Originally Posted by JonM
Just back the die off a scootch and the important shoulder dimension isnt touched. Most older loading manuals describe how to do it. I got it out of one of my old speer manuals. It comes down to the fl die sizes the body a little doesnt reset the shoulder and sizes the neck. I get more uniform results when im using that method on fire formed brass than using just a neck sizer.
Still need to trim after sizing and check headspace. When i do this whether using a neck sizer or fl to neck size chambering can be difficult on some brass. Seems to be dependent on how many times the brass has been used between fl sizing and annealing.
I get kinda lax and sometimes mix up brass or lose track of firings.
Umh, that's funny. I get much better and much more consistant and accurate and foolproof results with a cartridge specific neck die than by partial sizing w/ a FL die. And NOT the collet type from Lee, but the actual neck sizing dies from RCBS, Redding, or Lyman. But, to each his own I suppose.