Don in response to your question about acceptable "Point of Aim versus Point of Impact" I have done some research and found very few definitive answers. I have a Beretta SO5 which is a hand made over and under. At 40 yards the bottom barrel shoots 4" lower and 6" to the left. I used a pattern analysis program called "Shotgun Insight" to analyze the data. This bore out over several different cartridges and chokes. The patterns were shot freehand. Over on 16gauge.com the resident BBS know-it-all stated he got a figure from Browning of no more than 4" difference in point of impact between the two barrels. He quotes Stan Baker all the time and says Stan helped him get satisfaction from Browning.
Best,
Mike
Last edited by AmarilloMike; 07/13/08 08:34 PM.