Can you bring your own brass ammo

Yes, no steal

They have a website that answers those questions and there's also a phone number attached here where you can call them and they'll answer any and all questions faster than posting a question here.

For pistols, yes. For center fire rifles, no.

Yes

Erick Perez is right

Yes except for riffle rounds. They have to be FMJ. No hollow points, trace rounds etc.