Current Handloader magazine has an article on tose slugs- at least the Blueforce, I think or maybe it was the harder, hammerhead slugs with wads attached?. The author used Bluedot, 4756, Unique and Longshot as well.
I would be careful using such fast burners as Red Dot and Bullseye. I would much rather use slower burning powders.

In any event, it's a good article.