Exactly my thoughts as well - at ranges in a house, you need to be as accurate with a shotty as you do a rifle; the shot doesn't start spreading for 10-15 yards, minimum.
Lots of ammo - I've never heard anyone in a firefight complain of too many rounds available! Because if at first you don't succeed,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try,
try again!
“Why’d you shoot him 44 times?”
“Ran outta ammo.”