6pdr OQF Mk.III (57 mm)

Description

The 57 mm 6pdr OQF Mk.III is the first tank-mounted version of the British OQF 6-pounder anti-tank gun, being a Mk.II with the L/44 barrel length adapted for tank service. It has excellent reload speed and good ballistic properties, but as with most British guns will lack HE filler in their AP ammunition.

Vehicles equipped with this weapon

• Crusader III
• Valentine IX
• ▂МК-IX "Valentine"
• Cromwell I
• M4A5

General info

The 6pdr fires quickly, accurately, and with good velocity, but due to low calibre and lack of HE filler in armour-piercing shells, you will have to shoot intelligently and precisely to maximise damage to your opponents internal components.

Available ammunition

Penetration statistics
Ammunition	Type of warhead	Penetration @ 0° Angle of Attack (mm)
		10 m	100 m	500 m	1,000 m	1,500 m	2,000 m
Shot Mk.5	AP	101	97	82	66	53	43
Shot Mk.5 HV	AP	108	104	87	70	57	46
Shot Mk.8	APC	110	106	89	72	59	48
Shot Mk.9	APCBC	122	118	101	84	70	58
Shell Mk.10	HE	9	9	9	9	9	9

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile Mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive Mass (TNT equivalent) (g)	Ricochet
							0%	50%	100%
Shot Mk.5	AP	815	2.8	N/A	N/A	N/A	47°	60°	65°
Shot Mk.5 HV	AP	853	2.8	N/A	N/A	N/A	47°	60°	65°
Shot Mk.8	APC	853	2.87	N/A	N/A	N/A	48°	63°	71°
Shot Mk.9	APCBC	801	3.23	N/A	N/A	N/A	48°	63°	71°
Shell Mk.10	HE	655	2.72	0.1	0.1	590	79°	80°	81°

Comparison with analogues

The gun is similar to the Russian 57 mm guns and can be played similarly, but it should be noted that the Russian 57 mm uses ammunition with greater amounts of propellent and as such has better penetration and velocity in general, your advantage over this is a slightly faster reload.

Usage in battles

The gun is low calibre and low damage but features good handling, reload speed and penetration for the battle rating it is found at.

Pros and cons

Pros:

• Good reload speed
• Good velocity
• Good gun handling

Cons:

• No explosive filler
• Low calibre

History

Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: https://wiki.warthunder.com/(Weapon-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />.

Media

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

• reference to the article about the variant of the cannon/machine gun;
• references to approximate analogues by other nations and research trees.

External links

Paste links to sources and external resources, such as:

• topic on the official game forum;
• encyclopedia page on the weapon;
• other literature.

USA tank cannons
20 mm	M139
25 mm	LW25 · M242
37 mm	M3 · M5 · M6
57 mm	M1
75 mm	M2 · M2 Howitzer · M3 · M6 · M1897A4 · XM274
76 mm	M1 · M7 · M32 · T185E1
90 mm	M3 · M3A1 · M36 · M41 · M54 · T15E1 · T15E2 · T54 · T208E9
105 mm	M4 · M68 · M68A1 · M68A1E8 · T5E1 · T5E2 · T140E2 · T140E3 · XM35
106 mm	M40A1C
120 mm	M58 · M256 · T53
152 mm	M81 · M162 · XM150E5
155 mm	M185 · T7
165 mm	M135
	Foreign:
20 mm	Rh202 (Germany)
57 mm	6pdr OQF Mk.III (Britain) · ZIS-2 (USSR)
105 mm	Sharir (Israel)
120 mm	IMI MG251 (Israel)

Britain tank cannons
30 mm	L21A1
40 mm	QF 2-pounder
47 mm	Ordnance QF 3-pounder
57 mm	6pdr OQF Mk.III · 6pdr OQF Mk.V
75 mm	OQF Mk.V
76 mm	OQF 3-inch Howitzer Mk I · OQF 3in 20cwt · QF 17-pounder
77 mm	OQF Mk.II
84 mm	20pdr OQF Mk.I
94 mm	28pdr OQF · 32pdr OQF · OQF Mk.II
95 mm	Howitzer, Tank No.1, Mk.I
105 mm	LRF · Royal Ordnance L7A1
120 mm	Ordnance QF Tk. L1A2 · Ordnance BL Tk. L11 · L11A5 · L30A1
165 mm	ORD BL 6.5in L9A1
183 mm	QF L4A1
	Foreign:
25 mm	M242 (USA)
37 mm	M5 (USA) · M6 (USA)
75 mm	M2 (USA) · M3 (USA)
84 mm	kan Strv 81 (Sweden)
105 mm	Sharir (Israel)
120 mm	Rh120 L/55 A1 (Germany)
125 mm	2A46M-5 (Russia)
155 mm	M185 (USA)
	South Africa
20 mm	GI-2
76 mm	GT-4
90 mm	GT-2
105 mm	GT-3 · GT-7 · GT-8
155 mm	G6 L/45