Low light? . It was so dark that I had to sight against the sky first, then drop it down to the moose some 50-70 yards away. Three times I did this, until I was sure of my aim point/bullet placement.
What has worked for me in this situation is to keep both eyes open and stare intently at the aiming point with the off eye sort of like shooting a stick bow you will the bullet to fly it's course. Zen night hunting grass hopper.
That's what I did. Once the sights dropped below the horizon, they were no longer visible. Raising them above the horizon once more made them visible, and I did it 3 times to make sure they were staying aligned.
And a moose is a big target! Perfectly double-lunged him.
