I have a Kahr CW 45, I believe my manual says to fire 200 rds thru it for brake in, I have shoot maybe 100 factory loads in it and 100 of my reloads in it without any problems, still if I had a new gun made by anyone I would want to shoot it some before I would trust it for defense, I am just now thinking about using it for my carry weapon as I have my concealed carry licence here in Okla. I will put a couple hundred factory HP's thru it before I would trust it with my life, if I have a problem with it I will send it back to factory for repair or replacement, for now I will carry my Glock 9mm and my 32acp Guardian for normal day t day carry, Don A Okla.