RE: 300wby mag best grizz medicane between the 3
make common sense your friend.
scoped rifle with 30" barrel and 3x scope at the lowest. 3 or 4 shots but you won't have time for more than one after u recover from recoil.
20" or shorter shotgun with reflex sights. 8 shots and may have time for 2 or so before you get mauled depending on the distance and whether or not it's a bluff charge. [8D]
I'm beginning to wonder just how many of you have actually been in close with animals and had to make a shot under extreme stress. Your not remembering what experienced people consider lessons learned.