I like a 12 gauge pistol grip and with a light and birdshot so not to over penetrate the walls. plus just racking the shotgun would make any perp **** his pants!!! birdshot will still keep a tight pattern under 10ft which is usually as long as long as most hallways are in homes. rural areas would be great for semi-auto rifles and higher caliber pistols. I'm looking to buy a nice double barrel coach gun!!! goodtimes!!