This small arms ammunition is fired from the Cap.50" Spotting
rifle M48 which is mounted co-axially with 106mm RCL gun and
operated with the same trigger mechanisam.The spotter rifle
is used to predict the correct range and trejectory and ensures
a positive hit on the target i.e enemy tank by the Round 106mm
RCL HEAT.Firer gets great tactical advantage of .50" rifle for
accurate lying of the RCL Gun for first round hit on the enemy.
This ammunition is similar to American Cartridge Spotter Tracer
Calibre .50" M48. The design of this ammunition is similar to a
small complete round.It includes cartridge case,percussion cap,
propellant charge and bullet with spotting and tracer
compositions.
The cartridge case of the brass is of rimless type, formed cap
chamber at the base provided with two flash holes and an anvil.
The mouth of the case coned onto the body of the bullet.
percussion cap is boxer type, consists of a brass cap in
which loaded with a cap composition(i.e FA 956)in form of pellet
which is lead styphnate based.The propellant charge is made up
of Nitrocellulose, Diphenylamine, Centralite and Potassium
Sulphate or Potassium Bitartrate.
The bullet is of composite type and streamlined.It consists of
three parts which are contained in outer envelope of
copper opened at top . The first part consists of coned
aluminium sleeve which is closed at the top and is positioned
within the ogive of outer copper envelop e. Aluminium sleeve
is assembled with spotter composition SR 379B and cap igniting
.Second part is lead core with a step at the upper end to take
the end of the aluminium sleeve ,is pressed into the envelope.
Third part is steel base which is bored at the lower end, is
fitted below the lead core.The recess of the base is filled
with tracer composition {SR 390=0.324 grams], booster charge
[SR 390 + sr 370 =0.292 grams]and primary composition [SR 370 =
0.194 grams].
This ammunition is manufactured to Governament of India,Ministry
of Defenc,to Specification No.CIA 4201and Drawing No.IQV 24 GF.
Specifications
PHYSICAL CHARACTERISTICS
- Total length of ammunition : 114.81 mm(maximum)
- Total mass of ammunition : 107.00 +/- 1.99 grams
- Mass of bullet : 53.135 +/-0.648
- Mass of case : 45.07 grams
- Mass of cap : 0.750 grams[approx]
- Explosive fillingin cap : 0.085 to 0.105 grams
- Explosive filling in bullet : 2.8215 grams
- Propellant[ACM] : 7.00 grams[approx]
- Net explosive content : 9.9265 grams
PERFORMANCE CHARACTERISTICS
Muzzle velocity : 535 +/- 9.1 m/s
Max.range for visibility of spotter smoke : 1100 metres
SPECIAL FEATURES
This ammunition is fired only to save costly RCL ammunition.
QUALITY
The raw materials used for componets are tested by independent
Quality Assurance Department.During manufacturing stage, quality
surveillance by both producer and army's representatives are
provided All the major components i.e case cartridge, bullet
filled,cap filled,and propellant are test-fired and only passed
proof components are taken into final assembly of the ammunition.
The complete round also proved for
[a] Velocity [b] Pressure[c] hangfire [d]consistancy
[e]tracer functioning [f] spotter functioning
[g] rough usage test.
SAFETY
The cap being percussion type,gets intiated only if get blow.The
ammunition is therefore safe during manufacture,transit and
storage
RELIABILITY
The spotter round adequately predicts the correct range and
thetrajectory and ensures a positive hit on the target by RCL
HEAT round fired.
SHELF LIFE
The shelf life of the ammunition is 5 years.
PACKING
90 rounds are packed in 9 cartons and these cartons are packed
in one steel box.4 such steel boxes are packed in one steel
carrier.
STOWAGE DIMENSION
Packing steel box size : 311x156x196 mm
Packing outer carrier size : 677x327x205 mm
Gross weight outer package : 59.4 kg
Net weight : 38.52 kg
Volume of outer package : 0.045 Cu.metre
HAZARD CLASSIFICATION
Compatibility group : S
Hazard division : 1.4
Fire fighting classification : 4
U N no. : 0012
IMDG code page no. : 1169
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