The Mosin Nagant 91/30 has iron sights zeroable up to 2000 meters. Even though the rifle can only reliably hit a target at ranges under 900 meters, for ranges of 300-900 meters, you should have accurate fire, assuming you have the necessary skill to hit a man sized target at that range with iron sights. :P Do this for the mosin and all other rifles that have adjustable iron sights.