ORIGINAL: statjunk
Hello guys,
I'm trying to understand the idea of neck sizing. Here is my interpertation of it. Correct me if I'm wrong.
You fire the cartridge in your gun so that the brass from the shoulder to the primer pocket fire forms itself to the shape of your chamber. Then you use a resizing die to only affect the mouth where the bullet is seated. Thereby decreasing the case stretch because you are resizing less of the case.
Question1: Can I just size the neck of my brass with a standard re-sizing die and if so how?
Question2:If I decide to start sizing cases this way should I wait till I'm shooting with a fresh batch of brass?
I know that the bullet may only be good for my rifle but that is ok by me.
Tom
You can partial full length any fireformed piece of brass. I don't recommend and won't recommend partial unless you have a shoulder gauge to see whats going on. I hear guys using candles and markers, but its always inconsisent. Mostly inconsistent due to the expander ball dragging back thru pulling the neck inconsistently.
If you really want to do this, spend a few bucks and get a collet die. Very cheap from Lee. RCBS neck sizers tend to cause runout over time.