from what i read from others hevi shot had a batch lot #s that they changed something and it didnt pattern as well, but all in all it will still get the job done and still is a great product. just not putting out the monster numbers as before. they seem to be better now. as far as playing with your pattern on your gun you dont want too tight of a pattern for the up close and personal shots. but thats where iron sights and scopes are key. i think that you should have a good even 10″ pattern but still have enough in a 20″ circle to allow for wiggle room. Its easy to get carried away in the lets see what this rig can do idea. what fun would it be if you could shoot birds a mile out and not work them and fool them