I've asked my eye doc about the glasses with the optical center set for looking through a scope. He said it can be done. I just can't see paying for something I would only use a couple hours a month. Now if I was competitively shooting that would be a different story.
I've never researched it before just talking to other shooters so I just did a little looking. Most shooters look thru the top section of glasses when shooting and if your using a scope it may be the upper corner closest to your nose (depends on left or right handed). I googled shooting glasses optical center and found this.http://www.cleartargetoptics.com/faqs.html