Well, I'm in the minority here, possibly...But I'm a firm believer in "more power"...Have a few boxes of Sellier & Beloit 3" Magnum 00 buck, 15 pellets per load...Kinda punishing to shoot, but unscientific testing shows it'll stop a fight RIGHT NOW! In fact, outa my 20" Mossberg "Special Purpose" the muzzle blast is probably lethal, out to a few feet! Some say not good for short range, as pellets clumped together, but outa my gun, at 30-40 feet, I get pretty decent spread (maybe 12-18")...availble@ cheaperthandirt.com, cheap too....