If it takes six 7 shoot groups to be 90% confident that I'm within 15% of my real group size using the extreme spread method of measuring.
http://www.border-barrels.com/articles/rimfire_accuracy/group_statistics.htm
How many shots would be required to get the same level of confidence that my groups were within 15% of actual size using the average to center method used by a program like OnTarget?
http://www.border-barrels.com/articles/rimfire_accuracy/group_statistics.htm
How many shots would be required to get the same level of confidence that my groups were within 15% of actual size using the average to center method used by a program like OnTarget?
