Good advice here. You could spend a lot of time and money chasing scopes, but setting a budget is the first step and look for recommendations at the local PRS matches. Most shooters are happy to talk about their scope, likes/dislikes but keep your budget in mind.
I like the 3-15x/3-18X range for distances out to 1000 yards. I prefer mil/mil and FFP.
SWFA or Weaver Tactical's 3-15X scopes are very good and I've used both getting out to 1000 yards on a Savage 10 in 260 Remington.
One to keep an eye on is Athlon. I haven't used one yet, but strongly considering their Midas BTR in 2.5-15x50 for a budget varmint rig