the animal and the target pivots around the pipe (rod through it to the stands) and self rights. Only thng destroyable is the angle, if at all.
My lazy man's auto reset.
For your distance, full size rifle silhouettes would work.
Just an idea.