105×617mmR

The 105×617mm (4.1 inch), also known as 105×617mmR, is a common, NATO-standard, tank gun cartridge used in 105 mm guns such as those derived from the Royal Ordnance L7.

The 105×617mmR cartridge was originally developed from the 84 mm (3.3 in) calibre Ordnance QF 20-pounder 84 × 618R cartridge as part of the development of the L7 105 mm rifled gun.

Ammunition

Armour-piercing discarding sabot (APDS)

Armour-piercing fin-stabilized discarding sabot (APFSDS)

There are different ways to measure penetration value. NATO uses a criterion that 50% of the shell has to go through the plate, while the Soviet/Russian standard is higher as 80% had to go through. According to authorities like Paul Lakowski, the difference in performance can reach as much as 8%

High explosive anti-tank (HEAT)

High-explosive squash head (HESH)

High explosive (HE)

Smoke shells

Anti-personnel

Illuminating

Gun launched anti-tank guided missile (GLATGM)

105 mm guns using 105x617mm ammunition

• L7-series ( United Kingdom)
• M68-series ( United States)
• M35 ( United States)
• CN 105 F1 ( France)
• CN 105 G2 ( France)
• 10,5 cm Pz Kan 61 (  Switzerland)
• L74 ( Sweden)
• Rh 105-series ( Germany)
• OTO 105 Low Recoil Force Gun ( Italy)
• Cockerill 105HP ( Belgium)
• GT 3 ( South Africa)
• GT 7 ( South Africa)
• GT 8 ( South Africa)
• FRT L51 ( Argentina)
• Type 94 ( China)
• Type 15 ( China)
• IWS ( United Kingdom)

Notes

References

• Direct Fire Ammunition Handbook 2019 Archived 2021-07-12 at the Wayback Machine, Project Manager Maneuver Ammunition Systems