Re: 1000+ near Missoula Montana?
Deep Creek on the west side of Missoula (take Mullan west to Kona Ranch Rd, follow signs)goes to 1000 yds, but one of you need to be a member ($35) to shoot past 100 yds. you can join on the spot.
Be aware, there's a clinic this Friday, and an NRA shoot Sat and Sun, suggest you go mid-week.