Hi Roscoe, you are 100% correct! I had a second set of Hornady dies sent and same results. Hornady thought there was a defect in the first set. What threw me off was that a full .450 nitro 1902 Webley falling block also would not chamber the rounds. That makes all 4 rifles with smaller chambers. I will contact RCBS after I make a few cerrosafe casts and see which chamber is the smallest. Need to order a die set for that chamber. I noticed CH 4D sells a .450 BPE die set, what do you think? Thanks again.
