Using the CH4D dies I have found that the punches provided do not allow for you to recess the core. For example the 9mm dies I ordered the CH4D 30 caliber swage punch. As most of you who ever used these dies know the punches are not hardened. To replace one is about $25 Sooooo.....
I ordered a set of cast bullet sizing punches from Lee. They are a bit longer but they are hardened and make a great punch for setting a recessed core.
I will say this..for $2.50 each I can get 10-1.