I've owned a SBE I for ~3 1/2 years and for the most part it has always seemed to pattern well, however, this spring I began to closely analyze my patterns and there is definitely a trend showing with higher densities of shot on the left side of the targets. It appears that if my POA was moved right about 3-4", I would have a much higher density of shots in the 5" ring and in the 10" ring.
I have shot a couple different shell types through it with similar results. I typically shoot (pattern) it with a hot load 3 1/2" Heavy Shot shell made by Nitro Company, however I've also recently tried the new Winchester 3 1/2" High Density shells with the same results.
Can I adjust the POA to the right? Is there a problem with the barrel? Any ideas? Suggestions?