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Inside 250 yds, when zero'd for 200 yds, the ballistics chart is more for wind drift than bullet drop. Beyond 300 yds, the ballistics chart helps with both wind drift and bullet drop. Examples: #1 A 165-gr SPBT bullet with a .477 BC and 2800 fps muzzle velocity, zero'd at 200 yds, at 300 yds in a 12 mph cross wind will hit 7" low and 6" left/right. #2 A 180-gr RN bullet with a .280 BC and 2700 fps muzzle velocity, zero'd at 200 yds, at 300 yds in a 12 mph cross wind will hit 9" low and 11" left/right. A ballistic chart is cheap, especially when free, and I wouldn't be without one, at least not in open Elk country.
FWIW, a 4x power enlarges the image to twice its size in length and height. A 12x power enlarges an image 3.5 times its size in length and height. A 12x is not 3 times more powerful than a 4x scope, only 1.75 times as powerful. An 18x scope is twice as powerful as a 4x scope. a 25x scope is 2.5 times as powerful as a 4x scope. Something to consider if you want to shoot beyond 300 yds.
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