wish for 3 or 4 shot j frame in 50 caliber

[cotton]

just dreaming for the smallest revolver in a large caliber like a S&W j frame shooting a pure lead 50 caliber keith style bullet at about 800 fps going at 250 grains or id settle for same frame in 45 long colt or how about a beefed up north american arms mini revolver with a 3 shot cylinder shooting a 44 s&W .. might need a pair of gloves to shoot that last one ...