My "Did you hear that?" bump in the night weapon of choice is my A5 Browning, with the cylinder bore, rifle sighted barrel. It holds 5 rounds of Dead Coyote Heavy Shot. I have had this weapon since the age of 12, it is like an Old Friend.
Of course, I do have my .45 holstered near at hand for close, abrupt encounters, but if I have time to get up, and feel need to go investigate, the shotgun makes the trip with me.
"It does not require a majority to prevail, but rather an irate, tireless minority keen to set brush fires in people's minds." Samuel Adams
TFA/NRA Life Member
Chapter Leader, West TN Regional Chapter