He was a house husband living just north of Plano Texas.  Married to a medical DR.  Had a shop in his garage where he made 310 tools, parts etc.  About ten years ago I left some original RB sporting model sights with him so he could copy them.  Have not heard from him since nor have I received my original sights.

That would be the same guy!

There were two iterations of this shop, the first went on for at least 15-20 years, IIRC, then he retired and sold it to this Randy person who initially expanded the operation and started reproducing hard to find parts and dies.  He seems to have folded his tent about the time of the Wu Flu epidemic, if not a bit earlier.  There is a fellow in Colorado(?) who posts on the Cast Boolit Forum (I know, they can’t spell!)  who goes by the screen name, Brass Magnet.  It’s a hobby for him, but you might be able to get some help there.  Otherwise we’re down to WTB and everybody’s favorite auction by the Bay. 
Froggie

Several years ago this fellow made a set of 310 dies in .25-20 SS for me.  Took awhile, but received and very high quality.  I have attempted to contact him couple of times since then, but without success.  Last time we spoke I got the feeling he was being overwhelmed by amount of time required to keep up with orders.