Baring having done as UncleNick is speaking of, always and forever size bottle neck the minimum amount that will allow brass fired in YOUR chamber to again chamber in YOUR chamber after sizing.
Some of the companies directions are waaaaay off the mark if you want reasonable or good grass life.
The is no need to buy "neck sizing dies" in most cases if you just set up your full length dies to the needs of YOUR chamber.
If your doing as some instructions say, turning the sizing die to touch the shell holder at the top of the ram stroke and in some cases a 1/4 turn more so the ram "pops" over center at the top of the stroke, you are in almost all cases, OVER SIZING YOUR BRASS!
Crusty Deary Ol'Coot
Last edited by Crusty Deary Ol'Coot; April 6, 2013 at 12:13 PM.