How to Adjust the Rear Sight on a 30-40 Krag

Fire one shot at a paper bull's-eye target set 100 yards away from the shooter's position. Do this at a local firing range or outdoor shooting area, Make sure the crosshairs of the rear peep-sight are centered on the bull's-eye.

Retrieve the target or use a spotting scope to examine how close the shot is to the bull's-eye. Prepare to adjust for windage by deciding if the shot is too far to the right or left of the center of the target.

Turn the knob on the right side of the sight-rack to adjust the windage. The sight-rack is the metal piece that mounts the sight to the stock. Turn the knob toward the barrel of the gun to adjust the sight to the right. Turn the screw toward the shoulder-stock of the gun to adjust the sight to the left. The markings on the base of the knob indicate windage adjustment in 1-inch per 100-yard increments.

Adjust the elevation of the sight by deciding if the shot was too high or too low to the bull's-eye. Turn the knob on the left top of the site-mount to do this. The markings on the bottom of the knob indicate height adjustment of 1-inch per 100-yard increments. Turn the knob to the right to raise the elevation and to the left to lower it.

Fire another shot at the bull's-eye and examine its placement in relation to the center. This will help determine if further adjustments need to be made.