I've carried the 2" NAA Black Widow for many years. I have a case of Speer Gold Dot and a bunch of other .22WMR ammo, so ammo availability isn't an issue. I also have .22WMR firearms with barrels of 1", 1.875", 4" and 10.5". The destructive potential really improves in the 4" and 10.5", but...