Just an update, finally had a chance to go out a pop a few rounds down range. It was raining some hard so accuracy was not high on my list, this was a function and brass check.

I fired 10 rounds of S&B 180 grain, checking the brass after each round for the 1st 5. Then final check of the last five after some "rapid fire"

I am happy to report that with no small amount of input and assistance from the board members here the Enfield performed flawlessly.

The brass shows a shiny area from the base of the Rim up for about 4.05mm consistently.

There appears to be some case expansion of around .05 mm in that area.

Firing pin strikes are slightly off center but consistent across all 10 cases.

Ejection was clean and flawless no stickiness, although it was a low round count.

All and all I am quite happy, I learned a lot about fitting and checking bolts on Enfields, and as I built one out spare bits a lot about how they go together.

Thanks to all those who contributed and supplied answers to my questions.