Mil dot
You need to know.
Watch this Marine Sniper / Instructor explain Mil Dots.
Then, follow on for more explanation, he goes on in further video's about Minute of Angle (MOA)
Figure out how you can use a Mil Dot scope with your rifle at given distances for your rifle.
Instead of yards, think in feet, or meters, or what is familiar to you for range. I'm most failure with feet and yards.
If you are zeroed in at say 50 feet, at 100 feet you will need X MOA to achieve your bulls eye. At 150 feet you'll need XX MOA to hit that bulls eye.
The MIL DOTs on the cross hairs in the scope are your quick reference to make those elevation adjustments with just your eye.
This is without changing your bucking at all. And with using only one weight of BB.
So, say you have a decent MIL DOT scope, and you know it is consistent (zeroed) at a given distance, you can quickly choose to raise your point of aim by a number of those Mil Dot gradients in your scope. (Example: one X, or two XX, or what works for you, your gun, with the BB's you use.)
And because you practiced at the zero point, then a known greater distance, and a known even greater distance, when you see team reds guy turkey up you can elevate with your eye and have your shot more accurately bink him on the bean.
It's taking "real steel" knowledge and scaling it down to Airsoft fields.