Most highpower shooters in this part of the country use Kowa scopes. I have a TSN-821 with a 27x eyepiece. I guess the theory is that light gathering ability (80 mm objective) and optical clarity trumps raw power. I agree, sometime .22 holes are difficult to find in the black bull, depending on light and background.
A buddy of mine has one of the old Unertl Marine Corps scopes. I think that its 60x with a huge objective. We compared it with the Kowa when sighting in 30 cals at 600 yds. The Kowa was better.
Laphroaig