Well that's a pretty fancy pants way of zeroing. I've always thought it was done like this:
2 days before hunting season, go to the gun store and buy 2 boxes of whatever ammo is cheapest. Then hit the beer store for a dozen BOTTLES of beer. Can't use cans for this. But get a cardboard flat to use as a target. Just jiffy marker a bullseye on the back of it.
Get to the shooting spot and lay the case of beer on the table/hood of pickup or whatever stable platform you are using. Crack your second beer. (First was drank as a road pop)
Set up your target around 175 yards because "that's about how far I will shoot the moose from."
Balance the rifle on the beer box and start shooting. You gotta shoot fast because each time you empty another beer, your rest is getting lighter and less stable. It's good to have a buddy along to spot where the bullet hits the dirt/stump/bush and call left or right. If it's too far left, twist those dials to the right! Okay, it's too far right now? Gotta go back a bit!
Repeat that until you hit the beer flat a few times. By this time you will be about half way through your second box of bullets. Hitting the beer flat a few times is good enough, cause moose are big, and besides, everyone knows that shooting paper is for wussies and I'm poison on game.
Make sure you save your last beer for the drive home, too.