Using the elevation turret properly

[ltcjwb]

6.5 creedmoor 140 Sierra GK SBT 2795 FPS
1.5 sight height
.495 BC
4-16x44 vortex viper pst FFP adjustable elevation/windage turrets

I'm having trouble dialing in at longer ranges. I have multiple charts that show MOA adjustments and they seem quite high when shooting out to 500yds plus? Could it be that my the charts are incorrect or are my turret adjustments not accurate? I'm zero'd at 100yds and at 500yds and according to my load data charts this should be what to expect, I should be 9.6 Moa or 51" of bullet drop @500 yards?.... hmmmm

I didn't major in math, but 1 MOA at 500 yards should be 5". 51" of drop should equal 5.2 MOA, or 1/4" under 21 clicks.

 

[toddcox35]

51" @ 500 yards... 1 moa @ 500 yards = 5"... 51"/(5"or 1 MOA) = 10.2