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  1. #1
    Orita is offline Erfahrener Benutzer User
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    Default 75MM & 57MM Shell Cases

    - My picture from below [it will be posted soon] shows 2 big caliber fired shell cases from my collection: 75X350R brass case [left] and 57X305SR steel case with a .50" Browning dummy cartridge [12.7X99] at right for scale. --- The rimmed 75mm brass shell case is 350mm tall and it is headstamped: "75MM.M18" over "LOT C.B. & C.Co.-18" over "1943" over an ordnance stamp. The fired primer is marked: "ROP-5-23 43 M31A2". The "M31A2" primer was made by "Redstone Arsenal" [AL], USA and and it is a 150-grain "Super Charge" percussion primer. The 75X350R brass shell case was made by "Clark Brass & Copper Co.", Elk Grove [IL], USA [see the maker's mark "C.B. & C.Co."]. I know that during WW2 the US made 75X350R rounds were used by the 75mm guns mounted on the M3 and M4 Sherman medium tanks. Do you know other US guns from WW2 which used the 75X350R rounds????? --- The semi-rimmed 57mm steel shell case is 305mm tall and it was used by the "M18" or "M18A1" recoilless rifle [gun] also known as "RCL". This 57X305SR perforated steel case is of US manufacture and it has a total of 400 holes, each hole has a diameter of 7mm. The impressed headstamp markings are: "57MM M30 A1B2", flaming bomb stamp, "Lot N.S. 8-1 1950". There is also the mark "7-13" which was covered by 3 X marks like "XXX". Do you know which US company using the mark "N.S." manufactured in 1950 this 57X305SR steel case????? The fired percussion primer is marked: "KOP-36-6", "M46B" [or "M46B2"] and "1951" [the year of manufacture]. The maker's mark "KOP" from the primer shows as manufacturer "Kingsbury Ordnance Plant", La Porte [IN], USA. If you can give me more information about these 2 shell cases [75X350R and 57X305SR], I'll be glad to hear from you. Thanks in advance, Orita 11/12/06

  2. #2
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    Default

    Pictures

  3. #3
    Join Date
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  4. #4
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    Default

    Quote Originally Posted by kz11gr
    Pictures
    ...jo, here it is...
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  5. #5
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    Hi

    I've found this link about the us / french 75mm gun


    http://canonde75.free.fr/canon_us.htm



  6. #6
    Orita is offline Erfahrener Benutzer User
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    Default

    - Many thanks for the very interesting French site you posted [I'm glad I know French very well]. I forgot to mention in my lines which started the topic that the old French "75" field gun of the 19th century had used the same 75X350R shell case only with different loadings. My 75X350R brass shell case [see at left in my photo from above] is of US manufacture from 1943. Orita 11/13/06

  7. #7
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    Quote Originally Posted by Orita
    - Many thanks for the very interesting French site you posted [I'm glad I know French very well]. I forgot to mention in my lines which started the topic that the old French "75" field gun of the 19th century had used the same 75X350R shell case only with different loadings. My 75X350R brass shell case [see at left in my photo from above] is of US manufacture from 1943. Orita 11/13/06
    Hi Orita

    i've found this for you on ebay . + pictures of the 57mm shell .

    http://cgi.ebay.com/World-War-II-Mor...QQcmdZViewItem


  8. #8
    Orita is offline Erfahrener Benutzer User
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    - The E-Bay item [shell case for recoilless rifle and projectile] was sold for 91 US dollars. The seller gave a bad description of the item but the shell case was rimmed and I'm 100% sure it was the model 57X305R M30 A1B1 [my shell case is semi-rimmed, the model 57X305SR M30 A1B2]. Unfortunately the headstamp markings were not mentioned. Thanks anyway, it's been interesting to see this item. Orita 11/14/06

  9. #9
    Orita is offline Erfahrener Benutzer User
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    - Yes, that is the photo of the 57mm recoilless steel rimmed case and the projectile. I only have the 57X305SR case, not the projectile. --- There are 3 different US made shell cases for the 57mm recoilless round: A] 57X305R M30 A1B1 [see it above, it's the rimmed case]; B] 57X305SR M30 A1B2 [it's the case I have, the semi-rimmed one, see my picture posted earlier by Mhistory]; C] 57X305SR M30 A1B3. --- There are 4 different US made projectiles for the 57mm recoiless round: A] 57mm M306A1 HE [High Explosive]; B] 57mm M307A1 HEAT [High Explosive Anti-Tank]; C] 57mm M308A1 WP [White Phosphorous]; D] 57mm T25E5 Cannister. Orita 11/15/06

  10. #10
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    The 57mm shell :
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