i get that in my 1911s, xdm's, berettas i use a lot of plated bullets and non plated bullets i got that on my lcp from using factory SD ammo too. doesnt affect accuracy or performance.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent