Mickey:
You simply won't beat the Brenneke, the best shotgun slug on the market (by a country mile!)

A 1-ounce slug at 1,475 fps.

Unfortunately, the ones sold at this site http://precisionreloading.com/slugs.htm are 3-inch hulls.

The ones here http://www.dnrws.com/rottweil.html may be 2 3/4, bit hard to tell.

Anyway, search out the Brenneke, you can't go wrong!