Comfortable minimum number of guns for effective hunting?

[jeremyd4l]

my setup:
12 gauge shotgun
.223 AR
9mm handgun
7mm rem mag rifle

Got all the bases covered.
Caliber wise you can always swap to something you're more comfortable with or prefer (ex: .45 instead of 9mm) or what have you.

 

[extreme]

(2)--257 wby. Mag ,,for mice up to mule deer
338/378 wby, mag and or a 338 lapua for
everything else.