Regarding proper targets: It's sad that 10 years ago, when my eyes were younger, I could shoot 1/2 groups with my WOA upper with open sights - and I mean the P.O.S. open post sights on my Service Rifle. About the time my eyesight started going south scopes began being allowed in Service Rifle competitions, so I thought it would be nirvana. Unfortunately, with a scope, I have only tied my best score that I shot with open sights.
Two lessons I learned: 1) scopes don't make you a better shooter, and 2) aging sucks. 😄
