Federal FliteControl is the best. Hornady has a Critical Defense load with "Versatite" wad and cup. It is licensed from Federal and is almost, but not quite the same as the FliteControl wad and cup. In side-by-side testing in my barrel it was as tight at 15 and 25 yards, but opened a bit more at 50. If you can find the Hornady load on sale for less, it is a reasonable alternative. It is 8 pellets of 00B, rather than the 9 in the FC load, so it was hard to fairly compare. The FC wad does carry down range farther, which may explain the slightly tighter groups.