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What caliber are these?

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  • #1
    Pilot
    Member
    • Aug 2008
    • 292

    What caliber are these?





    What calibers are these? My older brother gave them to me and said they're old and they have no value to me other than that they look cool. Two of them are obviously brass and the other looks like steel with some kind of coating, which my guess is that it was military; the inside of that one is also rusted to hell.

    The one on the right has a casing length of 3.9" and the opening where the bullet would be has a diameter of .5" so I looked it up and it is a .50 cal. The one in the middle has a casing length of 4" and the opening has a diameter of .75" and the one on the left has a casing length of 5.4" and the opening has a diameter of 1" (I don't know the name of that opening, if someone could tell let me know that'd be nice).
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    • #2
      CSACANNONEER
      CGN/CGSSA Contributor - Lifetime
      CGN Contributor - Lifetime
      • Dec 2006
      • 44092
      The little one is a 50BMG, i'm willing to guess that the middle one in a 30mm. I'm not sure about the bigger one.
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        • #3
          Tweak338
          Veteran Member
          • Aug 2006
          • 4076
          30mm, 20mm, and .50 ?

            Comment

            • #4
              supersonic
              Calguns Addict
              • May 2007
              • 5864
              Why don't you look on the underside (casehead) of each? That would be a pretty good place to start.

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                • #5
                  Blue
                  Calguns Addict
                  • Oct 2005
                  • 8068
                  Originally posted by Tweak338
                  30mm, 20mm, and .50 ?
                  I think the one in the middle is bigger than a 20.
                  Lord, make my hand fast and accurate.
                  Let my aim be true and my hand faster
                  than those who would seek to destroy me.
                  Grant me victory over my foes and those who wish to do harm to me and mine.
                  Let not my last thought be 'If I only had my gun."
                  And Lord, if today is truly the day you call me home, let me die in an empty pile of brass.
                  sigpic
                  NRA Member

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                    • #6
                      Tweak338
                      Veteran Member
                      • Aug 2006
                      • 4076
                      and the opening is called the "mouth"

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                        • #7
                          Pilot
                          Member
                          • Aug 2008
                          • 292
                          Originally posted by supersonic
                          Why don't you look on the underside (casehead) of each? That would be a pretty good place to start.
                          i was smart enough to check them over for any markings, they have none.

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                            • #8
                              Pilot
                              Member
                              • Aug 2008
                              • 292
                              Originally posted by Tweak338
                              and the opening is called the "mouth"
                              thanks

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                                • #9
                                  Tweak338
                                  Veteran Member
                                  • Aug 2006
                                  • 4076
                                  Originally posted by Blue
                                  I think the one in the middle is bigger than a 20.

                                  .50 next to a 20mm

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                                    • #10
                                      Blue
                                      Calguns Addict
                                      • Oct 2005
                                      • 8068
                                      Originally posted by Tweak338
                                      .50 next to a 20mm
                                      Alright so you may be right . I wonder WTF those things are that I have in my gun safe then, I always assumed they were 20's.
                                      Lord, make my hand fast and accurate.
                                      Let my aim be true and my hand faster
                                      than those who would seek to destroy me.
                                      Grant me victory over my foes and those who wish to do harm to me and mine.
                                      Let not my last thought be 'If I only had my gun."
                                      And Lord, if today is truly the day you call me home, let me die in an empty pile of brass.
                                      sigpic
                                      NRA Member

                                        Comment

                                        • #11
                                          Tweak338
                                          Veteran Member
                                          • Aug 2006
                                          • 4076
                                          Originally posted by Blue
                                          Alright so you may be right . I wonder WTF those things are that I have in my gun safe then, I always assumed they were 20's.
                                          No idea man, but they are big compared to a .50

                                            Comment

                                            • #12
                                              Pilot
                                              Member
                                              • Aug 2008
                                              • 292
                                              well i measured the mouth of the two larger ones, the largest is 25mm and the other is 20mm.

                                              i probably should have measured them in milimeters to begin with >.<

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                                                • #13
                                                  Tweak338
                                                  Veteran Member
                                                  • Aug 2006
                                                  • 4076
                                                  damn, I was wrong

                                                    Comment

                                                    • #14
                                                      Pilot
                                                      Member
                                                      • Aug 2008
                                                      • 292
                                                      thanks guys

                                                        Comment

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