measuring bullet runout

[alf]

JR,

My thought is to blow them out straight before turning. My or may not make a difference. Plus, I don't waste componants, as I'm shooting dogs at the same time.

That, and it eliminates the problems of the false shoulder to get a crush fit for fireforming in a tight neck. Meaning, on a tight neck if you wanna turn first, you need to just turn to where the new neck/shoulder junction is going to be. Is that enough to hold the case during FF? Or, do you turn just past that point, neck up to 25, then size back down to set the crush fit?

Back to that cat skinning thing again.......

 

[JRinCo]

My thought is to first turn the neck lower than where the junction is going to be by about .010 Then I'll neck up with a .255 mandrel and then size it back down to a 6mm and create a false shoulder.

 

[alf]

Sure, that'll work.

Same destination, different route.

Goes back to a couple of my earlier points. I knew I was going to have two barrels chambered this fall/winter. I prepped 200 cases and blew them out on dogs. Two for one, if you will.

Again, fireforming in a no-turn, does it blow them out straight before the rest of the case prep? I didn't measure before or after. Certainly can't hurt. Economics, again, a bonus.

 

[JRinCo]

Thanks for the info.
JR