If it's not rusty and the cylinder spins when you pull the trigger, that's about all the checkout they need, at least the cheap ones. "Heavy" is a generous description of the trigger pull.
As for ammo, 7.62x38R is getting easier to find, but not any cheaper. You're going to hear a lot of opinions about this, but I have shot plenty of 32 smith and wesson long out of mine. The cases bulge and rip sometimes, but that's it. People use 32 magnum too, but I don't see the advantage to it. It's no cheaper than the right stuff and almost as hard to find.