I can't recommend the Hornady dies that I purchased very recently. They wouldn't size the case down small enough to have any grip on the bullet. I returned them, bought the RCBS and Redding Profile Crimp die and the problem was solved.
Gary,
Were the Hornady dies you spoke about above .475 caliber? I just discovered I have the same problem with my Hornady .475 dies. So far I haven't been impressed with the accuracy of my FA .475 LB and now I think that I know why. I have shot 400 grain cast exclusively up to this point. I wasn't impressed with the accuracy of these bullets, so I called FA and asked them what they shot in my gun to produce the test target that was sent with it. The gentlemen that I spoke to informed me that the gun was tested with 400 gr. factory Hornady ammunition and that 25 grs of H110/400 grain XTP should closely replicate the load.
After sizing my brass with my Hornady dies, the 400 grain XTP just slides in and out of the cases with ZERO resistance.
Got to call Hornady on Monday...