I had a Ruger #1, 7mm STW, Swarovski scope, that thing could hit targets at 1000 easily but I needed a table and bipod at that distance, and usually 2 or 3 rounds to dial in the windage. Longest kill shot was only about 550-600 tho.
My LUCKIEST long range shot was about 475 with a 303 Enfield, deer right thru the heart, probably near 24+ inch drop with a 180gr.
In the Militia we practiced at 1000 quite often but we didnt have to pay for the ammo, I think a person would need very deep pockets to build and practice with a rifle to go hunting at such distances, I dont doubt it can be done but its not for me.