the bullet is liquid teflon enclosed inside a metal jacket...at close range, on contact with flesh, the carnage is massive and nearly always lethal...but if you miss the slug will mostly splatter against the wall, it won't pass thru it to kill loved ones on the other side...
developed to deal with onboard skyjackers in the 1970's
- short range: pop a haulbag over their head, and dispatch with hammer. You should have some durable bags around, good for multiple uses, and this system also contains the splatter. For 2 meth heads at once, deploy the Snake Charmer. the sprinters: toss the special bolas, made with Fish hooks and funkness cables. Then saunter up and deploy the short range tactic to finish off. http://en.wikipedia.org/wiki/Bolas
mounted out on the periphery of your property...
could be hell on the coyotes and other small critters though...
pretty sure you can program that rig not to shoot holes in your house, get them before they get in alleviates the need for messy cleanup of the compound...
this will also work if they try to come in from the air...
Step up Russ, don't be a wuss and come at them mano e mano brah! You don't need to go shootin on people, use yer wits and if needed, fists. Thats what I did last go round I caught some jackwad trying to climb in my house window. 3am, in nothing but my skimpies ....
...talkin to the policewoman afterwards...nearly buck assed naked....3am near naked outside in teh cool night air after the post confrontation adrenaline rush: shrinkage comes to mind....humorous to me given the arsenal I'd left back inside my home.
However on the advice part, I'd personally go with a 12 ga if I could only have a single weapon. It would be a Mossberg Mariner 590. 2nd choice the 870 Marine Magnum.They typically come with full stocks but you can put the pistol grip on it. Shooting it in that configuration will work your manliness and ain't for the limp wristed. It's for personal defense only, and no joy to practice on it. Here's my son holding the short config 870 Remington. They go for under $300 I think.
Marine magnum version I'd rather have.
If I added a pistol it would be a .45 Sig Sauer P220 in stainless. They make a couple models, the Sport N being a larger, but sweeter shooter. If you go down this road, get a nice safe with an electronic lock (fast access) to keep your stuff in. Or some good hiding spots like this clock below.