Personally if you don't want to spend a lot of money right of the bat, try some cheaper chokes like a factory xxfull choke, or a primos tightwad, or an HS under taker. As for turkey loads try some superX, or turkey thugs from Walmart. I have heard they are impressive for for low end shells. The thing is nobody can tell works best in you setup, you need to try out a few loads, and get to know you're shotgun. The good thing is, and you may know this, but mossberg accu choke is the same as Win chokes, and browning, so you can look around you may find a good choke laying around somewhere that needs a little action! Best I can say is sling some lead!