Originally Posted By: tt35Are RCBS and Redding shell holders interchangable? My brother bought a Redding Boss press and I'm wondering if my RCBS shell holder will work.
That is a trick question. If you mean can they be both be used in a Redding Big Boss, then yes. But the numbers on the RCBS are not always the same number as is on the Redding...i.e: A Redding #1 is the same as the RCBS 3 & 11. A Redding 2 is the same as an RCBS 2. A Redding 3 is the same as an RCBS 1. Redding (and possibly RCBS) provide an Interchange Chart with any Shellholder you buy that has most of the shellholders comparisons/cross references for Redding, Hornady, RCBS & Lyman.
