Couple of questions:
Is 330 a typo? I'm assuming a 338 RUM.
Will this be a walk and stalk rifle or shot from a 'hide'?
A variable power for one situation and a fixed power for the other would be my recommendation.
Either way I'd read the scope article http://www.longrangehunting.com/articles/low-priced.php
and setting up your scope by Jerry Teo.
On my walk & Stalk 338 RUM I have a Weaver Tactical 4.5x14 w/mil dot reticle.
On my hide only 270 AM I have a SuperSniper 16X w/mil dot reticle.
The only draw back to the Weaver is the ret. is in the 2nd focal plane and it has 1/8 minute clicks.