Drop Chart Question

[Drew_CarreyAB]

O.K, My dilema(sp) starts with this.....Your scope is dialed in for bang-on at 100 yards, the drop chart says that if the target is 300yds away the bullet will drop 19.6" (.303 Federal 180gr). Now at 1/4" per click do I turn up the elevation 78 clicks or is it like when shooting groups(they say that if you shoot 1" @ 100yds, the group will open up to 3" @ 300yds). So would it be more clicks or the original 78????? Hope this stumps someone else too LOL