250 Meter Shot With 10mm Glock 20 Posted July 9, 2015 in Guns & Gear, Pistols by Nicholas C with 20 CommentsTags: glock 20, Larry Vickers Larry Vickers takes out his Glock 20 and does a walk back drill. Starting at 50 meters, he shoots a full sized MGM torso steel target. He walks back in increments of 50 meters. He manages a hit in three rounds as far back as 250 meters.