Shoulder Set Back and Neck Size

[TennJed]

Hi, I have fire formed brass that I do NOT want to full length resize, it's for a bolt gun that sits on a bench and shoots, hopefully 1 elongated hole in paper. Not worried about fast follow ups, hunting, etc. at this point.

I want to:
1. Be able to set the shoulder back 1 thousandth after firing
2. Resize the neck very precisely, I know about bushing dies and own one

I'm not concerned if this takes 2 operations, but 1 would be preferred.

What die(s) should I use?

I have seen replies that say use a full length resizing die to set the shoulder back but full length dies start at the base of the cartridge, not desired, what's the point of fire formed then?

I know PRS folks do this so any insight is greatly appreciated. Thank you!

 

[GLTaylor]

You are describing primarily neck sizing.
At some point your brass will become very tight at the base and closing the bolt/extraction will become difficult.

Sooner or later (6- maybe 10 firings), you'll have to size the body to get the bolt to close. Not sure how to avoid that?

I guess you could get a body die and have it honed out some?

 

[243winxb]

Custon die made from your fired brass or a Forster Bushing Bump Neck Die.
As said above, soon or later your going to fl size, so go custom.

 

[Rardoin]

Yep, custom fl die.

 

[TennJed]

Thank you all!