Looking for a short shank bullet

[ole 5 hole group]

I really don't want to purchase a mold for a bullet that I will seldom shoot, so I hope someone here can be of assistance. I'm looking to purchase 100 bullets or so from someone who has a bullet mold that makes a .500 or .501 bullet with a nose length of .650 to .700 and a shank of around .3 with a meplat of 80% or higher and from 500 to 650 grains in weight. (Looking for a little more powder space) They will be shot out of a 500 S&W PC revolver (John Ross edition). Can anyone point me in the right direction?
Thanks
Joe