Re: VArmit Scope
IOR is a great choice too.
Lablover, I think the lower powers are a better choice because of the mirage factor.
It's kind of a Catch 22. Too little power, you can't see the varmint. (I assume you mean small animals like PD or chucks??), then you go with a high power scope, (over 20x), and mirage seems to be a problem in most scopes.
My rule is, the least amount of power to see the intended game clearly...sakofan..
It's only rock and roll....But I like it!