I have some 12 ga Vitt slugs in pristine condition that I would like to load. Vitt originally loaded with Herco, Red Dot, Unique, and several varieties of Alcan powder. I had data decades ago that included Blue Dot, but can't find it.
Any one have any other data?

I forgot to mention that Vitt's data is for paper shells.

Found usable data- ABCs of Reloading, 6th edition (1997), page 163