Federal is stepping up to the plate to compete with Remington Ultra Core- Lokts, Winchester Partition Gold's, and Hornady SST slugs. My H&R Ultra-Slug Hunter prefers the Remingtons right now, but I am definately going to have to give these a shot. Federal is going to use the Barnes Tipped Expander Bullets (which the 250grain is my favorite ML bullet) 385 grain, the bullet will be housed in the 2 3/4" shotgun hull, and will leave the muzzle at 1900fps..... Here's the sight check it out.
http://www.federalpremium.com/default.asp?pg=46
Hope this was useful info........