Is there a standard size for case neck thickness?I have two different lot #'s of winchester brass for a 7mmWSM.One batch measures .013"-.014",the other .015"-.016".I neck turned the first batch,and just cleaned them up to .013"(just scraping off the high spots).Before I turn down the other batch to .013",to match the first batch,I just wanted to make sure I am not making a mistake.Normally I only like to just cut about 70% off,but in this case I will most likely be cutting 100%.Is .013" a good size,even though they are currently .015-.016" now?