Or if you have MOA numbers on your scope, do exactly like stated above but don't multiply by the clicks per inch of the scope...
Example:
If you have 1/4MOA adjustments on your scope, then 4 clicks = 1 MOA (or one whole number)
57.5 inches low at 600 yards you would divide the yardage by 100. 600/100=6 Divide the drop in inches by this number. 57.5/6 = 9.58 Adjust your scope 9.5 MOA-9.75 MOA or 38 or 39 clicks.
NOTE:
1MOA = 1.047in @ 100 yds or ~1 in
1MOA = 2in @ 200yds, 3in @ 300, etc.....
This all assumes that your scope 'clicks' are as advertised... many are not exactly 1/4 or 1/8 MOA, which can confound the above techniques.
Take your gun, at 100yds, and shoot a group. Dial on 5 minutes of elevation, and shoot another. Should be (shooter ability allowing) centered exactly 5" above the center of the first group. If it's not, say it's 6" (like my Sightrons) for 1/8 moa clicks, then it works out to abut 0.150" per click at 100yds instead of 0.125 (1/8"). Then you get to futz around generating click charts for various ranges, since you can't just dial on 9 'minutes' as indicated on the turret, as it would _really_ be more like 10.8 minutes (9 'minutes' * 8 clicks per minute * 0.150 MOA click per minute)... PITA, to say the least. *Very* important to determine what your 'true' click values are before going any further.
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