Originally Posted by boredintr
Can a 6x20x44. 33 mm tube vortex viper scope mounted on a 308 be sighted from 100 yrds to 1000 yrds with out the addition of a 20 degree rail this scope has a bdc cross hair system how much adjustment is there in this scope
Boredintr on Firearms Talk
go to Vortex's website and look up the specs on your scope. it should be there somewhere in how much adjustment you have in relation to elevation and windage.
purely my guess, but with the 308 being at the very limit at 1000 yards, i would have to guess, you will need a 20 MOA base to get out to that distance to have enough adjustment in the scope to hit accurately.