A method and apparatus for improving the accuracy of a telescopic sight used on a projectile weapon. The method allows an individual to effectively and efficiently "sight in" their firearm sight based on performance shot pattern in a target at pre-determined range values. The method utilizes a series of static gauges that represent uniform incremental indicia thereon that correspond to telescopic sight range adjustment input values. The gauges are placed on the target to indicate the required adjustment to be made to achieve an accurate shot performance at a given distance.
A scope adjustment calculating apparatus and method for calculating adjustment to a scope on a firearm is disclosed. The scope adjustment calculating device displays multiple input criteria including: a plurality of division of minute of angle for a scope, a plurality of distance from a target data, and a plurality of shot placement spacing data. Known information of given division of minute of angle for a scope, given distance from a target, and given shot placement spacing from the target center point are selected from the input criteria. Based on this known information, a given number of adjustment increments needed to zero the scope is obtained from the calculating device, and the scope is zeroed based on the given number of adjustment increments.
