All the new dies I buy are Forster full length benchrest dies because they greatly reduce neck runout
I bought the Forster expander and spindle assemblies for all my RCBS dies and the high mounted floating expanders greatly reduce neck runout.
The neck of the case is held and centered in the neck of the die when the expander enters the case neck. The unique Forster expander design prevents the expander from pulling the case neck off center and inducing neck runout.
Below on the left a .223 RCBS expander raised as high as it will go and on the right a replacement Forster expander and spindle assembly that fits my RCBS dies.
Below a modified Forster expander and spindle assembly for my Redding .243 full length die.
Reply With Quote