Thanks for the suggestions, I will follow up on them asap, and post what I learn here.
A couple of notes, the barrel is original, date stamps indicate Sept. 1918. The serial number indicates the receiver was made in October 1918.
Before firing I cleaned the bore and chamber.
The problem wasn't that the brass was stuck, it was the bolt itself. It rotated fine, but wouldn't draw back. As soon as it was tapped it would draw back and the brass extracted without any problems.
I was shooting Federal Power Shock 180 grain bullets. I saved all the brass, looking at them now I see very minor scratches on a few, the finish is bright from the rim up about 1/4 inch, then they aren't dull. I can find not signs of cracking, splitting or excessive widening of the throat.
The unfired primers aren't rounded a bit, but the primers on the fired brass are flat, like they were flattened against the bolt face.