I agree dave! to the OP swerdk, dont sweat about accuracy, get on and make what you want to make, and if you find you cannot make something because the chuck is not accurate enough, buy a better chuck! Seriously, I had a 3 jaw lathe chuck that was .017 out, but it was the only three jaw I had to fit that lathe (L0 taper) You could dial it in to about .007 with a bit of messing and tapping, but it made everything I made on the lathe, and it all worked and was good enough! When a new chuck came along with about .003 to 004 runout I bought it, it is more repeatable, does not require so much messing with, but I don't make any more or any less components now with the new chuck than I did with the old innacurate one, are you getting my drift? all three jaw self centering chucks have run out, the most accurate chuck you have is a 4 jaw! You can expect better than 004" concentricity with a Rohm or an Albrecht type chuck, but you will not get .000" unless you are phenominally lucky, engineers work to tolerances, not dead on sizes!
Phil