I love the RAR and want one myself but the Fusion ammo used to produce the groups shown by the OP deserves just as much of the credit. It, just like the RAR, is easily the best in it's price range and will outshoot some much more expensive stuff. IMO this rifle/ammo combo is the ultimate budget-minded combination.
I have a very strict gun control policy: if there's a gun around, I want to be in control of it. - Clint Eastwood