i cant agree more, my guns love to chew up under sized brass. especially good quality brass and even glock 9mm brass.(keep in mind i clean my guns when they are dirty, which is once every 2 months) the trick is to know the history of your brass after 6 times at the range i toss my brass. Ive got a "bad brass package" which is stuff ive collected, and has been used 20+ times and it still shoots fine. Just resize it oh and visually inspect it, tanfogs dont have any problems, its always down to ammo