Welcome to the Inert Ordnance Collectors.
Results 1 to 9 of 9
  1. #1
    Premium Member
    Join Date
    Dec 2013
    Location
    Bergen, Norway
    Posts
    114
    Thanks
    7
    Thanked 111 Times in 55 Posts

    Help to identify an unknown shell and text-markings

    The father of a friend found this shell in a german infantry-campsite in may 1945. As it's obviously of allied origin, and most likely not from german WW2-use I'm a bit puzzled.

    Anyway: My friend would like to know what type of grenade this was for, and also the meaning of the text found on the case:

    303 BC RMX 015
    1 36 SM
    77 ACX 38
    Vo 400
    TG
    A2
    CHARGE M


    The inner-diametre of the opening (calibre) is 3". Supposedly, there are no markings on the bottom of the case (I have requested him to examine it once more though).


    3-2.jpg3-1.jpg

  2. #2
    Senior Member
    Join Date
    May 2010
    Location
    UK
    Posts
    187
    Thanks
    38
    Thanked 139 Times in 90 Posts
    From the markings, French by the look of it.

    As you say it's nominally 3", 76.2 cm, as such likely a French 75 mm.

    The case is quite long, so probably a French 75x350R.

    The muzzle velocity (V0) is lower than the standard for the Matériel de 75mm Mle 1897 gun, so maybe this is for the shorter Schneider 75mm Mountain Gun M1919 (Canon de 75 M (montagne) modèle 1919 Schneider [75 mm mle.1919]). That or it's a reduced charge for the latter.

    Both guns were captured by Germany and used by their armed forces.

    I'm sure someone's got far more on it than I have.

  3. The Following User Says Thank You to Eggburt1969 For This Useful Post:

    Natter (21st November 2020)

  4. #3
    Premium Member
    Join Date
    Dec 2013
    Location
    Bergen, Norway
    Posts
    114
    Thanks
    7
    Thanked 111 Times in 55 Posts
    Quote Originally Posted by Eggburt1969 View Post
    From the markings, French by the look of it.
    Many thanks - I'll stick to underwater ordnance in terms of speculating from now :-)

    Any idea of the meaning of the text besides "V0 400"?

  5. #4
    Senior Member
    Join Date
    May 2010
    Location
    UK
    Posts
    187
    Thanks
    38
    Thanked 139 Times in 90 Posts
    Quote Originally Posted by Natter View Post
    Many thanks - I'll stick to underwater ordnance in terms of speculating from now :-)

    Any idea of the meaning of the text besides "V0 400"?
    As mentioned above V0 = muzzle velocity, i.e. the velocity at 0 m from the muzzle. So in this case the gun's nominal muzzle velocity is 400 m/s.

  6. #5
    Premium Member
    Join Date
    Dec 2013
    Location
    Bergen, Norway
    Posts
    114
    Thanks
    7
    Thanked 111 Times in 55 Posts
    Quote Originally Posted by Eggburt1969 View Post
    As mentioned above V0 = muzzle velocity, i.e. the velocity at 0 m from the muzzle. So in this case the gun's nominal muzzle velocity is 400 m/s.
    Yes, that's the one I do know ;-)

  7. #6
    Senior Member
    Join Date
    May 2010
    Location
    UK
    Posts
    187
    Thanks
    38
    Thanked 139 Times in 90 Posts
    Quote Originally Posted by Natter View Post
    Yes, that's the one I do know ;-)
    Well, in reality the term 'muzzle velocity' is a bit of a misnomer. This is because the projectile keeps accelerating for a short distance after it exits the barrel due to the gas outflow behind it. So in reality its peak velocity is slightly forwards of the muzzle.

    The exact point when the projectile starts to decelerates depends on many factors, such as: the muzzle exit pressure; combustion gases; projectile dimensions and mass; atmospheric conditions; etc.; etc..

  8. #7
    Premium Member
    Join Date
    Sep 2014
    Location
    UK
    Posts
    301
    Thanks
    2,343
    Thanked 166 Times in 72 Posts
    3-2.jpg3-1.jpg[/QUOTE]

    Hi Natter, could you post a picture of the head or let us know what the markings are? Thanks.

  9. #8
    Senior Member
    Join Date
    May 2010
    Location
    UK
    Posts
    187
    Thanks
    38
    Thanked 139 Times in 90 Posts
    Quote Originally Posted by Natter View Post
    Many thanks - I'll stick to underwater ordnance in terms of speculating from now :-)

    Any idea of the meaning of the text besides "V0 400"?

    Sorry, I misunderstood your request for some daft reason.

    As to the other markings, only in German.

    75 mm Page 1.jpg75 mm Page 2.jpg

    The German text from second image that covers the image legends is below.

    a = Art der Sprengladung
    b = Firma und Daten der Laborierung
    c = Kennzeichen, Herkunft, Lieferung und Jahr der Herstellung des Sprengstoffs
    d = Lieferungsnummer der Laborierung
    e = Mun. Anstaltsfertigung, wenn ein Strich, dann Industrieanfertigung
    f = Kennzeichen für Einschießgeschoß (reg läge)
    g = Bessemerstahl, wenn „Th" dann Thomasstahl
    h = mit Bodenplatte versehen
    i = Art des Rauch- und Nebelentwicklers (bei Einschießgranaten = Ph—B
    oder NCB, bei Rauchgranaten = Ph—F, O—CS oder Fu—M)
    k = Gewichtsklasse
    l = Gewicht des Entkupferungsmittels
    m = V0 des Geschosses
    n = Lieferungsnummer, Firma und Jahr der Patronierung
    o = Pulvergewicht, Pulversorte und Wert der Stabilität des Pulvers
    qu = Muster der Zündhülse
    r = Konstruktions- bzw. Einführungsjahr
    s = Zeichen für die Art des Materials [Fonte Gußeisen, FA Fonte aciere = Stahlguß, A = acier = Stahl, AL = Gütezeichen für den Guß
    t = Kennzeichnung der Schießübungsgeschosse
    u = Ort und Firma der Zünder, Zündladung usw.
    v = Kennzeichen für Leuchtgeschoß
    w = Zahlenkennzeichen und abgekürzte Benennung des Kampfstoffes
    x = Art des Leuchtspursatzes (TA = Aluminium, TM = Magnesium)
    y - Kennzeichen für Brandgeschoß mit Modellangabe z Kennzeichen für verminderte Ladung

  10. #9
    Ordnance Approved
    Join Date
    Nov 2010
    Location
    FRANCE
    Posts
    2,804
    Blog Entries
    1
    Thanks
    2,883
    Thanked 2,473 Times in 1,082 Posts
    Any Live or Dug ordnance shown by me has been disposed of by EOD personnel .

  11. The Following 2 Users Say Thank You to MINENAZ16 For This Useful Post:

    Eggburt1969 (22nd November 2020), Joerg (23rd November 2020)

 

 

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Back to top