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
Ella,
You can reset the Parallax yourself on that scope based on what I'm seeing from the photo on Cameralands web site. I've done 3 scopes so far myself Simmons,Bushnell and Leupold and it's really simple.
I spoke to Leupold Tech Service and they confirmed I was doing it just like they do and it wouldn't void my warranty.
Robert