The LB's pattern is extremely tight at close ranges. Make sure you check your POA/POI with some dove loads at 15 yards and correct if you aren't dead on. Make sure you clean and polish your barrel and with the 6's, you should see a real nice pattern at 40. You won't get 300 with the 6's since the 7's have more shot per ounce but 250 should be something to shoot for.