What about those Black Magic slugs by Brenneke. Is this what's been talked about?
I don't think the OP specified.
As I noted before, there's all kinds of Brennekes. The Black Magic mag weighs 1 3/8oz and has 3000 ft lbs of energy it's usable in all barrel types. The Magnum Crush weighs 1 1/2 oz and has 3800 ft lbs. It's for rifled bores. There are non-toxic slugs, sabots, and more.
The best choice would be determined by your chamber and barrel type, but any of the classic Brenneke types should outperform Fosters and in most cases, buckshot. I would feel pretty secure toting a 3" A5 Buck Special stoked with Black Magics.
