A gun sighting kit (8) and a method for gun sighting are preformed by placing a clear sheet (12) having a concentric circular graph (10) over a cluster of shots (32) on a target (28) that need only have a center location (30). A center (16) of the concentric circular graph has a hole (16') through which a center (36) of the shot cluster is marked. The kit (8) also includes a square grid (18) on a clear sheet (20) that is then placed over the marked target so that a center (22) of the grid is located at the target center in order to permit determination of the horizontal and vertical deviation of the shot cluster center (36) from the target center, in order to permit necessary gun sight adjustment for proper aiming.