A fantastic start scope in the price range would be the SWFA Super Sniper 10X42 in either the side focus or rear focus... I prefer the side focus, but that changes the price from $299 to $399.
Rear focus ($299): https://www.swfa.com/swfa-ss-10x42-t...lescope-6.html
Side Focus ($399): https://www.swfa.com/swfa-ss-10x42m-....html?___SID=U
Note here, these scopes come with a Mil-Quad reticle, but can be had with Mildot reticles as well. Do a google search on youtube for the SWFA Super Sniper 10X42, and then let the viewing begin!
I loved these scopes so much, that when I got the funds in hand, I moved up to the SWFA 3-15X42 FFP Super Sniper scope. I own two of these, one on a Remington 700 Long Range (30-06) and the other on my RPR (308). The original 10X42 scope I owned was the side focus variant, as I prefer side focus over rear focus, but either would serve you well.
I am biased, as I have never really owned any other long range brand of scope, so I defer to others for their expertise.