For cast bullets, I recommend you look at Veral Smith's firelapping kit. I've shot a lot swaged and cast bullets both in my Goldcup at matches and through my Springfield at school at Gunsite and in informal combat practice (dueling trees and etcetera), and I find this barrel smoothing procedure a simple and worthwhile way to reduce leading. If you aren't going to have any fitting work done on the gun (feed ramp re-radiusing and polishing in particular), you will likely want to stick with round nose or maybe truncated cone bullets. Hollowpoints and semi-wadcutters may not feed fully reliably. If you are going to shoot reduced loads, like 4 grains of Bullseye (or equivalent) or less, you might find you need to get a reduced-strength recoil spring; say, 14lb or even 12 lbs instead of the standard 16 lb spring.
Nick