Suggested Load for my Mossberg 535 ATS?

[no_1_u_know]

I have a Mossberg 535 ATS with the stock 20" turkey barrel with the tru-glo sights and the XX Full choke that came with the barrel. I am working in the field for the next coupla weeks, and I am probably not going to have time to test many loads. However, I do plan to sight it in before heading up to Sicily Island Hills WMA in Louisiana for the March 27th - 29th lottery hunt. I was hoping someone here may have the same setup and be kind enough to suggest a good turkey load that works well (or maybe two) that I can try. I want to shoot a 3" shell and not a 3.5".  Any suggestions greatly appreciated.

Thanks very much!!!