Strosfan,
I can tell you that Vortex can not reset the parlx on their 2-7 Viper to rimfire yardage. I had the same idea as you. I'm still using a 2-7 viper on my .22. Wouldn't mind a little more top end mag sometimes at the range. If Poodleshtr knows right, I can deal w. a half inch of field error.
Ella
