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Royal Ordnance 105mm L7 L/52 Rifled Tank Gun

Overview

Work began in 1950s and first trials were in mid-1956. Later that year a T-54A, driven by Hungarians drove into the British embassy in Budapest. After a brief examination of the tank's armour and 100mm gun, British officials decided that the Ordnance QF 20 Pounder was apparently incapable of defeating it - hence a need for this 105mm gun. The L7 was designed to fit the same space of that of a 20 Pdr, allowing existing tanks equipped with 20 Pdrs to upgrade to the L7.

The L7 succeeded the Ordnance QF 20 Pounder (84mm) and superseded by the 120mm Royal Ordnance L11

105mm Royal Ordnance L7

Sketch of an L7 cannon

Specifications

It is unknown from what model these stats come from.

  • Weight: 1282kg (2826lb)
  • Length: 5.89m (19.3ft)
  • Barrel Length: 52 calibres (L/52)
  • Calibre: 105mm
  • Rate of Fire: 10 rds/minute (maximum)

Ammunition

DM13 APDS

Armour Piercing Discarding Sabot

M392A2 APDS

Armour Piercing Discarding Sabot

M546 APERS-T

Anti Personnel Tracer

  • This shell is loaded with 8000 8-grain steel flechettes.
  • Velocity: 1475m/s

APFSDS

Armour Piercing Fin Stablized Discarding Sabot

  • Penetration >530mm @ 0°

Canister

Canister, a shotgun essentially

HE

High Explosive

  • Velocity: 1174m/s

HEAT

High Explosive Anti Tank

DM12 HEATFS

High Explosive Anti Tank Fin Stabilized Sabot

M456 HEATFS

High Explosive Anti Tank Fin Stabilized Sabot

DM502 HESH

High Explosive Squash Head

  • The shell is loaded with thin metal shells filled with plastic explosive, upon impact the plastic explosive splats against the target and exploding, causing a larger shockwave than a normal explosive shell would produce.
  • Velocity: 737m/s

M393 HEP

High Explosive Plastic

  • This shell is essentially a HESH shell, but US calls in HEP.
  • The shell is loaded with thin metal shells filled with plastic explosive, upon impact the plastic explosive splats against the target and exploding, causing a larger shockwave than a normal explosive shell would produce.
  • Velocity: 737m/s

Smoke-White Phosphorus Incendiary

TP

Target Practice

TPDS

Target Practice Discarding Sabot

Variants

  • L7A1
  • L7A3
  • M68A1E4
  • KM68A1
  • Type 79
  • Type 81
  • Type 83
  • FM K.4 Modelo 1L
  • Denel GT-7

Usage

  • Centurion
  • Olifant
  • EE-T1 Osório
  • Leopard 1
  • M1 Abrams
  • M1IP Abrams
  • M47E1 Patton
  • M47E2 Patton
  • M48A5 Patton
  • M60 Patton
  • M1128 Mobile Gun System
  • K1 Type 88
  • Merkava I
  • Merkava II
  • OF-40
  • CM11 Brave Tiger
  • Panzer 61
  • Panzer 68
  • Stingray
  • Stridsvagn 103
  • T-54 Tiran-4Sh
  • T-55 (Egypt & Israel mods)
  • TAM
  • Type 74 (Japanese)
  • Vickers MBT
  • Vijayanta
  • Ramses II
  • Type 88 (Chinese)

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