So I'm fairly new to long range rifle shooting, with most of my previous experience being <100 yards, mostly because of the availability of a firing range. I'm looking for a good scope for my rifle that will let me shoot out to 1000+ yrds with fairly good accuracy. I own a Remington 700 chambered for .30-06. I'm also operating on a student's budget here, so I want to stay away from the $2000 scopes. Under $500 would be even better. Any suggestions?