I have been talking with Bob a little bit about a design he has in .457.I use his design in almost every cal I own except the .457 and hope to change that.With the Texan and TX2 valve Ive found that the 315 gr -400 gr I get the best accuracy and performance.Part of that is due to the 1:20 twist Lw barrel.I wanted to start a post to see if there is any interest in the design.Its a 377 gr/350 gr HPBT.Any feed back would be great and also interest in purchasing one of these molds if they do hit production would be appreciated.I will try to get the bullet dimensions up soon as possible