In my Browning BPS 3.5" 12 gauge, my turkey loads are the Nitro Ammo Co's 2 & 5/8 ounce duplex load. A friend who shoots the identical load and identical shotgun calculated the recoil to be almost 85 lbs. I'm not sure if it is 85 lbs but I can tell you that I have had enough after three or four shots from the bench!