As long as you can see the hole in the paper I watch people shoot a round, and then go to the spotting scope to see where they hit, back and forth and back and forth...
I also think there's a fine line between usable and total utter garbage. My Athlon Ares BTR 4.5-27x50 worked well enough at the 20x to make out 22lr holes on paper at 100 yards, not really good enough clarity/zoom at 200 yards though. My Athlon Ares ETR 4.5-30x56 can make out little 22lr holes at 200 yards.
The Ares ETR is pretty decent, 200yards, 30x.
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Etr looks great. Was the ares btr a gen 2 or gen 1?