1Oz #5's @ 1300ish from a 20 while no slouch, are certainly no 12Ga 1.25Oz "Duck and Pheasant" type recoil. Reliable gas 20's are soft and stay on target really well.
My Franchi AL48 28Ga out-recoils all my 20Ga SxS's and the significantly heavier M12 20. The Gas 20 Berettas are exponentially...