Originally Posted by WildRose
Since this answer fits so many questions you should just cut and save it to a document so you can cut and paste it in the future.
Sure would save a lot of typing.
You did not answer his question! WildRose
YOTE, You could search for a better explaination. But the jest of it is: You have to have a powder and load with minimal FPS variation. Lets just use your 3000 fps numbers. Zero in lets say 200 yards with the tinnest group possible right on the X. Next shoot groups at 300, 400, 500, 600 or what ever. Measure your true bullet drop at each of these ranges. With your ballistic calculator. Plug in all your correct information It really requires an air density altitude meter.
Then you adjust the BC number up and down in the calculation tables to match the true flight of the bullet.
I've toyed with the idea of using super thin target paper and putting out a row of 100 yard spaced targets. Then you could fire 3 shots and do the measuring all at once. Super thin is the problem because you don't want to slow down the bullet and artificaly as compared to air. Light beam targets that score the bullets point of entry would would be cool. Instant read outs right at the bench rest
This is how to correctly be able to "dope the scope"