Ditto. Any 302 bar is going to work......and there is definately a 2 oz bar that works with powder bushings. Steel bars are different so keep that in mind. Check them out:
www.mecreloaders.com
As far as heavy shot is concerned, I would agree that a universal charge bar (adjustable) could be in order. But, remember, when dealing with MEC, you're dealing with an American company. You can call them: 1-800-797-4MEC; or email Tech Support at
[email protected] and get help with just about anything very easily.
MEC has always been very personable and knowledgable anytime I've needed help or parts!