Great scope! - Vortex Viper PA 6.5-20x50mm Rifle Scope, 30mm Tube, Second Focal Plane

For the money, hard to beat. This is my first experience with a Mil Dot scope but I found more than enough information on line to figure it out. This Viper is very clear even at 20 power. However, you might note that, the eye relief beyond 16 power becomes very critical. I have mounted this on a 6.5 Creedmoor, so recoil is very light and close eye relief is not an issue.