Correct Sight Alinement And Correct Sight Picture

Proper Sight Alignment And Sight Picture

reduces wear of the sear and sear notch. To time himself in firing a six-round burst, the gunner pulls the trigger straight to the rear, says, FIRE A BURST OF SIX, and then releases the trigger.

Trigger Manipulation and Zeroing

The rear-sight assembly is adjusted until the strike of the rounds coincides with the point of aim at a given range, and then the elevation scale is adjusted to reflect that range. The procedures for zeroing the machinegun on the basic range follow:

• Set the sights. To establish a common starting point when zeroing on the basic range, the gunner sets the elevation scale at 500 meters and alines the windage index by placing zero windage on the rear-sight assembly.

9 Fire three rounds. Given a fire command, on the command FIRE, the gunner fires three single rounds (one round at a time) to establish a shot group- He uses the same sight alinement and sight picture each time he fires. No adjustments on the rear-sight assembly are made until he has fired three rounds. The shot group should be small enough to show where the center of the group is in relation to the aiming paster.

• Correct for deflection. If the center of the shot group is to the left or right of the point of aim, the gunner must correct for deflection. To correct for deflection, the gunner turns the windage knob, moving the rear sight in the direction of the desired change. Since the distance to the target is 1,000 centimeters {10 meters), a 1-click or 1-mil adjustment moves the point of aim 1 centimeter. For example, if the gunner notes that the center of the shot group is 2 centimeters (2 aiming pasters) to the right of the aiming point, he turns the windage knob 2 clicks, moving the rear sight in the direction of the aiming paster (to the left).

• Correct for elevation. If the center of the shot group is above or below the black aiming paster, the gunner must correct for elevation. To correct for elevation, the gunner turns the elevation knob, moving the rear-sight slide in the direction of the desired change. A 1-click adjustment on the elevation knob equals a 1/4-mil change, or 4 clicks equal a 1-mil change. Since the distance to the target is 1,000 centimeters (10 meters), a 4-click (1-mil) adjustment moves the point of aim 1 centimeter.

• Confirm- After making corrections for deflection and elevation, the gunner raises his hand and is issued a confirming round. If he misses his point of aim, he treats this hit as the center of a three-round shot group, makes further adjustments as necessary, and is issued another round to confirm. He continues this procedure until he hits the point of aim, the black aiming paster. If one of these shots is a wild shot, it should be disregarded, and another shot should be fired to confirm the sight adjustment.

• Adjust the elevation scale and record the deflection. The gunner loosens the elevation scale screw and moves the adjustable elevation scale up or down until the 500-meter graduation coincides with the top left edge of the rear sight slide. He then tightens the elevation scale screw and records the deflection (windage) for future reference.

Traverse and Search the Machinegun.

Since machinegun targets usually have width and depth, the gunner must move the gun to distribute fire throughout the target area.

Traverse

This is moving the muzzle of the gun to the left or right to distribute fire laterally. With the bipod-mounted gun, this is done by selecting successive aiming points in the target area. The gunner makes minor changes in direction by shifting his shoulders slightly to the right orleft. To make major changes in direction, the gunner moves his elbows and realines his body to remain directly behind the gun.

Search

This is moving the muzzle of the gun up or down to distribute fire in depth. It is done by selecting successive aiming points in the target area. To make changes in elevation, the gunner moves his elbows closer together to lower the muzzle or farther apart to raise the muzzle.

Observe and Adjust Fire. Gunners must be taught to observe and rapidly adjust their fire.

Machinegun fire is observed by noting the strike of the rounds in the target area, by observing tracers in their flight, or in the case of the 10-meter range, by noting the holes made in the target Assistant gunners should also observe fire and assist in the adjustment of fire-

To adjust fire when firing the hi pod-mounted gun, gross errors in range are corrected by adjusting the rear-sight slide to obtain the correct range setting. Minor errors are corrected by the use of the adjusted -aiming-point technique.

Opera te with Speed. Gunners must be able to deliver fire on a target with speed, but they must first be proficient in obtaining an accurate initial burst, traversing and searching, and observing and adjusting fire. Proficiency is never sacrificed for speed.

RANGE FACILITIES

A standard basic range for bipod training should consist of the following:

Firing Line

A firing line long enough to emplace 100 or more rnachineguns, allowing approximately 3 meters between positions. For control, each position should be numbered.

Targets

A target line 10 meters in front of the firing line. The machinegun marksmanship target is a paper target pasted onto target cloth which is stretched over a wooden frame. One target is set up for each position and is numbered to correspond with the number of the position.

Instruction Site

Bleachers to the rear of the firing line.

Control Tower

A control tower located to the immediate rear and center of the firing line.

The following list includes the minimum personnel required to operate a basic (10-meter) range.

# Personnel

One officer in charge. One safety officer. One principal instructor.

One alternate principal instructor. Ordnance personnel. One NCO in charge.

Medical personnel.

One group instructor per 40 to 50 soldiers.

One assistant instructor per 10 soldiers.

Two demonstrators (one gunner and one assistant gunner).

One ammunition NCO.

One ehartman.

One tower operator.

The following list includes the minimum equipment required to operate the range-More equipment may be required by range regulations, safety regulations, and unit

SOP.

# Equipment

One public address system.

Six rnachineguns per 10 soldiers (one gun is used as a reserve for each five guns on line).

One cleaning rod per assistant instructor.

One spare-barrel case per two lanes-

One screwdriver per two guns.

One machinegun marksmanship target per soldier. (One section for bipod firing, one section for tripod practice, one section for record practice, and one section for record firing.)

Twelve stopwatches (two in the control tower and two per group instructor).

One scorecard per soldier--DA Form 85.

Medical evacuation capability.

Communications equipment. Wire or radio as required to operate the range.

Targets. Basic machinegun marksmanship target NSN 6920-00-078-5728. One per firer.

One asbestos glove per two weapons.

One M60 tripod per lane. Spares should be available.

One M60 pintle per lane. Spares should be available.

One M60 traversing and elevating mechanism per lane. Spares should be available.

SCORECARD—DA FORM 85

SCORING

BASIC RANGE

BONUS- 2 POINTS FOR EACH SCORING SPACE HIT.

EXERCISE- 1 POWT WILL BE SCORED PER

MT TO A MAXIMUM OF 6 POINTS PER SCORING SPACE

FIXED EXERCISE- NOT SCORED

TRANSITION

TARGET ENGAGED Q

TARGET HIT

TARGET HIT

10 POINTS WILL BE SCOflED FOR EACH TARGET HIT.

NO SCORE IS ALLOWED UNLESS ALL TARGETS HAVE 8E£N ENGAGED WITHIN THE PRESCRIBED TIME LIMIT

" M60 QUALIFICATION OR FAMILIARIZATION.

- it S GOVERNMENT PAINTING OFFICE 1 9ÊÎ OF A61«S9

MACHINE GUN MARKSMANSHIP

For un nf thw form, see FM 23-67: lb» propocrtmt ftgcrvcv is tfifr USA TRAOOC

SCORE CARD COURSE M&0 CAL 30

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SERVICE NUMBER/SSAN

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practice

BONUS

SCORE

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RECORD

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The following display charts and mock up, (which can be provided by the local

TASC). can be incorporated in all instruction on bipod marksmanship training:

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