jdillion, thanks- .250 just happens to be exactly what i came up with after measuring as you described as well as measuring a loaded case and than subtracting .002
Unclenick, thanks for the explanation. This particular gun is new with maybe 50 rounds shot. The only fired cases i have are once fired factory rounds. I think they would serve as a good starting point to take a measurement from. I do tend to load my handloads on the warm side so once i have a few fired from my handloads, i will take measurements again to see how they react as far as stretching.
As far as consistant sizing goes, if i size a case and still want to push the shoulder back more, am i better off to size an un-sized case after i make the die adjustment or will it work fine to use the same case that i just sized?