To jakesmith09-
In NJ we have shotgun only and muzzleloader as well. The seasons overlap a bit, but also allow for individual weapons days.
Becuase I live in a shotgun only state, I put a hastings rifled barrel on my 12ga Wingmaster and a permanantly mounted scope ( done by a lic. gunsmith)on the receiver. Scope never moves, and the barrel never leaves the gun except to clean. This setup shoots consistantly year after year. I shoot Hornady SST's and get remarkable accuracy at 100yds on the bench.I purchased a separate shotgun for turkeys, birds, bunnies etc.
Go with a dedicated slug gun. It'll be worth it in the long runfor what its worth.