A buddy of mine has a Ruger Redhawk chambered in .44 mag. He had purchased this gun off a fellow who had said it was at one point the most accurate high caliber pistol he had shot. Whenever he had bought the gun we tried working a couple loads through the gun at a relatively close range (10 yards). We could not find any loads that would shoot remotely good. We had a hard time even hitting a 10" by 10" target at ten yards. We were thinking maybe the possibility of the previous owner running to hot of loads through it cause frame stretching or maybe an issue with cylinder headspace. I'm not gunsmith but what are the options here is this something Ruger covers?? We filmed a short video of the gun when he had first purchased the gun I'm not sure if you would be able to get any idea of the issue from the video or not but here is a link: http://youtu.be/SKvY5w9rAMg

any help would be appreciated!