Shrapnel

This booby-trap consists of a shotgun discharging shrapnel, which is propelled by a black, powder charge. The firing device is orange fuse ignited by a percussion igniter, actuated by means of a trip-wire.

The weapon is capable of propelling the shrapnel at high velocity for a distance of about 50 yards.

Preparation of booby-trap.

(a) Examine the propel1ant charge, making sure that the orange fuse is firmly secured in metal container.

(b) Examine the igniter to see that the pin is pushed well home and the ends of the pin opened out.

(c) Decide on the alignment of the gun. The charge has considerable lateral spread at distances beyond 25 yards. This must be given consideration in deciding safety zones.

(d) Drive in the near angle-iron recoil picket on the reguired line of discharge;

(e) Place the empty barrel in position and drive in two front pickets.

(f) Align and drive in the pegs to carry the trip-wire. The trip wire must be on the line of the reguired discharge of direction.

(g) Secure the trip-wire to the end peg, unreel the wire and run it out to the gun position, temporarily securing it to one of the front recoil pickets, making use of natural supports, shrubs, bushes, boulders, etc., to keep the trip-wire clear of the ground.

Loading the gun.

(a) Lower the metal charge container into the barrel, making sure that the orange fuse lies snugly against the inner side of the barrel. The end of the orange fuse should project and be bent clear of the muzzle.

(b) Ram a ball of paper down the barrel with a suitable ram-rod, taking care not to discharge or damage the orange fuse. The wad acts as a gas check and also holds the metal charge container in position.

(c) Pour in the shrapnel filling. This should extend about 12" along the barrel from the lower wad. Also ram another wad of paper on top of the shrapnel.

Do "ot at this stage connect the igniter.

(d) Place the loaded gun in position. The closed end of the barrel should fit snugly against the angle-iron picket, muzzle end of the gun. between the two front pickets,

(e) Arrange the gun to give an elevation angle of approximately 5° .

(f) Check the alignment.

(g) Secure gun in position by binding the two front pickets together over and under the barrel.

(h) Check again for alignment and adjust as reguired.

(i) Connecting up. Work behind the gun.

Bind the percussion igniter in posi-

tion. This must be arranged so that the pull on the pin is in line with the pin's length, as there must be no tendency for the pin to bend, whilst being withdrawn.

The igniter should be secured to one of the front pickets. Connect the tripwire to the pin of the igniter, adjust its tension so that the pull is insufficient to withdraw the pin. Cut off a half inch from the exposed end of the orange fuse and conceal the gun.

Insert the orange fuse into the snout of the igniter and crimp into position. Seal off all gas escapes with luting. Close the end of the split-pin, and push the pin across the head of the igniter.

(j) The booby-trap is now set. Leave the site by passing behind the closed end of the barrel.

(k) Make all final adjustments from behind the muzzle of the gun.

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