My 2" gave very nice patterns. I only loaded 7/8 and the much heavier 15/16 ounce loads. Be more interested in point of impact than counting pellets. All you want is a uniform pattern at 20 yards. If you have than you should be very good at 25 yards and decent at 30 yards. Past that you ought to take another gun. A 2" will kill birds past 30 yards but not consistently and birds deserve a clean death,. not to be hit but never recovered. In heavy cover, shots are mostly short and the chance for a followup shot on a second flush later, after the flush and escape, is almost none.
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