Mas, A local seller has a used Smith 442 for sale in the low 300's including some ammo and a holster. This gun is supposed to have about 500 rounds through it. This is the no lock version and is about 3 years old. I know that a ton of variables go into my question, but, generally speaking, is this round count a concern on the 442? I could buy a new one for around $400 out the door. Is it just getting broken in, or would you call this well worn? I've never owned an Airweight, so I'm flying blind. Thank you, sir.