That's great progress Dan! I'd vote for cast bullet experiments too. 8mm jacketed bullets seem kinda risky option for creating too much (disastrous!) case pressure. I think you've got it right about the cost of wild-catting, you'll throw a lot of money at a project that might be better spent on a new barrel (talk to CTW). If you keep your intentions on the learning it will all be well spent time and money.
