New acquistion of cannon shells. Need some help identifying


#1

Received all of these in one lot with no information.

.60 Cal
This one is aluminum cased with FA 48 headstamp. Projectile is magnetic

Next is steel case with a 20 mm headstamp.(prototype???) Projectile is magnetic.

Next are 3 types of 20mm’s. I have grouped them together by size.
Group1

From top to bottom:

  1. Magnetic projectile, Band marked PMM 1-11 51 20MM T-114, Case is brass, Headstamp FA 51

  2. Magnetic projectile, Band is marked PMC 1-10 51 20MM M99, Case is plated brass, Headstamp is FA 51

  3. Projectile is 2-piece (unscrews) forward section is non-magnetic (aluminum?) and stamped NL-239088, rear section is magnetic, Case is steel, headstamp is IS 4-53 20MM MK5. MOD0

  4. Magnetic projectile, Band is marked PMM 1-11 51 20MM T114, Case is steel, Headstamp is ML 1952 20MM-MK5-MOD0

Group 2

From top to bottom:

  1. Magnetic projectile, Case is marked STONER 1952 20MM M21A(rest is unreadable), Band is marked PMC 1-59 52 20MM M99, Case is lacquered steel, Headstamp is 5

  2. Magnetic projectile, Band is marked PMC 1-60 52 20MM M99, Case is steel, Headstamp is PE 52

  3. Same type as (1) Band is marked PMC 1-36 52 20MM M99

Group 3

From top to bottom:

  1. Magnetic projectile stamped LOT 52354-11 8-42, Band-no markings, Case is brass, Headstamp ASC 1942 20MM M21A1

  2. Magnetic projectile marked in white SHOT A.P. M75 WITH TRACER, Band is marked MS-54-43 20MM M75-PA, Case is brass, Headstamp is GMS 1943 20MM M21A1

Group 4

Magnetic projectile marked in white FA-E 430 T61E1, Band is marked MAT 5-8 45 20MM M99, Case is brass, Headstamp is FA (Star) 48 (Star)

27mm

Both are identical
Magnetic projectile, Band no markings, Case is brass, belted approx 70mm in length, no headstamp

30mm

Top to bottom:

  1. Forward half of projectile is non-magnetic and rear half is, Band is marked GMI-1-2 30MM T158, Case is brass, belted approx 85mm in length, no headstamp

  2. Forward half of projectile is non-magnetic and rear half is, Band is marked GMI-1-6-1953-30MM T241, Case is brass, belted approx 85mm in length, no headstamp

  3. Forward half of projectile is non-magnetic and rear half is, Band is marked GMI-1-2 30MM T158, Case is brass, belted approx 113mm in length, no headstamp

The 27mm and 30mm look like they are all the same case type???

Last an unknown item.

Case is magnetic, small primer, length approx 50 mm, diameter(body) approx 19mm, diameter(head?) approx 20mm, no markings.

Any information regarding the these would be appreciated.

Thanks


#2

While I’m defiantly NOT a expert on these, I can make a couple of guesses as to some of the items (knowing the case length in MM would help)

1 is the 60 HMG (15.3x116). With the aluminum case, my guess is that it’s an experimental.
That evolved into the (short lived) 20x110 and than into today’s 20x102
There were a couple of other 20x110 rounds, the rimless Hispano-Suzza (USAF) and the Rebated rim Orelkon (USN)

Below, left is a 20x102, 2-20x110 HS (one is a NUE case) and 2-20x110RB Orli’s

Below, 2nd from the right is a 60 HMG

Below is a side by side shot of the 60 HMG and a 20x102 (along with a couple others), and the headstamps on the same cartridges


#3

You might find it useful to check a couple of places on my website:

Ammo data tables: quarry.nildram.co.uk/ammotables.htm

Ammo photo gallery: quarry.nildram.co.uk/tankammo.html

The photo below is from the gallery, and shows rounds used in postwar guns. The first three are in your collection.

20x110 (HS.404: Swiss API), 20x102 (US M39 and M61 Vulcan, GIAT 20M621), 20x110 USN (Mark 11 and 12 aircraft guns), 20x128 (Oerlikon KAA, also used in Meroka CIWS), 20x139 (HS 820 - now called Oerlikon KAD - M139 in US service - and also used in Rh 202, GIAT 20M693 / Vektor GI-2), 20x82 (Vektor GA-1: the MG 151/20, still in production!)

The 27mm round is here, along with other experimentals (and a 23x115 for scale). It was designed to fit in the 20mm M61 aircraft gun with new barrels and chambers:


#4

I split away the answer about the last mystery cartridge on a new thread “Cartridge Heated Soldering Iron”

Pepper


#5

hello
very nice rounds
the 60 cal with alu and steel casing
and the 20x110 with steel case
it is the first time that i see these