Welcome to the Forum no3! Sounds like Omaha Poke is using black powder in his shooter. BP demands a smaller bullet diamter. With smokeless, a 0.452 bullet is a good place to start. I've had good luck with both the Lee 405 and 500 grain bullet. After casting, I would lube the bullet and run it through the Lee 0.452 sizer, clean the lube off and go from there. I'm shooting a newer # 1 which means I don't have the leade like your #3. That big, stubby 500 grainer gave me some problems with chambering with the patch out to the ogive. You shouldn't have any trouble. As far as paper goes, I'm currently using college ruled paper (15 lb.) and don't resize after patching. Have used 20 lb., but had to size. I'm a lazy person and wanted to eliminate a step, so eventually went to a custom mould (0.452). By the way, I've even patched with cigarette paper and it worked like a charm. Would try some 9 lb if I could get it.