BTW, I tried three proven scopes. LHT 3-15, EOTECH VUDU 5-25, and a LHT 4.5-22. The 4.5-22 was relatively new, and I initially blamed it. After trying the other two and a variety of mounts, Seekins x2, badger, larue and accutac, I get consistent results.
I would almost think I could “see” 13...