Welcome aboard.
This doesn't sound like a calling rifle, LR maybe. I have no experience since the 60's and 70' and some of that was with receiver sights on an M-14.
Hopefully some of our members are into that kind or equipment and can help you.
If not I'd find a dedicated LR sight or thread for that info.
Accurate Shooter, Sniperhide or 24hrcampfire all have LR info. I hear NightForce, Us Optics(your brand), Swarovski and Hensoldt mentioned when talking LR.
Now predator hunting optics, equipment or tactics, this is the place.
Hopefully some of our members are into that kind or equipment and can help you.