EQUIPMENT 106 mm RCL GUN
The 106 mm recoilless gun is a light and rugged weapon capable of firing from the ground or mounted on a jeep. Employed primarily in the anti-tank role for which it is uses the hollow charge HEAT ammunition, it is adaptable to other missions in the battle field. A .50" spotting rifle M8C, mounted coaxially above the RCL, fires special spotter-tracer ammunition enabling accurate laying of the RCL to ensure first round hit on enemy tank/target.
NATURE
Ordnance, RCL, 106/32, IA on Mounting 106/32 IA Recoilless, Anti Tank Weapon Fired from Ground and Car 5 CWT 4 x 4 Jeep
 
Estimated Weight Gun with Breech Mechanism : 113.83 Kgs(250.00 lbs)
Estimated Weight Gun without Breech Mechanism: 86.09 Kgs(189.40 lbs)
C of G (Unloaded & without Breech Mechanism) 2251.07 mm from ME (88.625 in)
C of G Barrel 678.18 mm from BE (26.70 in)
Distance 1" C of R From Breech Face of Barrel :673.18 mm (26.50 in)
From Breech Face of Gun : 678.18 mm (26.70 mm)
Depth of Breech Opening 37.46 mm (1.475 in)
Diameter of Bore 105 mm (4.134 in)
Diameter of Chamber Maximum 5.780 in Taper 0.1 in per inch on diameter
Minimum 4.445 in

LENGTH :
Total (of Ordnance) 3392.0 mm (133.50 in)
Barrel 3332.7 mm (131.21 in)
Bore 3332.7 mm (131.21 in)
Chamber 606.55 mm (23.88 in)
Rifling 2730.5 mm (107.5 in)
Ramming 579.88 mm (22.83 in)
Chamber of face to base of Projectile 579.88 mm (22.83 in)
Travel of Projectile 2726.18 mm (107.33 in)

RIFLING :
System Polygroove Plain Section
Twist Uniform Right Hand, 1 turn in 20 Calibres
No. of Grooves 36
Depth of Grooves 0.94 mm (0.037 in)
Width of Grooves 5.35 mm (0.21 in)
Width of Land 3.81 mm (0.15 in)

BALLISTIC DATA :
Capability (total effective), Bore 1082.8 Cu in (17748.00 C.C.)
Capacity (total effective), Chamber 495.0 Cu in (8111.60 C.C.)
Design Pressure Rated Maximum Pressure : 9300 PSI (4.15 tsi)
Muzzle Velocity (Max in new Gun at 600 F) 503 m/sec (approx 1650 ft/sec)
Maximum Range 3110 M approx. (3400 yds)

RANGE TABLES :
Charges Max. Range Yards Chamber Pressure Expected Muzzle Velocity f/s R.T.M.V. f/s
Full Charge 3400 4.15 tsi max 1650 1650
Rate of Fire    
One round per minute indefinitely. Not more than 5 rounds being fired at the maximum loading speed.

LIMITS :
Probable Life 2500 EFCs
Series between examinations 250 EFCs

QUARTERS OF LIFE
1st Quarter 105 mm to 105.13 mm (4.134 in to 4.139 in)
2nd Quarter 105.14 mm to 105.25 mm (4.140 in to 4.144 in)
3rd Quarter 105.26mm to 105.38mm (4.145 in to 4.149 in)
4th Quarter 105.39 mm to 105.51 mm (4.150 in to 4.154 in)

MOUNTING PARTICULARS :
  On Mounting On jeep
Depression (Maximum) 17 ° Over head 7 °
Over Arms 27 °
Elevation (Maximum) 65 ° 56 °
Traverse Weight 360 ° 270 ° Mounting 106/32, IA-97.0 Kgs (213.0 lbs)

PERFORMANCE :
Maximum Range 1372 metres in ground HEAT Shells
Mobility Max Speed: 90 kmph on road on ¼ ton vehicle
Penetration At Normal 620 mm
At 30 ° 515 mm
At 60 ° 400 mm
 
Contact :
Marketing & Export Division
Ordnance Factory Board
Ayudh Bhawan
Government of India
Ministry of Defence
10A, S. K. Bose Road, Kolkata – 700 001, India.

Tel: 0091-33-2248 9027 / 2248 2103 / 2248 5077-80
Fax : 0091-33-2248 1748/2210 8235
Mail : ofbtrade@dataone.in
http:// www.ofb.gov.in