I own 4 S&W but nothing in 40, I do how ever own a Glock 22 in 40 S&W, which is hard on brass, because of the unsupported barrel issue, I know most all auto's have unsupported barrels, some much more than others, the Glock being the biggest offender. I needed the Redding G-RX die to even reload once fired 40 brass, and then I am careful to keep my re- loads of this brass to light loads and inspect the fired brass more carefully than most other brass. But for any of you that own a S&W in 40. Do you find the need of the G-RX die or the Lee Bulge buster die, necessary with brass fired in your S&W in this caliber ?