2003 US Army BRADLEY GUNNERY 503p.pdf - Survival Books

FM 3-22.1(3) Plotting Aiming Point on Scoring Grid. Plot the aiming point on thescoring grid of the scoresheet. In this case, go right 3 3/4 mils and up 3 1/2 mils(Figure B-18). You and another tester can practice recording boresight aiming points withthis technique by laying the 25-mm gun on different parts of the test panel. Practiceobserving and recording the AZ and EL coordinates for the same aiming point. Youshould be able to obtain AZ and EL readings to at least the nearest 1/4 mil. However,taking readings to the nearest 1/8 mil produces optimal testing results and aimingpoint accuracy.Figure B-18. Plotted aiming point.e. Gun Lay. Before testing begins, aim the gun near the center of the test panel.This increases the likelihood that aiming points will fall on the grid during testing.Aiming points off the grid are difficult to record and score. Lay the gun with boresightequipment and with the turret in manual operational mode. You will need boresightequipment scoresheet and pencil. You can lay a gun accurately with a boresight kit, ifyou have one, using the following procedures:(1) Insert the adapter into the gun barrel.(2) Insert the telescope into the adapter with the eyepiece facing up.(3) Tell the gunner to lay the gun so that the telescope reticle aims at the center ofthe panel.(4) Focus the telescope (Figure B-19).• Focus the reticle using the reticle-focus ring.• Focus on the target using the target objective-focus ring.B-14