I have a Ruger #1 in 204, I got when they first came out. I was quite impressed with it, taking I don't know how many prairie dogs, foxes and coyotes.
Earlier this spring, we got invited to rid a 30,000 acre ranch of Prairie Dogs. My wife who also was involved and who was a fan of the 204 decided she wanted her own rifle. So she had me buy her a Ruger American Predator in 204 after my experience with my RAP in 6.5 Creedmoor.
She, nor I, were disappointed, The RAP is as accurate and rifles costing three times as much, an example being wife's 6.5 Ruger Precison, and my Ruger #1 in 204.
I don't believe you'll find a better rifle for the price of the Ruger American Predator. Just watch some of the You tube videos on the RAP.
We know the 204 isn't a big kicker, but I did put a muzzle brake on wife's rifle. Its then like shooting a laser where you can watch the result of the shot.
My problem with the 204 is I over "mathed" the trajectory. It shoots flatter then you think. I just zeroed ours for 250 yards and disregard the elevation knob. It'll shoot the little dogs about as far as you can see them.