Birthing problems

[mstarling]

Received the 16+" SS bbl with adjustable gas block today. Also received a cartridge gauge made at the same time.

Using a Redding Deluxe die set. The initial pass at the brass resulted in its being too long to the shoulder. I progressively worked it down until the top of the shell holder is bumping the bottom of the die. The brass is 1.366" long.

Does not seat fully in the cartridge gauge and the bolt will not close when attempting to chamber the case in the rifle.

Any ideas?