Very “unnoficial” patterns, but here are a few for comparison. All out of the same gun, same choke (I forget which one, but some sort of xtra full turkey choke)
1. 3″ pheasant loads (5’s)
2. 3″ turkey loads (5’s)
3. Same load as #2 – sights adjusted slightly
4. 3.5″ Hevi-Shot Mag blend. 5’s, 6’s, 7’s. Sights adjusted back slightly from previous shot.
These shots were taken at about 25 yards. The drawings obviously are not to scale, and I’m no artist.
you get the idea, though. Good group with the Hevi-shot…