Nice shot GT
Yep it's a field target gun. A Walther Dominator.
The scope is a walther scope, as standard they come black, but i've dipped this white to reduce the potential impact of temperature. We set the scopes on high mag, typically 30-50x and use the extremely shallow depth of field and sharp optics to effectively rangefind our targets which are set at unknown ranges...at long ranges (55yds) we look to be able to be accurate within 3ft of distance, but closer in we can start to measure within inches. It's necessary because the guns only fire a light pellet at around 7-800 fps which drops quite a bit at long ranges, and by the time you add windage it becomes important to know very precisely the range if you are to hit a 40mm disk at those sorts of distances, especially in competition.
If you like i've got some links to some other galleries...