Have you shot the shorter LOP stock to ascertain that that dimension is the correct one for you and your spouse? I see many folks who think they need to "scrunch" up on a stock and something that is basically way too short, when an extra inch or two would make the gun better fitted to the shooter - and thus more pleasant to operate, especially if you are using zombie-killer loads...
Gun FIT is paramount - it helps alleviate recoil, helps keep you on target, and makes success easier to come by.