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gelandangan Super Member
Joined: May 07, 2006 Posts: 6401 Location: Sydney Australia
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Posted: Sat Feb 11, 2012 3:38 am Post subject: Re: 40mm shell -- Bofors? |
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Hahaha, True Bushy.
I am making a little shell holder and a remote drop firing mechanism to try to fire that thing,
The shell would be suspended facing down in a 100x100x3 HRS section. I guess it should be strong enough, since there would not be anything in front of the primer.
_________________ A straight line is the shortest distance between two points.
A smile is the shortest distance between two people.
Do - Not try!
gelandangan.weebly.com/ |
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Vince Site Admin
Joined: May 25, 2005 Posts: 15725 Location: Brisbane AUSTRALIA
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Posted: Sat Feb 11, 2012 5:44 am Post subject: Re: 40mm shell -- Bofors? |
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_________________ Cheers, Vince
Illegitimi non carborundum
(Never let the bastards grind you down)
Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God.
"Nulla Si Fa Senza Volonta."
(Without Commitment, Nothing Gets Done) |
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gelandangan Super Member
Joined: May 07, 2006 Posts: 6401 Location: Sydney Australia
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Posted: Sat Feb 11, 2012 3:22 pm Post subject: Re: 40mm shell -- Bofors? |
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Thanks for concern Vince,
I assure that there is a "breech block" to rest the head , thus the primer is fully supported.
The support is made of a piece of 6mm bisalloy (Oz made armor plate).
Plus we are going to be at least 10 meters away when its going to happen.
_________________ A straight line is the shortest distance between two points.
A smile is the shortest distance between two people.
Do - Not try!
gelandangan.weebly.com/ |
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Bushmaster Super Member
Joined: Jun 12, 2005 Posts: 11395 Location: Ava, Missouri
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Posted: Sat Feb 11, 2012 3:54 pm Post subject: Re: 40mm shell -- Bofors? |
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I want to watch...Can I watch? Please, oh please....
PHOTOS
_________________ I have one nerve left and yer standin' on it...
DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
LIBERTY A well armed sheep contesting the outcome of the vote... |
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gelandangan Super Member
Joined: May 07, 2006 Posts: 6401 Location: Sydney Australia
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Posted: Sat Feb 11, 2012 4:06 pm Post subject: Re: 40mm shell -- Bofors? |
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Of course, photos will be supplied as soon as we can arrange to make the rig.
_________________ A straight line is the shortest distance between two points.
A smile is the shortest distance between two people.
Do - Not try!
gelandangan.weebly.com/ |
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Pumpkinslinger Super Member
Joined: Sep 22, 2007 Posts: 5002 Location: NC foothills
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Posted: Sat Feb 11, 2012 8:17 pm Post subject: Re: 40mm shell -- Bofors? |
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VIDEO!!!
_________________ Mike
"I ain't no better than anybody else, and there ain't nobody better than me!" Ma Kettle |
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Bushmaster Super Member
Joined: Jun 12, 2005 Posts: 11395 Location: Ava, Missouri
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Posted: Sat Feb 11, 2012 9:02 pm Post subject: Re: 40mm shell -- Bofors? |
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VIDEO?? HELL yes!!!
_________________ I have one nerve left and yer standin' on it...
DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
LIBERTY A well armed sheep contesting the outcome of the vote... |
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Elvis Super Member
Joined: Jul 27, 2008 Posts: 9261 Location: south island New Zealand
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Posted: Sat Feb 11, 2012 9:53 pm Post subject: Re: 40mm shell -- Bofors? |
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I think .22 subsonic at 50 yrds.
I too look forward to pictures.
_________________ You shot it You pluck it !
Them who eats the most duck eats the most feathers! |
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MacD Super Member
Joined: Apr 08, 2011 Posts: 1052 Location: Canada
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Posted: Sun Feb 12, 2012 7:19 am Post subject: Re: 40mm shell -- Bofors? |
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Gelandangan
What is the length in mm? I see the head is 62mm and the mouth 40 from your original post.
_________________ La a'Blair s'math n Cairdean
(Friends are good on the day of battle) |
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Joe Boleo Super Member
Joined: Dec 25, 2006 Posts: 427 Location: Pennsylvania
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Posted: Sun Feb 12, 2012 7:43 am Post subject: Re: 40mm shell -- Bofors? |
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Interesting topic. Mere possession of these rounds if they are alive might be considered a "destructive device" in these parts. As such, you might come to the attention of the authorities. Take care...
Joe
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gelandangan Super Member
Joined: May 07, 2006 Posts: 6401 Location: Sydney Australia
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Posted: Sun Feb 12, 2012 5:09 pm Post subject: Re: 40mm shell -- Bofors? |
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MacD wrote: |
Gelandangan
What is the length in mm? I see the head is 62mm and the mouth 40 from your original post. |
311mm is the length of the brass.
_________________ A straight line is the shortest distance between two points.
A smile is the shortest distance between two people.
Do - Not try!
gelandangan.weebly.com/ |
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gelandangan Super Member
Joined: May 07, 2006 Posts: 6401 Location: Sydney Australia
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Posted: Sun Feb 12, 2012 7:55 pm Post subject: Re: 40mm shell -- Bofors? |
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MacD wrote: |
Gelandangan
What is the length in mm? I see the head is 62mm and the mouth 40 from your original post. |
311mm is the length of the brass.
_________________ A straight line is the shortest distance between two points.
A smile is the shortest distance between two people.
Do - Not try!
gelandangan.weebly.com/ |
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English Mike Super Member
Joined: Jan 08, 2007 Posts: 1709 Location: Whitehaven, Cumbria, UK
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Posted: Mon Feb 13, 2012 8:36 am Post subject: Re: 40mm shell -- Bofors? |
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Intended for use in pre WWII Swedish manufactured Bofors then:
Quote:: |
40 x 311R
Rim diameter: 61.8mm
Projectile: HE / 955g
Velocity: 850m/s
1930s Bofors L/60 AA |
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MacD Super Member
Joined: Apr 08, 2011 Posts: 1052 Location: Canada
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Posted: Wed Feb 15, 2012 10:03 am Post subject: Re: 40mm shell -- Bofors? |
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Okay my friend got back to me:
Same as English Mike with a few extra tidbits and possibilities.
40MM Bofors USA gun designation is 40mm/56 Army M1(AA)
Manufacture Date is December 1943
Type is Mk 2 high explosive and the designation makes this a US design shell as does the primer.
The mark in the small triangle may indicate the manufacturer or if it has an anchor that it was made originally for the navy. He says that this doesn't mean it was delivered to the navy as they were interchangeable with ones meant for army guns. If it is an anchor it was most likely produced at the Charlotte North Carolina plant which was managed by the US Rubber Company. All these guns were percussion fired.
He sent me this link to a site that he contributes to on a regular basis.
www.navweaps.com/Weapo...6_mk12.htm
_________________ La a'Blair s'math n Cairdean
(Friends are good on the day of battle) |
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gelandangan Super Member
Joined: May 07, 2006 Posts: 6401 Location: Sydney Australia
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Posted: Wed Feb 15, 2012 2:49 pm Post subject: Re: 40mm shell -- Bofors? |
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Thanks for the info MacD.
================================
Update on the cases:
I put one of the case inside my ultrasonic cleaner with citric acid solution as the cleaning media.
After 30 minutes, I found that a lot of gunk came off the primer and turn the cleaning solution murky black.
i have no conclusion on this.
I slice (carefully) one of the case near the primer to see if I could find out how the primer were attached.
Somehow it seems that the primer is crimped in place rather than screwed on.
Due to some work commitments, we are going cancel machining the breech block on the weekend.
We might try to do this next week instead.
_________________ A straight line is the shortest distance between two points.
A smile is the shortest distance between two people.
Do - Not try!
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