Re: Vortex Viper 6.5-20x50 PA...
I have one on my 308 and have been happy so far. Scope tracks and holds zero well.
I wish it had a little more eye relief, not a big issue on my 308, but could possibly be an issue on a heavier caliber rifle.
Call Scott at Liberty Optics, that is where I got mine. I was very happy with the service I received.