JP: Sigh. Here we go again. You and your favorite 5.56mm. You might mention the over-penetration problem with rifle rounds that travel at 3,000+ feet per second.
JC: I don’t keep loaded guns in my house, but if you want a firearm that will get someone’s attention (even unloaded), go down to your local Big 5 or gun store and purchase a Mossberg 500 or Remington 870 Police. Fairly inexpensive, and nothing gets someone’s attention like a 12ga. pump-gun. I’d imagine that your problem will decide to go elsewhere if he knows you have the capability of spreading his midsection across your lawn.