In my Moose & Deer Hunting group we have: Two .338's, Two 7mm Mags, Two 30.06s, Two .270s., One 6.5X55 SE
All of us have 12 gauge Pump Shotguns also for rabbits and Waterfowl, most of us have .22s for Grouse/Squirrel/Groundhog hunting too.
Not arguing...Most Deer & Moose shots are 1 shot kills ( 100m or less usually).
Great advice on this site.