"What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v
The expander balls will also give inconsistent readings on shoulder bump as explained it pulls on the neck. If you are on the ragged edge of headspace with your sizing, then you could get a tight one. If you are doing .003 on a semi, you should be fine.
I always lubed the inside neck but I would get some that "pulled" more than others.
GET IN YOUR BUBBLE!
"What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v
Thanks for the info guys. I think I was getting tripped up by the word mandrel? When I think of neck sizing, I think of Lee collet dies (which now I realize obviously they have a mandrel). I had stopped using them for my bolt gun ammo because chambering started to get tighter. Obviously FL sizing works the brass more but my accuracy was fine so I moved on. 11 firings in on Lapua 308 brass and I had a case separation. That has got me looking at neck sizing again. If you are neck sizing only for 223, do you keep brass separated by gun for semi auto or do you have no chambering issues with mix and match?
Yep. For clarification (anyone reading this who is getting confused), a standard sizing die will size the neck down a little too far and then the expander ball opens the neck back up on the upstroke. This is to make sure your neck is round for reloading. If you remove the expander ball, you need to open the neck up with a neck sizing die. Otherwise there's too much neck tension, and the jackets on your bullet start shaving off at bullet seating.
"What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v
"Air Force / Policeman / Fireman / Man of God / Friend of mine / R.I.P. Steve Lamy"
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