If you're talking about defensive weapons (for relatively short range), I would think the AR-15 in 5.56 would be the perfect choice. Even FMJ XM193 packs a lot of energy and is amazingly destructive, especially within 50 yards or so. And excellent magazine capacity of 20 or 30 rounds. I have shot many jackrabbits with this, and have seen the damage inflicted first hand at ranges between 75 and 100 yards. I'm a believer.


-Jim