Figure 158. Transition rang• target, double E-type silhouettes.
Figure 158. Transition rang• target, double E-type silhouettes.
(а) Check the gunner's position before firing.
(б) Insure that the gunner fires within the safety limits of the range.
<c) Insure that the gunner fires the course in the prescribed manner.
d. Dry Run. If time is available, the gunner should be required to dry run the exercise prior to the firing of the course prescribed above.
137. Record Firing for Table 3
(1) The rules for instruction firing apply to record firing except where otherwise stated. Any departure from the rules governing record firing disqualifies the gunner,
(2) After completing instruction firing, each gunner, when firing table 3, fires the exercise in a single time period. Ordinarily, a gunner is required to fire the exercise on a day subsequent to" that on which he fired any part of his instruction firing. However, if necessary, the officer in charge of firing may authorize the firing of both instruction and record firing the same day.
b. Equipment. The machinegun as issued is used in all firing. Ammunition will be examined carefully and defective cartridges and or links eliminated.
(1) In record firing, the gunner must perform operations required, such as estimating the range, setting the sights, laying the gun, firing and adjusting the fire, within the prescribed time limits.
(2) After the gunner has taken his place at the gun, all rounds fired by him count as part of the course. The total amount of ammunition used on the course, including rounds fired accidentally, will not exceed the amount authorized for the course. Ammunition left over at the expiration of the time is lost d. Acting Safety NCO. After the command ACTION, the acting safety NCO assists the gunner only in locating the target, and in no way assists or disturbs the gunner during the conduct of the exercise.
(1) When a stoppage occurs during record firing, the gunner holds up his hand, calls TIME, and awaits further instructions from the assistant to the officer in charge of firing. The assistant notes the time of stoppage and determines the amount of time remaining. He determines whether an actual stoppage exists; if it does, he directs the gunner to reduce it.
(2) The assistant instructor then reports the nature of the stoppage to the officer in charge of firing, who gives instructions as to whether or not the gunner is permitted to complete the course. If the cause of the stoppage was the fault of the gunner, the course is not completed, and the score stands. If it was not the fault of the gunner, he is permitted to complete the course by fully loading and laying on the target at which he was firing when the stoppage occurred.
(1) If the gunner does not cease firing at the command, 10 points are deducted from his total score.
(2) Five points are deducted from the total score for each of the first three targets not engaged by two bursts.
(8) Five points are deducted from the total score for each round in excess of 4 rounds fired at each of the last two targets.
(4) If the gunner fails to engage a target, 10 points are deducted for each from his total score.
g. Scoring. Ten points are scored for 8-5 target hits (400-1,000 meters). Seven points are scored for 1-2 target hits. Total possible score is ten points. Four points are awarded for completion of exercise.
h. Assistant Instructors. Assistant instructors and noncommissioned officers to supervise record firing are detailed as assistants to the officer in charge of firing. Personnel performing this duty should be from units other than the one firing. A maximum of two guns can be supervised by one assistant instructor.
i. Range Detail. A sufficient number of men to operate the range will be detailed to assist the officer in charge of firing.
138* Inspection Firing for Table 4
a. This section outlines the methods of conducting preparatory training, instruction firing, and record firing at moving ground targets at ranges from 800 to 1,000 meters.
b. Moving target range facilities vary widely at different installations. For this reason, the provisions of this section furnish a guide for correct training procedure.
c. Men are not permitted to fire for record at moving targets unless they are qualified in tables 2 and 8 as 1st class gunners.
d. In addition to the preparatory exercises prescribed in paragraph 121. the following additional exercises will be conducted before firing at long range moving targets.
(1) First exercise: Use a light and easily ma-neuverable vehicle to represent the target. The target should move parallel to the firing point at a range of 800 to 400 meters, at an initial speed of five miles an hour, Require estimates of range, speed, and point of aim. As proficiency is gained, increase the range to 800 to 900 meters and the speeds up to 25 or 80 miles per hour.
(2) Second exercise; This exercise is conducted similarly to the first exercise. Direction of movement is changed. The vehicle (target) is moved toward the firing point on diagonal courses, varying in direction and speed. Require estimates of range, speed, and point of aim.
(8) Third exercise: This exercise reqi^res actual manipulation of the gun to track the target moving on courses as prescribed in (1) and (2).
(4) Fourth exercise; This exercise requires range estimation, sight setting, estimation of lead, leading the target with the gun, simulating fire, and continuation of aiming with a predetermined lead while simulating single-shot fire. It should be conducted using the target on which the guns will fire, running the course on which it will operate during actual firing.
(5) Gunner. During the leading and tracking exercises, the traversing slide lock lever is released and the traversing slide is moved along the traversing bar. The gunner applies a steady and firm pressure to the elevating handwheel with the left hand, changes in elevation are made by rotating the handwheel. For smoother tracking, a steady lateral pressure is applied to the right spade grip with the right hand. The gunner must shift his body in order to stay directly behind the gun.
139, Demonstration of Firing
To demonstrate the firing, the instructor uses a demonstration crew of three men. One man, a trained safety NCO (assistant instructor), takes a kneeling position to the right rear of the gun. The gunner (No. 1) is in the correct gunner's position behind the gun (prone). The assistant gunner (No. 2) is to the left of the gun. The equipment required for demonstration is a caliber .50 ma-chlnegun (mounted), ammunition for the course, and one target of the type to be fired upon. This target is placed so that the class can see it and the instructor can point to it.
a. Procedure in Demonstrating the Firing.
(1) The instructor explains that prior to mounting the gun, the examination of equipment was accomplished by the crew as outlined in paragraph 48. The instructor then explains the course that the gunner will fire.
(2) The instructor explains how the target will move across the front, and gives the range (600 to 1,000 meters depending on range layout) that the speed of the target will vary, that the gunner estimates the leads necessary to place fire on the target, and that the gunner is not aided in his fire adjustment b. Explanation of Course.
(1) The control command is given by the of-
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