Just another introduction post, hello folks from the mountains of Virginia. Recently got a new rifle set up for taking down varmints on my "farm". I raise chickens, and also have dogs/cats and every once in a while I have the need to remove a groundhog, skunk or my most recent foe, a Red Fox. Ol' Mr. Red has taken at least 13 chickens. In addition to turning my chicken run into Ft Knox and implementing 24/7 lockdown, I purchased a Ruger Predator (American) bolt .223 and placed a SWFA SS 12x42 MRAD on top of it, along with a predator light... Here to learn and absorb information... Originally found this group looking for zero stop shims for my scope, which I found here.