I have 2 , 40 caliber pistols . A S&W MP compact and a Sig P226 . I use the LEE 401-170 TL mold and powder coat . I run them through the LEE push through sizing die after coating . I just swirl over a 100 bullets in a tub , dump over a screen to get rid of excess powder and dump in a pan lined with non stick aluminum foil and bake for 15 mins @ 400 degrees . I have had no problems chambering in either gun . They shoot accurately and barrel is clean . Regards Paul