I saw a post on here from 2007 in reference to the .404 BJ Express .411 Cal. bullet in front of the .375 H &H mag. case. I am trying to contact the man who has the rifle. I have the exact same rifle and am in New Mexico. I understand mine was built by Elmer Kieth. The RCBS dies I have for my rifle are original dies which were special ordered and are stamped .40 Cal. IMP. 1967. A very rare rifle I am told and it is possible Elmer Kieth built the only two in existents.