Ive got an 18.5" Maverick 88. Id like a little better spread for hunting purposes; I was originally going to get a 28" barrel, but it seems that they are only 40-50 dollars short of what I would pay to buy another Maverick 88 haha.. Anyway, would threading this 18.5" Barrel for a choke tube be a good idea? If so, how much should I expect to pay to have it done?