I second the recommendation about the .357mag rifle/carbine. The Rossi that I have is a lever action and has a flat trajectory for approximately 100 yards; after that the round is into the dirt. The carbine that I have also uses .38spl which is another very common round.

If the M1 Carbine is your personal choice, then the Rugar Blackhawk .30cal carbine six shooter is an excellent sidearm to make use of. With the 6" or 8" barrel, it is very accurate and due to the low recoil factor, it is easy to double tap as well.

Since I entered this thread, I'll go the rest of the way.
For in-home defense, I recommend a 12ga with #4 or #6 shot. It has a great spread but insufficient power and penetration to get through your neighbor's walls and harm them.

The 9mm is also a great in-home defense sidearm since it is great for close-up but lacks the means to get to your neighbors sleeping next door.

That's my 2 cents, YMMV.