Yes go to www.mountainmolds.com

He made a 500gn mold for my 470NE that works great. I shoot water dropped wheel weights and don't have any problems.

Lee makes some 50 cal molds. I have one that I've sent some bullets to a guy who shoots them in his 500NE and says he gets good results. I cast his out of a linotype mixture, but the wheel weights filled out the mold better. It's a plain base bullet though. I think that mountianmolds has some links to different gascheck suppliers also.