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Found at the bottom of Dads old toolbox.

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Found at the bottom of Dads old toolbox.

Old 22nd Feb 2022, 23:04
  #41 (permalink)  
 
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PDR1 kindly provided a photo of a selection of center punches, and comparing the working end of these punches to the pointy end of our mystery object seems to reinforce the identification as a center punch. It is obvious that something weird is happening at the blunt end, and it wouldn't be the first time that someone "improved" a commercial tool to suit a specific need, so I'm not overly concerned about the short length. When you look at jewelry or gunsmithing or even hobbiest, there is some tiny stuff available. I own one that measures 1 3/4 long. It looks like there is a joint at the blunt end with an attached plate or something similar, but what appears to be a screw is on the wrong side of that joint! Rust obscures, and it would be interesting to see this object cleaned up. As to plumb bobs, Amazon has a big selection, and most are very distinctly different compared to our object. They're massive, and taper smoothly to a sharp point. Oh, and please forgive my North American spelling of centre!!!
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Old 23rd Feb 2022, 10:31
  #42 (permalink)  
 
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Originally Posted by Blacksheep View Post
They have to be replaced and there's very little room to do up the linkage bolt. I got a cheap & nasty "Britool" 3/8th open ended spanner, cut it in half and applied a bend that allowed you to hold the nut without getting your fingers trapped. Being open ended, the spanner came out easily when you were done.
.
I used to hate having to replace the AoA flap switches in the front inboard corners of the wheelwells, on the E3 they were secured by semi circular slot fasteners laughably call Hi-Torque, with about an inch between them and the front wall and the whole thing hidden behind cables and hydraulic lines.

Don't ask me about the co-pilots pitot tube...
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Old 23rd Feb 2022, 10:45
  #43 (permalink)  
 
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I recently built a device that compares 2 pneumatic sources with a static, and sends the results to my phone via Bluetooth. The sole purpose of this is to prove that a ventilation mod works, at which point I'll have no further use for it. I wonder how long that's going to be sat in a cupboard somewhere, and what someone will make of a black box with 3 hose connections and a power cable...
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Old 23rd Feb 2022, 11:49
  #44 (permalink)  
 
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[QUOTE=Toolie;11188476 Oh, and please forgive my North American spelling of centre!!![/QUOTE]

I did - I didn't mention it .

and welcome to the forum, by the way.
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Old 23rd Feb 2022, 12:58
  #45 (permalink)  
 
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Toolie,

As another Calgarian, I welcome you to PPRuNe. Careful, it can become addictive.

I can forgive your accidental use of “center”, but “North American spelling”? Surely you mean “US spelling”?

You should know better, living in a city that has a Centre Street and a Chinook Centre!

I do like pointing out to my American friends, this spelling anomaly in the Big Apple:
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Old 23rd Feb 2022, 18:59
  #46 (permalink)  
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So after a bit of a clean reveals that it is made from two types of metal. Ally and brass perhaps?
The brass section is a little irregular so maybe was originally longer?
No hole in the bottom but there is a small rod of metal of some sort?
Intrigued by the slot.
Now if this is a centre punch then the brass back end wouldn't be an ideal metal.
If it's a plumb bob then there would not be any handle. Slot looks a little thin for a cord?





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Old 23rd Feb 2022, 19:01
  #47 (permalink)  
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Originally Posted by NutLoose View Post
I'll tell you what it reminds me of, a fired..

https://forum.cartridgecollectors.or...3-for-id/17229


Why do you only get a rifling band around the middle?
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Old 23rd Feb 2022, 21:49
  #48 (permalink)  
 
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Originally Posted by munnst View Post
Why do you only get a rifling band around the middle?
The thing is, bullets have elliptical tapers to the points in general but the object in question has a straight taper. It looks rather like a locating pin which has been repurposed.
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Old 23rd Feb 2022, 22:48
  #49 (permalink)  
 
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No doubt in my mind that it is a bullet. 9.53 mm is 0.375 inch which is a standard round diameter. There are bullets with a similar taper here - https://www.midsouthshooterssupply.c...-point-375-dia

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Old 24th Feb 2022, 01:13
  #50 (permalink)  
 
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Some bullet heads have a groove at the point where the case should end. There are ways of making sure the bullet head is held in the case, one is to roll crimp into a groove. Wadcutter rounds used for target shooting usually have the bullet head level with the end of the case and the case is lightly squeezed onto the bullet, but ogival rounds protrude from the case. Large calibre tend to be roll crimped, especially if they are metal jacketed.
​​​​​​The thing that puzzles me is what is the metal? Is it heavy enough to be lead?
(BTW, a bullet consists of a projectile, often called the head, at least in the UK, a case, a primer, propellant, and possibly some inert filler. If what you have there is the projectile, it's only PART of a bullet) I don't know much about military grade munitions, bit I expect someone on here does and will correct me as required.
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Old 24th Feb 2022, 03:38
  #51 (permalink)  
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Originally Posted by Piper.Classique View Post
Some bullet heads have a groove at the point where the case should end. There are ways of making sure the bullet head is held in the case, one is to roll crimp into a groove. Wadcutter rounds used for target shooting usually have the bullet head level with the end of the case and the case is lightly squeezed onto the bullet, but ogival rounds protrude from the case. Large calibre tend to be roll crimped, especially if they are metal jacketed.
​​​​​​The thing that puzzles me is what is the metal? Is it heavy enough to be lead?
(BTW, a bullet consists of a projectile, often called the head, at least in the UK, a case, a primer, propellant, and possibly some inert filler. If what you have there is the projectile, it's only PART of a bullet) I don't know much about military grade munitions, bit I expect someone on here does and will correct me as required.
It doesn't feel like lead. It's quite a hard metal and not easy to score. It doesn't feel like steel. I would go for aluminium or some sort of alloy? I could test it with a magnet.
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Old 24th Feb 2022, 05:42
  #52 (permalink)  
 
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Spot Welder Tip Pencil Types ( Welding Electrodes) | Da Jie Electricity Machinery Industrial Co., Ltd. | B2BManufactures.com - Manufacturers Directory
Spot welder tip?
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Old 24th Feb 2022, 06:26
  #53 (permalink)  
 
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It wouldn't be soft lead but an alloy with antimony. Quite hard, and somewhat shiny when recently cast. Aluminium would feel significantly lighter. Steel bullets do exist, as well, but a steel core surrounded by lead is more common, and will usually have a jacket of a harder material.
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Old 24th Feb 2022, 07:35
  #54 (permalink)  
 
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The brown rust suggests there is iron in the metal, so either iron or a steel of some sort. (When aluminium corrodes, a white 'rust' is formed).

Too short and too blunt to be a centre punch - you would hit your fingers trying to hit it with a hammer - and a centre punch would not have that radial cut near the flat end.

Some sort of locating pin, held in its socket by a spring clip locating in the radial cut? Or possibly an interchangeable pipe reamer tool bit? Although a pipe reamer would need an external housing to fully form the ream, as well as the pin.

Is there any plating on the metal? Stick it in a jar of coke or Evaporust overnight, and show us the result.

Edit, sorry, I had not seen posts #46 and #49. Looks like some copper in the middle part?

If it is a standard ammunition diameter, is it perhaps a firing pin from a gun - hence the locating slot to enable easy replacement? (I don't know what firing pins look like !)
.

Last edited by Uplinker; 24th Feb 2022 at 07:52.
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Old 24th Feb 2022, 11:52
  #55 (permalink)  
 
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Originally Posted by Piper.Classique View Post
(BTW, a bullet consists of a projectile, often called the head, at least in the UK, a case, a primer, propellant, and possibly some inert filler. If what you have there is the projectile, it's only PART of a bullet)
There are numerous on-line references that define bullet as the projectile. Can you please cite any reference that defines bullet as being the entire cartridge?
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Old 24th Feb 2022, 12:53
  #56 (permalink)  
 
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Originally Posted by munnst View Post
Why do you only get a rifling band around the middle?
Rifling is not straight: it is in a spiral in the barrel - thus cut into the bullet/shell - to spin the projectile and stabilise it.
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Old 24th Feb 2022, 15:26
  #57 (permalink)  
 
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Originally Posted by EXDAC View Post
There are numerous on-line references that define bullet as the projectile. Can you please cite any reference that defines bullet as being the entire cartridge?
Nope. But if you want something that goes bang in your gun and chucks out a lump of lead that's what you will usually ask for in the shop. I only know this from shooting and loading ammunition. Not read any scholarly texts, only stuff about how to make ammunition and shoot it. Just know what things are called when I order them, which works for me and my suppliers. Anyway, since when was the internet a reliable source of information?

For those who don't play with noisy toys
Case
Primer
Propellant
Projectile
When correctly assembled can be put into a gun and fired. Or hit with a centre punch and fired if held in a vise. Though I don't recommend this.
Shotgun cartridge
Case
Primer
Wad
PropellantShot
Ditto. Give the primer a bang (generally with the firing pin) and it sets fire to the propellant. The hot gas this produces sends the bullet (see, I said it too. You are probably right but I don't want to admit it because you sound so stuffy) into the barrel of the gun, where the rifling gives it a spin which stabilises its flight. Eventually it will hit something, in my case I hope the black bit of a paper target. All the other bits stay around, with the case and spent primer being removed from the gun, either by some automatic mechanism or by the shooter, and the combustion gases dissipating.
The projectile is the bit that hits the target. Or something else if the gun is not correctly aimed. Same principle with a shotgun round, but instead of one lump of metal a lot of little metal balls go down a smooth barrel and spread out on their way to the target. There are differences in propellants, choose according to what you want to shoot and the calibre of your weapon, how far away your target is and what is made of. Also bullet heads and shot can be made from varying materials and with different flight profiles. Cases can be made from a lot of different materials, but brass is one of the more common ones for rifled weapons, plastic for shotguns.
Rockets are another thing altogether, as is gunpowder (aka black powder)
And that picture looks very much like a projectile with some sort of jacket and maybe stuck to a bit of its case. That groove looks like where the roll crimp should go.
I can't believe I just spent ten minutes of my life writing this. It's just a bit of junk in the bottom of an old tool box. And yes, probably .303.

Last edited by Piper.Classique; 24th Feb 2022 at 15:28. Reason: Formatting
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Old 24th Feb 2022, 16:43
  #58 (permalink)  
 
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Piper
I'm deviating from the thread here, but hope you don't mind. In French, "fusil de chasse " could - linguistically at least - be either a shotgun or a rifle, but is it ? When reading the newspaper it seems to be used interchangeably, but journalists a re terribly unreliable; I don't know if you are French and therefore able to help, but your preceding treatise on ammunition made me think it would worth a try. TIA
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Old 24th Feb 2022, 17:14
  #59 (permalink)  
 
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It can be either, as I understand. Fusil without qualification would normally be a rifle, but you would need to look at the context. Sorry not to be more help.
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Old 24th Feb 2022, 17:22
  #60 (permalink)  
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You can have a “Eureka!” Moment, like Archimedes, to determine the density.

Weigh it, then drop it in a full container of water. Measure the volume of water that is displaced, then divide the weight by the volume to get the net density.

Of course, since there are two metals, it won’t tell you definitively what’s what, but the outer coating looks thin.

I doubt that the bulk of it is aluminum/aluminum, as that is light enough for you to notice and, as previously stated, does not rust in the same way/color as iron.

Do you have any idea how old this is? At least, what’s the minimum age? Things change with time.
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