About 25-30 years ago when I got into 9mm reloading using my Dillon 550, I purchased the Dillon carbide die set and not long after that, I was notified by Dillon that I should request a new carbide resizing die to replace the original one. I forgot what the problem was, but the original die seemed to be OK and the rounds chambered and fired OK in both my DWM Luger and my P89 Ruger. I have always used the new die since, which also works fine.

I think the problem was that the original die sized the cases too small, and that the replacement die corrected that issue. I don't recall a taper issue.

Does anyone recall this recall/issue, and what the problem really was?

Thanks

Jack