Those .3595" bullets should have shot fairly decently, at least I think they should have at that size. For rifles, I like a bullet that has a bore riding nose if possible, and then if the action permits it, I seat the bullet to slightly engage the rifling. FWIW, I don't think you can do that with the RCBS bullet as it does not have a bore riding nose. Whether you can seat it out far enough for the full diameter leading edge can contact the throat or not is another question.
One bullet that might work is Lyman's #358430, a 200 gr. plain based round nose. The nose is bluff enough that it shouldn't be a problem in a lever action's magazine.
I currrently do not have any cast up so I can't send you a few to try. I might have a few of the RCBS 200 gr. bullets left, but I'd have to look. I've shot a few from a .358 in. but so far, the gun isn't taking to them. No leading but no accuracy, at least not yet.
One thing is for sure, it's getting too darn hot to cast bullets out in my shed. That's usually a winter time project and I've neglected my dutied in casting this past winter. My bad.
Paul B.
Paul B.