I've got the MiHec version of that mold. It's awesome. Does great in my Ruger Bisley, my old Knight BK92 in a sabot, and more fun that kicking a mean dog when paper patched and shot out of my #1 .45-70.
It was designed by Dave Scovill (I've got the "Handloader" where he discusses it's development).
It is the bullet that St. Elmer would have designed, had he not been given a weight limit that resulted in the 454424, that Lyman has spent the last few decades botching and butchering.
