The range I know of that doesn't allow cast bullets is an indoor range, and the smoke generated is too annoying, so they banned them.
Why doesn't he load, or find a load that uses the plated bullets, like Berrys?
They are essentially a soft lead bullet with a very thin copper plating on them. This means they don't smoke like cast lead/lubed bullets, and the loads you use for them are the same loads used for plain old cast bullets.
Or, the powder coated bullets... same thing applies to them, as well.