ghost, if you need to trim AI cases, that speaks more for the sizing process than the firing process. Think about it.

Squeeze a neck down further than you need to in a standard FL die, then force it back up with the expander ball dragging through the neck. THAT is how you stretch cases.

Last edited by RickF; 10/08/11.
Anybody who seriously concerns themselves with the adequacy of a Big 7mm for anything we hunt here short of brown bear, is a dufus. They are mostly making shidt up. Crunch! Nite-nite!

Stolen from an erudite CF member.