I use a 300 win mag mostly, just for the fact it wont run very far if you manage to wing him. I love shooting 308 though, then there is alway a trusty 303 for a back up gun(never go moose hunting without one/It will bring you luck from all the previous moose it harvested,lol). Last year was the first time I ever call an animal but it worked. Mostly looking over cut overs and bogs, however when there is a lot of sign in area we will wait it out if need be.