My shotgun recommendations always go the same way, Remington 870 Wingmaster Magnum (the Express line took some shortcuts to reduce price I don't like). I like the magnum because it gives you the option of shooting 3" shells but handles 2 3/4" just as well as the 2 3/4" guns do. I'm not sold on the 3 1/2" Super Magnum, if you need that much payload, get something in 10 gauge.

The thing that's great about Rem 870's is the aftermarket. You can get extra barrels (swapping barrels on an 870 is way easy) and stock sets to make the gun fit you. I had no need or desire to get extended magazines or any of the other tacticool BS that folks like to hang on their guns; it just screws up the balance. One of the better guns I own was a used 870 field gun (2 3/4") that I bought a new barrel and stock set for to use at Trap and Skeet.

After you've broken it in you can give it to your grandson.

I've shot Skeet doubles with an 870 pump It's a challenge but it can be done and it's a huge confidence builder knowing you can shoot, swing/pump and shoot. Do not baby the 870, pump it hard as you swing and concentrate on the second bird.