before buying a long range scope for varminting, consider the type of varminting you will do and in what sort of environment, if it's foxes at 200-300yds all you need is an 8x56 fixed that's zero'd at 200. if it's further you may wish to have turrets,,however, if it's at night and you don't have numerous minutes to stand and dope the wind, check your laser range finder, adjust for temperature, elevation, humidity, and range, drift, etc. etc. because the fox will have buggered off by then,,,,,THEN consider a ladder reticle/varmint reticle where you have both drift and drop marked to say 600yds, like the ZEISS,,or alternatively the swaro BT colour code system, as you can range find, quick dial on colour ring or hold on a lower ladder on the reticle, and squeeze.
if you're in the field and have all the time in the world to range find, dope, etc. etc. etc. yeah, why not go for a MOA dual turret tower system, it's fun, but not fast, so consider your objectives and how it's to be used before dropping big cash.