Diagnose my ammo problem...

[Zombie Steve]

Seems odd - there's no significant difference among web measurements between unfired, fired, and the problematic 4 fired rounds. Just the difference within the extractor groove. Thanks for everybody's input. I'll post whatever response Southwest Ammunition gives me.

Which supports my / others' idea that the round is underpressure, not over. A chrono really would help. You can use mine if you're in the neighborhood.

[Fentonite]

Thanks for the offer, Steve. I think it's just time for me to buy one!

[R&S]

you might check this out

http://www.google.com/url?sa=i&rct=j...79222160751886

[Fentonite]

I spoke with the guys at Southwest. They told me that they've heard from quite a few folks that their new load was showing pressure signs, and they are re-figuring the load. Sent me a shipping label to send back my ammo, and they will make it right. Thanks for all the advice.