I just got an excellent deal on a used Remington but the only downside is that it has a rifled barrel. If I was going to keep this gun around for HD, casual small game hunting, and maybe small bird hunting (grouse are very common in my area and make for a really fun time) would I be foolish to trade barrels for a smooth bore 21" barrel with rifled sights on it? I have rifles for dear hunting but another friend said hang on to the barrel because they are hard to find.