Well that is very interesting. So that means that as long as you aren't going overboard with the magnification you can look at centrefire scopes or rimfire specific, doesn't matter. Although I think a scope with parallax set at 100m is noticeably out of focus at 20m. Maybe more an aesthetic than a practical issue though - you can still hit a rabbit at 25 m, whether it's slightly fuzzy or not!
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