Thanks for that help so far. I've always wondered if there was a standard way to measure groups. I for one can shoot alright but need to work on the grouping. IfI shot 20 times at 100 yards,I could maybe get a 3 inch group with ten of the shots but I always have some that won't stay in the group. If you think about it, what if you shoot a bullet 3 inches high of POA and then drop one 3 inches low? It would be a 6 inch group but not necessarily bad shooting. You really were only 3 inches off the mark both times which would still kill a deer without difficulty. I don't focus on the groups when shooting as much as how far off the point of aim I was. It shows inconsistency to shoot a 6 inchgroup but not neccessarily BAD shooting. That's my theory. Sometimes I've gotten 2 inch groups that were nowhere near the center. It shows consistency but it's not good shooting. I would love to hear more comments on this topic.