Very good glass is another critical component, optics with poor glass is worse than a lit reticle that doesn't dim enough. You can actually shoot at night with an unlit reticle and do just fine. It doesn't matter how good you are, if you don't have good glass you won't shoot worth a crap at night.
Optics are really the only critical variable. Multiple people here have shot a 300 yard IPSC steel, multiple times, at night with iron sights....
... on a pistol no less!
The desert shoots will teach you things you would've never thought you were capable of doing, and doing them repeatedly and successfully, with surprising ease.