I was hoping to give this one another shot today, but it just wasn't in the cards. Still hoping that I'll get back out one afternoon next week, but just in case I don't here's what I've managed so far:
I think I squeezed in the one on the third row, fourth from left, but missed the one on the fourth row, second from left (when oriented correctly); for a score of 24 (Magnified Div., Target Class).
This was shot with my custom 10/22 prone on bipod with scope set to 16x. FWIW I used Aguila Match Rifle and went through quite a few targets.