Welcome BigBear,

I use 102gr IMR 4831 in my 470. If you have an elephant hunt in April I'd be spending my range time with Woodleigh softs and solids in front of 85-87grs of R-15 with filler that should duplicate the Federal load. Many have reported problems with the Barnes products and other monolithic bullets, I don't really see a need to risk anything when the excellant Woodleighs are available.

You may contact RCBS directly if you are having trouble locating dies.