Pooch, I got started shooting smallbore silhouette, then large bore. So running a scope up, down, and sideways, was essential to be consistent.
There, I met up with some guys that shoot "UKD" matches.
UKD is "Unknown distance" shooting.
All the skills of sniper training, but no electronic do-dads.
Keeps it fair for everyone, and prevents an arms race atmosphere.
You range using mil-dots, do you calculations on a note pad, dial in your dope, and send it.
A match might have 10 stations of different sizes and ranges, all unknown to the shooter.
The last one I shot had uphill and down hill lays for the shooter, with up hill and downhill targets. It was a very difficult course of fire.
Imagine laying headed downhill on a middle aged spread, and then attempt to shoot uphill across the ravine, while wearing bifocals.
If you like to shoot, and like to fiddle with optics and rifles, I highly recommend finding a local group of guys that shoot it.
The first time you dial in some numbers and hear a solid "WHACK" a couple seconds after you fire, you'll be hooked.