I haven't shot my reloads at the longer range yet. The 300yd target was shot with Hornady factory, where the 150yd target was shot with reloads. I am however looking forward to a 300yd session with the reloads.

Please post the 300 yard groups with those reloads whenever it happens.

I've shot my spaghetti Sharps at 300 yards at a 18" gong, and once the vernier long range sight is adjusted dead on for that range, all that's left is to dope the wind. My all time best on that 18" gong at an exact 300 yards is about 7-8 hits out of 10. It is possible and I DO have pics that can easily be signed by a bunch of witnesses if needed.

http://postimg.org/image/k6o96eat3/ Well I bought the .450 B.M. after deer season last year. I finally got to break it in the bush this season with this little fast 6 point, I love it for a deer drive, quick, light, thick cover gun. I'm glad you talked me into it d80hunter :) My 13 year old daughter has claimed it for her gun, I might have to get another lol.

Another option coming soon Ruger American 450 BM. Randy's gun shop in Bad Ax Mi. has talked Ruger into building them. He has already sold at least 1000. There is a waiting list.
He has a YouTube video shooting 100, 200, 300 yards.
Very impressive. Not sure how to post the link.

http://michiganoutofdoorstv.com/shows.cfm?VideoID=431