My son (sharpshooter, many 1 shot 1 kill awards) and I (old, bad eyes) have an ongoing disagreement. I am hoping I can get some support for my side of this. He is military trained and as mentioned an expert. He says that each individual may have a different sight picture and therefore a different sight adjustment. I say geometry is geometry and if the theoritical rifle is sighted in perfectly via vice and laser (or some such) and every shooter holds the "correct" sight picture the result will be the same for all. I am unable to understand his side or debate to a win on my assertation. An example of his point was made yesterday at the firing range. A .22 CZ was being sighted in, me helping a less experienced friend. When I finally got the rifle shooting tight groups in the 10 ring he tried it and was consistantly shooting the correct elevation but 2" right. I blamed his trigger pull. We adjusted the sights 2" left and he was consistantly in the 10 while I was 2" left. Come on now did we adjust for his trigger pull or can 2 people really see differently???????????