I have an old remington 1100 that I picked up in a trade as my first shotgun. It is kind of beat up, but I really like the gun and want to make some improvements. I am just about finished restoring the stock and fore end and now I think it is time to move on to the barrel. It came with a fixed full choke, but I want to get it cut to accept screw in chokes. I would also like it to have a vent rib on it. Would it be more cost effective to buy a new barrel or take it to a gunsmith in order to get these changes done? If buying another barrel is a better option where could I find a decently priced barrel?