I sighted in my 870 Express turkey gun the other day ( red dot scope) with 3" Federal turkey loads. Lord, did that gun kick my head off! I have been shooting my entire adult life (63 years) and have never experienced anything like that. Upon examination the recoil pad that was on the gun was about as soft as a hockey puck. Is there a pre-fit pad that I can change out and use? What say you? Thanks...