What’s wrong ? Chamber, brass, dies

[Klem]

Ok. Is there any thing a gunsmith would have to measure the chamber ?

Gunsmiths use Go/NO Go gauges however these do not account for the diameter of the chamber. Your longitudinal headspace will be accounted for by the gunsmith, but unless they shoot a few rounds or take a cast of the chamber this can happen.

The gunsmith can measure the diameter of the reamer but if the reamer or barrel is even a fraction loose, like a power drill, it will shave more than its diameter. New reamers tend to ream more than used reamers but we only know it's wide, not how.

Talk to them. My experience is that Dan Lilja's customer service is top shelf.