Rocky Mountain Elk Calls Elk Rattle CageRattle this and you may have to shoot out of self-defense! The bull elk hear the antler clashing sound and it triggers the need to eliminate competition.While calling elk whether with a bow or a rifle, the bulls will sometimes hang up 75-100 yards from the caller in the trees. What you need is a little extra somehtnig to convince them to come closer to investigate. This could be the key to you slaying the trophy you've always wanted to hang on the wall!Don't be afraid.