The Remington 870 is a good pump, the Wingmaster is a fine hunting shotgun. The shiny wood and checkering just make it feel like quality but at a good price. You can get those at Walmart I think, I know my dad got one there and so did my uncle but that was yeeeaaars ago. The Mossberg pump is a fine shotgun too. The Mossberg has going for it two extractors instead of one. That is nice when you really want the shell to come out so the next one can go in! You can get either one, the Mossy or the Remmy, with say, a vent rib and removeable choke for a good deal. Both will also accept a slug barrel and those go for somwhere between $100 and $200 I think. You can use the turkey shot in a rifle barrel, but it will open the pattern up a lot. Usually you want a tight group and long barrel for turkey because the shots are far off for a shotgun. On the other hand, you can get slugs made for smooth bores. The Latvian steel slugs come to mind as slugs designed for smooth bores (and that Hexolit32 looks wicked!).
On Wednesday, on the Outdoor Channel? They have shooting shows all day. My favorite shooting show of all time is "Impossible Shots". MUCH better than Top Shot. Anyway, they have certain guys on there that accel using certain gear (or they are sponsored by that maker). Jerry Miculek always does the cool revolver stuff. There is this shotgunner, an exhibition shooter, I don't know his name but he is sponsored by Mossberg. He uses a plain old cheapo 500 or 590 and then throws like five to seven clay pigeons in the air with his left hand, and then shooting from the hip he starts taking them out, finishing firing from the shoulder. Awesome. So if you can do that with a Mossberg, anything else is really just icing on the cake.