Gnomon, the bottom of the sling is over the top of your left shoulder (assuming right handed shooter) so that the buttstock is suspended behind your left shoulder. The shotgun hangs down with the trigger guard forward and barrels inclined downwards and towards the front so that the forearm hangs naturally by your left hand. The barrels point to the ground a few feet in front of you. (Which is why this carry is not good if dogs are present.) Grasping the forearm, you flip the shotgun over as you pull it forward and across with your left hand to raise it into shooting position. It is easier to do than describe. -Bill
