Ch-51M (57 mm)

Description

The mounting has a very limited amount of gun depression and traverse due to the small size of what it is mounted upon, however, the gun itself has a fairly fast reload.

Vehicles equipped with this weapon

• ASU-57

General info

Tell us about the tactical and technical characteristics of the cannon or machine gun.

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
BR-271SP	APBC	142	139	125	109	96	84
BR-271M	APCBC	155	151	135	118	102	89
O-271	HE	12	12	10	8	6	5
BR-271N	APCR	159	155	140	123	108	94

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%
BR-271SP	APBC	975	3.14	-	-	-	48°	63°	71°
BR-271M	APCBC	1,020	2.8	1.2	9	20.02	48°	63°	71°
O-271	HE	695	3.72	0.4	0.1	220	79°	80°	81°
BR-271N	APCR	1,125	2.4	-	-	-	66°	70°	72°

Comparison with analogues

Give a comparative description of cannons/machine guns that have firepower equal to this weapon.

Usage in battles

Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.

Pros and cons

Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.

Pros:

Cons:

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 If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: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;
• other literature.