Like frmcntry said only use the 270 if you DON'T want to keep the pelt. This will blow a big hole in the hide and make it worthless. If you want to keep the hide, try to get a 22-250, 223, or even a 243 at the most power. Otherwise, use the shotgun with BB shot or 2 shot. With the shotgun, you'll want to stay in the woods or somewhere with close cover so that they will need to come within range to see where the call is coming from. Also, stay in the shadows and downwind of where you expect them to come from. Use a decoy if possible.