I dont have the same gun, but I really like the Indian Creek .665 with the 3" XR #6's.
I know thats kind of apples to oranges, but out of both my Winchester SX3 and the Stoeger I am getting 200+ in the 10" at 40 yards.
I get a little bit more with the Stoeger. 220 on average.
Stoeger M3000 at 25
Stoeger M3000 at 40
25 yard pattern with Winchester
40 yard with Winchester