My #1 hunting buddy has a new X2. Here's what he found to be the ticket;

Rhino .670 ported / extended choke tube.

3.5" Nitro Hevi-shot, 4x5x7 in (I believe) the 2 ounce payload.

A very compact holo-style sight by Hakko. Multi reticle, very nice.

That shotty throws one heck of a turkey stompin' pattern.