Nikon's Spot on has an altitude factor. I have both Spot-On and Strelok on my phone to play with. I live at about 1100 feet and my dad lives at 6500, so if I were to go shoot up there I would print out new charts with the elevation difference considered. I consider all of that stuff as toys to play with. IMO, you have to spend gobs of money and time on a rifle, scope, rangefinder, spotting scope, learning to shoot, learning to handload, learning wind, ect to know for sure that when you pull the trigger on a game animal at 500+ yards your bullet will land where it is supposed to with an acceptable margin of error. Not to mention that it's an animal that can move several feet in less than a second.It's interesting that none of the BDC scopes I know of have altitude correction in their adjustments. Such stuff is needed if your scope's BDC system actually matches your loads balllistics (which is rare) and use at 600 feet altitude in Ohio then you go elk hunting in Colorado at 7000 to 8000 feet and the bullet drop at long ranges needs a 4 to 5 MOA less muzzle angle to hit the point of aim. That 7-point bull will walk away thinking large mosquitos are flying 2 to 3 feet over its back.
I have the Monarch Nikon with BDC reticle on a RRA predator pursuit. Like to use it for coyotes. I zeroed mine at two hundred yards with a 62 grain bullet and was on target at 500 yards. Mine works as it is meant two at I have taken verrrry aggressive jack rabbits out at 300 yds and one at 375. It wont work if you use a 55 gr or 50gr or 68 gr. You have to rezero for each particular bullet weight so that the BDC can work. Just my 2 cents.
The BDC type reticle, regardless of who's it is, is a trajectory type reticle only. I don't know where you are, but the wind blows in Montana & Wyoming.