well i have a H&R pardner turkey gun that is nice, but it kick like a mule so you would want a slip on recoil pad and it shoo 2 3/4 to 3.5 inch, and i am getting a smoothbore barrel that takes screw in chokes, but they do make fully rifled deer barrels too. just go to hr1871.com and go to guns and if he like one then go to customer support then go to the barrel accessory link and find a another barrel he wants, but if i was going with one the pumps you suggested would have to go with the mossberg the remington it way to expensive and he wouldnt mind a used pump gun he could a get a winchester 1300 there pretty good too.
hope this helps
mike