If the scope will not return to zero it needs to be replaced no matter what method of use. It is an accident waiting to happen. If it moves 3 moa after a ten moa up and back ,,, well I would not be using it and I don't think any of us would.
You are correct, what the OP stated in his second reply was he was changing some gear to get beyond 500 reliably. That is where I got that from, that and his initial question.
OK, so here is my disclaimer so often needed these days on LRH. My posts were made only for those who have scopes that track and return to zero. And I was not trying to upset any of the hold over boys as this post was indeed about dialing in for a shot.
Over and out, as I am not up to date on what it takes to successfully dial a scope and hit targets cold bore and it was even mentioned my methods could produce wounded animals.
But the last 30 plus elk, deer and antelope have all been one and done with my rifles.That does not include the coyote at 1300.
Good day
Jeff