True.
There are several variations of what Form described.
But in general, if you shoot your laser a few times, you'll find a landmark/cutoff line for AIM LONG and sometimes also AIM SHORT.
It is perhaps one of the most/more valuable tools in the reticle.
Once you start shooting, you can just eyeball how far/close they are tonthe landmarks and hold a corresponding "eyeball measure" towards AIM LONG/SHORT.
Very good for the chaos where the target will stand for a few seconds only before it rejoins the herd. You can really snatch the opportunities presented and get well into the second magazine.
But you need to be disciplined, observe impact, hear the smack to asses the shot or track it until you're certain. Count the deer, have an idea of area and respect the cutoff line however deep you are in the red mist.
Plenty of time to regret the success; you do not need to add "tracking" to the list...