Gut:
Great to see the patterns as the snow is falling here, making me feel like patterning is weeks away.
Have you had any jam issues with your Stoeger? Mine had a bent barrel from the factory (patterned 6″ left), and the bolt didn’t always lock forward. Any other issues with that gun?
Also, do yourself a favor and try to Win. Xtended #6’s!!! If you’re ever up my way, bring the gun and we’ll test a pattern or three. I know they’re expensive, but in 3 of my guns, and several of my buddies guns, they pattern far better than the next closest try. Only my brothers gun prefers Hevi13 better. I think you’ll find that the smaller pellets (which you can get away with as they’re heavier and hit harder) in the hevi-type offerings will pattern better for you.
Make sure your choke is rated for it, there were some issues in years past with choke tubes “scoring”.
Joel