jct61765
NES Member
Remember, the L.E. Wilson case gauge is not used for measuring case diameters precisely. It is for measuring the datum to establish the correct shoulder position for reloaded brass in your specific rifle.
I made this mistake with some neck-sized brass used in a former bolt gun. The reloaded rounds dropped into the case gauge, as advertised, but bound up solid in an autoloader. The shoulder area diameter was oversized and the round wedged into the AR chamber. The Wilson gauge does not measure case diameters to SAAMI specs.
View: https://www.youtube.com/watch?v=RuJYpm-qplQ
Better than having to resize loaded ammo.