I previously dialed in what I consider a great load in my little .308 Tactical Ruger using 175gr Bergers. In an attempt to make elevation adjustments easier I decided to give Leupold's custom shop a call and order up some turrets. Just dialing up a preset value is easier than figuring hold over or looking at a chart to figure out clicks.
This morning I went to a local high power range that's set up to handle shots out to 500 yards. My objective was to see how the data provided to Leupold would hold up on paper with a simple turret adjustment.
I started at 100 yards and shot one shot at each interval of 100, 200, 300, 400 and 500 yards. This took two and a half hours because they only have a cease fire every 20 minutes and I had to move the target out for each shot. The first three shots were in my opinion very good. Shot four was a bummer. The guy to my right was shooting a cannon and his shot broke just as I committed to my trigger break, I flinched Shot five was a good hold and reflective of the drift pattern from the very light right cross wind, about 2-3 mph. I wish shot four would have been better but a redo was out of the question due to time constants.
My elevation is calibrated out 1000 yards in 50 yard increments and from the results of this test it appears to be dead on. My windage turret is calibrated at 10mph, I left it at zero for this test.
In closing, for the $80 that Leupold charges for a pair of elevation and windage turrets it's well worth the investment. Total spread on this group including the flier was only 2.8" This rifle groups about .25" at 100 yards.