Neck turning vs neck reaming

[Wile E Coyote]

Thanks Kevin, As I mentioned earlier, as I bring my game up to par I've had to learn a few new proceedures; one being neck prep. I posted the question because of what I found when sorting through some new brass and discovered something completely unexpected. Recently, I was given a large quantity of reloading tools, and components including a lot of new, in the box brass. Right now I'm working with some .223.

While sorting it looking for cases that are naturally concentric before doing any work to them, I expected to find most to be within .013" to .014" wall thickness and many were just that. however, the range was wider than anticipated; some as wide as from .011 to .015" Out of 350 cases, only 14 were less than .001" out of being concentric. I did set these aside for now.

What I'm trying to figure out is, by turning the necks to a uniform measurement, discarding anything less than that #, will the neck sizing process straighten the cases out? or will the body die do this job? Or do I have a pile of marginal brass that can't be fixed? I would like to load some first rate cartridges on the first loading. I don't want to have to load and shoot to fireform the brass. To me this would be a huge waste of components plus too much wear and tear on the barrel.