I prefer an elevation turret as well. But, I just ran the ballistics for Hornady Superformance 7mm Rem Mag 154gr SST factory load at 3,000 feet elevation. If you zero at 275 yards, you POI won't be more than +/- 3.5" from line of sight from 0 to 325 yards. If 300-325 yards is your limit, use a regular duplex and just zero at 275 yards and hold dead on.
Bob
Last edited by Bobcape; 09/20/14.
