Thanks for the replies fellas...I will answer all three of the last posts in order...
I am not using bushings. I really thought I could just use a fired case but the problem with the Ackley is that it doesn't headspace off a datum line like most rimless cartridges, it uses the junction between the neck and shoulder. So, when you cut the chamber you simply headspace the rifle to a go gauge minus .004" {actually one that has had .004" ground off the big end.} The problem this causes is that the fired case will press or "bump" or move in very easily at that spot when I close the stripped bolt. I am trying to get within .001"-.002" and closing the bolt feels about the same from .001"-.005"...those Sinclair bump gauges really are the answer but unfortunately they don't make the size I need since the Ackley headspaces on the shoulder/neck juncture...I will have to make the tool on my lathe. I have the Stoney Point set which are exactly the same thing, there just is no gauge piece that is the correct diameter for the Ackley. The good thing about all this is that I have the reamer to measure this size. Thanks again guys.