I recently purchased a Nikon Monarch 5.5-16.5, for my .22-250 Rem.  I am VERY
impressed with this scope.  It makes my VX-II Leupold look sad in the clarity, and 
brightness categories.  I got the scope from the Optics Zone, for $350, so it should
fit into your budget, and leave some money for more ammo.   I own Leopold, Nikon,
Bushnell, Burris, and Weaver scopes.  I just purchased a new Tikka T3, in .223 Rem.
Guess which brand of scope will be going on that rifle?  As soon as the gun slush
fund gets to $350, Jon at the Optics Zone, will be getting another order for a 
Nikon Monarch.
Squeeze