I own two of these scopes with the APMR reticle. Love them
. I can't speak for springer capability, but as they are glass etched, and for the price, I'd be willing to give it a try.
Neither of mine did 10 yards at max power, but it only takes about 1/2 a turn of the objective ring to correct it, maybe a full turn I don't remember, but very little anyway. Use a thin rubber sheet jar opener if it doesn't loosen with bare fingers. Maybe it's not the ideal situation, but the other features and the price point of this scope make it, for me, not a problem. If it still doesn't loosen I can show you the tool I machined to fit in the notches inside.
Love that FFP! The Athlon 6-24x50 is the right mix of features. Enough power for accurate range finding, the APMR reticle makes it super easy to have a reticle cheat-sheet of aim points (I put mine on the objective's flip up scope cap).and the FFP lets you make power changes with no change in the reticle aim point! Best of all compared to some similarly priced (or slightly less) scopes, the Athlon has no optical distortion all the way to the edge. It's really a great view compared to Leapers 4-16x for example, which I also have. It's a night and day difference in distortion. If all a scope has to be is crosshairs, it doesn't matter, but I often use the scope as a spotting scope, and the Athlon, for it's price point, is a great view.
Even though for HFT you're not making power changes so the FFP feature is not really utilized, a HFT rig might get used on occasion in real small game/pesting use, and then the FFP with power changing is super cool.