Monday, 7 September 2015

Soviet Explosive Ordnance - 85mm and 100mm Projectiles



85mm and 100mm Artillery and Tank Gun Projectiles


85mm Complete Round, Fixed, Frag, UO-365K


This fragmentation round is fired from the 85mm anti-aircraft gun M1939, from the 85mm tank guns M1943 (D-5T85) and M1944 (ZIS-S53), from the 85mm self-propelled gun M1943 (D5-S85 and D5-S85A), and from the 85mm divisional gun M1945 (?).  It is possibly also fired from the 85mm AA gun M1944.  It is used against personnel, equipment, and aerial targets.
 
The KTM-1 fuze is used in the O-365K fragmentation projectile of this round.
 
The following complete rounds are variants of the illustrated round: UO-365, with an O-365 projectile using a T-5 or T-11 time fuze; and UO-365M, with an O-365M projectile using a VM-2 time fuze.  These variants differ from the UO-365K primarily in their use of time fuzes and in their markings; they are otherwise very similar to the UO-365K in their external appearance, and they are fired from the same weapons.
 
Characteristics
Caliber: 85mm (3.35 in)
Weight of complete round: 15.1kg (33.22 lbs)
Weight of projectile, as fired: 9.58kg (21.11 lbs)
Weight of propellant, w/o igniter: 2.63kg (5.79 lbs)
Type of projectile filler: TNT
Weight of projectile filler: 0.78kg (1.71 lbs)

 
Packaging


The illustrated packing box has a capacity of four rounds, with an estimated gross weight of about 76kg (167 lbs).  This ammunition also may be found in three-round packing boxes.  The ammunition may be packed with or without fuzes.


85mm Complete Round, Fixed, AP-T, UBR-365K

This round is fired from the 85mm anti-aircraft gun M1939, from the 85mm tank guns M1943 (D-5T85) and M1944 (ZIS-S53), from the 85mm self-propelled gun M1943 (D5-S85 and D5-S85A), and from the 85mm divisional gun M1945 (?). It is possibly also fired from the 85mm AA gun M1944. It is used against such ground targets as tanks, armored trains, and armored or reinforced concrete structures.  Its projectile contain a small base cavity filled with high-explosive.
 
The MD-8 fuze is used with the BR-365K armor-piercing tracer projectile of this round.
 
The UBR-365 complete round, with a BR-365 projectile using an MD-8 fuze, is a variant of the illustrated round.  It differs from the UBR-365K in that the projectile is flat-nose and provided with a windshield.  It is fired from the same weapons.
 
The same complete round as shown in the above drawing has been found with projectile BR-365K and fuze MD-8 but with the identification code UBZR-365K stenciled on the cartridge case.  Although this code signifies an API-T complete round, analysis of the actual round discloses that the projectile filler does not differ from that in the UBR-365K round.

Characteristics
Caliber: 85mm (3.35 in)
Weight of complete round: 15.87kg (35 lbs)
Weight of projectile, as fired: 9.21kg (20.3 lbs)
Weight of propellant, w/o igniter: 2.48kg (5.47 lbs)
Type of projectile filler: RDX and aluminum (74/22)
Weight of projectile filler: 0.16kg (0.35 lbs)

Packaging


The illustrated container has a capacity of 3 rounds, with a gross weight of approximately 63kg (139 lbs).  This ammunition may also be found in packing boxes of four rounds.  The gross weight may be shown on the side of the box, in the lower right-hand corner, by the marking БРУТТО 65 КГ (gross weight 65 kg).


85mm Complete Round, Fixed, HVAP-T, UBR-365P


 
This high-velocity armor-piercing tracer round is fired from the 85mm anti-aircraft gun M1939, from the 85mm tank guns M1943 (D-5T85) and M1944 (ZIS-S53), from the 85mm self-propelled gun M1943 (D5-S85 and D5-S85A), and from the 85mm divisional gun M1945 (?). It is possibly also fired from the 85mm AA gun M1944. It is used against tanks, other types of armoured vehicles, and armoured fortifications.
 
Its projectile is a solid shot with a tungsten carbide core.  A windshield is threaded onto the forward end of the projectile body.
 
No fuze is used with the BR-365P high-velocity armor-piercing tracer projectile of this round.
 
 Note.  Stamped numbers shown on the body of the projectile in the above illustration were taken from an actual projectile.  They are believed to identify the projectile by manufacturing plant, lot number, and year of manufacture.  It is possible that one of the four numbers may be a smelt number.  These projectiles also have been found with only three stamped numbers, instead of the four shown above.  The identification code number which is stenciled on all other types of projectiles apparently does not appear on HVAP projectiles.
  
Characteristics
Caliber: 85mm (3.35 in)
Weight of complete round: 11.63kg (25.62 lbs)
Weight of projectile, as fired: 4.95kg (10.92 lbs)
Weight of propellant, w/o igniter: 2.89kg (6.38 lbs)
Type of projectile filler: Tungsten Carbide
Weight of projectile filler: 0.62kg (1.38 lbs)
 
 
Packaging


The illustrated packing box has a capacity of 3 rounds, with an estimated gross weight of 44kg (97 lbs).  This ammunition also may be found in four-round containers.  The gross weight may be stenciled on the packing box, in the form of БРУТТО 44 КГ.  The Cyrillic abbreviation ПОДКАЛ, which means that the packing box contains "subcaliber" (HVAP) ammunition, may also appear on the box.

100mm Complete Round, Fixed, HE, UF-412
 
 
Known guns from which this high-explosive round is fired include the 100mm field (anti-tank) gun M1944 (BS-3), and the 100mm self-propelled gun M1944 (D-10S), which is mounted on the SU-100.
 
This projectile has a relatively thin-walled casing and a large bursting charge.
The RGM fuze is used with the F-412 projectile in this round.
 
Characteristics
Caliber: 100mm (3.94 in)
Weight of complete round: 30kg (66 lbs) (estimated)
Weight of projectile, as fired: 15.9kg (35.05 lbs)
Weight of propellant, w/o igniter: 5.47kg (12.04 lbs)
Type of projectile filler: TNT
Weight of projectile filler: 2.16kg (4.76 lbs)

 
Packaging

 
The illustrated wooden box has a capacity of 2 rounds, with an estimated gross weight of about 77kg (169 lbs).  The gross weight may be stenciled on the box in the form БРУТТО 77 КГ.
 
Note. The dimensions on the above drawing have not been verified.


100mm Complete Round, Fixed, AP-T, UBR-412

 
Known guns from which this armor-piercing tracer round is fired include the 100mm field (anti-tank) gun M1944 (BS-3), and the 100mm self-propelled gun M1944 (D-10S), which is mounted on the SU-100.
 
It is used against such targets as tanks, armoured trains, and armoured or reinforced concrete structures.  Its projectile contains a small base cavity filled with high-explosive.
 
The MD-8 fuze is used with the BR-412 projectile in this round.
 
Characteristics
Caliber: 100mm (3.94 in)
Weight of complete round: 30kg (67 lbs)
Weight of projectile, as fired: 15.7kg (34.59 lbs)
Weight of propellant, w/o igniter: 5.47kg (12.04 lbs)
Type of projectile filler: TNT
Weight of projectile filler: 0.6kg (1.31 lbs)

 
Packaging

 
The illustrated wooden box has a capacity of 2 rounds, with an estimated gross weight of about 77kg (169 lbs).  On one end of the packing box (not shown in the above drawing) are stenciled markings pertaining to the primer.  These markings identifiy the primer by type, lot number, year of manufacture, and manufacturing plant.
 
Note.  The dimensions on the above drawing have not been verified.
 
 
 
Next time: 107mm Projectiles

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