I use commercially cast 200 grain SWCs. These are fine even for precision shooting. Brand doesn't seem to matter, but one often sees these called H&G 68 design bullets, after the H&G 68 bullet mould. I've tried the 185 grainers and they're fine too, but the 200 grainers cut a nicer hole.
I have also used swaged 200 grain bullets and they were fine, but the company that made them went out of business.
I didn't have to have the feed ramp worked on, but I got a decent gun to start with. Most of the better guns today won't have a problem with them. Some of the bargain variety guns will.
You can also get 230 grain cast bullets similar to the 230 grain ball bullet. I haven't tried them. But they seem to be the most likely to work in a gun that otherwise might need the ramp adjusted.