I got a new box of Lapua brass. Here is the breakdown on neck wall thickness dims only: <0.001 (measured less than 0.015 and more than 0.014) - 33 0.001 (measured 0.015 - 0.014) - 22 >0.001 - 0.002 - 43 >0.002 - 2 So the question: I have separated out those that are less than 0.001 neck wall variance from those that are right at 0.001, but is there really any difference between the two? I will be using them for hunting and steel, 600 - 900 yards. No benchrest stuff, but would like to squeeze out everything I can from my setup. Other question: would even be worth turning the neck on that first group? I usually turn my Lapua brass down to 0.014, but with that group, I dunno if my efforts would actually hurt more than help. Any experience/advice about this would be greatly appreciated. Thanks.