57 mm round (6 pdr)

I met 57 mm gun’s barrel in Russian museum. Please, see my pics at
talks.guns.ru/forummessage/42/263763.html
posted 17-11-2007 19:30 2 pics
posted 17-11-2007 21:46 1 pic
It’s 4 meters long - over 70 calibers. It’s a different shape at Soviet 57 mm guns: antitank ZIS–2 and tank ZIS-4 (rare).
We tried to find information about close versions of Ordnance QF 6-pounder 7 cwt gun /Valentine tank gun or 57mm Gun M1.
I’d like to get sizes of British/US 57 mm round, including max diameter of cartridge.
Any ideas about the gun itself?

I can’t help. but really like the pictures :-) Thanks!

Jason

Linnet, do you know from which museum those photos came? Where is it?

[quote=“linnet”]I met 57 mm gun’s barrel in Russian museum. Please, see my pics at
talks.guns.ru/forummessage/42/263763.html
posted 17-11-2007 19:30 2 pics
posted 17-11-2007 21:46 1 pic
It’s 4 meters long - over 70 calibers. It’s a different shape at Soviet 57 mm guns: antitank ZIS–2 and tank ZIS-4 (rare).
We tried to find information about close versions of Ordnance QF 6-pounder 7 cwt gun /Valentine tank gun or 57mm Gun M1.
I’d like to get sizes of British/US 57 mm round, including max diameter of cartridge.
Any ideas about the gun itself?[/quote]

linnet,

I have some fired 6 Pdr 7 Cwt cartridge cases which I could measure, would this be useful?

gravelbelly

[quote=“gravelbelly”][quote=“linnet”]I met 57 mm gun’s barrel in Russian museum. Please, see my pics at
talks.guns.ru/forummessage/42/263763.html
posted 17-11-2007 19:30 2 pics
posted 17-11-2007 21:46 1 pic
It’s 4 meters long - over 70 calibers. It’s a different shape at Soviet 57 mm guns: antitank ZIS–2 and tank ZIS-4 (rare).
We tried to find information about close versions of Ordnance QF 6-pounder 7 cwt gun /Valentine tank gun or 57mm Gun M1.
I’d like to get sizes of British/US 57 mm round, including max diameter of cartridge.
Any ideas about the gun itself?[/quote]

linnet,

I have some fired 6 Pdr 7 Cwt cartridge cases which I could measure, would this be useful?

gravelbelly[/quote]
Yes, it would be useful.

[quote=“linnet”][quote=“gravelbelly”][quote=“linnet”]I met 57 mm gun’s barrel in Russian museum. Please, see my pics at
talks.guns.ru/forummessage/42/263763.html
posted 17-11-2007 19:30 2 pics
posted 17-11-2007 21:46 1 pic
It’s 4 meters long - over 70 calibers. It’s a different shape at Soviet 57 mm guns: antitank ZIS–2 and tank ZIS-4 (rare).
We tried to find information about close versions of Ordnance QF 6-pounder 7 cwt gun /Valentine tank gun or 57mm Gun M1.
I’d like to get sizes of British/US 57 mm round, including max diameter of cartridge.
Any ideas about the gun itself?[/quote]

linnet,

I have some fired 6 Pdr 7 Cwt cartridge cases which I could measure, would this be useful?

gravelbelly[/quote]
Yes, it would be useful.[/quote]

linnet,

I have just measured a fired 6 Pdr 7 Cwt cartridge case with the following results:

Length: 440mm
Rim Diameter: 90mm
Rim thickness: 5.9mm
Head diameter: 82mm
Shoulder diameter: 71.5mm
Neck diameter: 59.2mm
Mouth diameter: 59mm
Shoulder height: 360mm
Neck height: 410mm

Remember that these measurements are from a fired case, dated 1942 but they should be good enough to assess whether that barrel is chambered for this cartridge.

gravelbelly

Thank you, gravelbelly

The pic below, from the Ammo Photo Gallery on my website, shows the 6 pdr and the usual Soviet 57mm together:

40x304R (British 2 pdr APSV Mk 1: Littlejohn squeezebore), 45x310R (Soviet 45mm APCR), 50x289R (German 5 cm KwK 38 L/42 Pzgr.40), 50x419R (German 5 cm Pak 38 L/60 Pzgr.40), 57x441R (British 6 pdr APDS), 57x480R (Soviet 57mm APCR)