I have noticed that I have problems with concentricity on ammo that has been fired in my AR's. I use a Hornady tool for checking which rotates the case on the head and the meplat. I do not have any problems with cases that are fired in bolt guns so I am guessing the heads are getting bent on extraction in my gas guns.
Opinions ? and does anyone know of a link to the Army study on accuracy with bent case heads Bart sometimes mentions?
Opinions ? and does anyone know of a link to the Army study on accuracy with bent case heads Bart sometimes mentions?