Home Forums Reloading Big Game Rifles Bushing selection

Thanks all.
Mathman,
My thought on measuring OD of fired cases is that it tells me (& tell me if I am wrong) the approximate dimension of the neck of the chamber.

Since I am gauging precision right now I am thinking it is best to keep next tension to the minimum required for the job at this point.
I also understand that it is best not to overwork the brass..

Am I correct in assuming that the 0.002 - 0.005 range in loaded commercial rounds is largely due to brass wall thickness variation? I measured five rounds out of each of
9 different boxes, by 5 different makers and 3 different weights. The measurements were consistent for any given box. Typically consistent between two boxes by a manufacturer except where one box had crimped necks (which were 0.002 smaller than the same manufacturers unscripted necks)

Thanks