I ran basic numbers through this
Balistics Calculator and at 25 yards you need to be almost an inch low, you don't cross the line of sight till aroung 60 yards. You have to remember the 204 is one flat shooting round.
I like knowing that first intersection value because if your gun takes a hit and you want to recheck zero you pace out that first intersection value and fire a couple of rounds you'll be able to get a good idea if your in trouble.
it's no replacement for sighting in at actual range but it a good guage.
I would consider sighting in for 250 you might as well get the most out of the round.