Takes me "0" seconds to be dead on at 500...
Yeah, just make sure you pick the right line when viewing a christmas tree reticle through your scope.
If you are no more familiar with your equipment than that, you had better only shoot one caliber with one rifle. Yet a scope with turrets screwed up, down, side to side is a better way to go...
Come on back in a few years when you have enough experience to see the difference.