Ordinance Identification

Does anyone know anything about US Naval artillery? I believe that they use/used shells of 6" or roundabout 6" for the main armament on some of their warships too which could be another possibility?

I looked at the BL 6" on the British Naval Cruisers and they looked nothing like the G profile of that particular projectile, a further point is the OP does not state where the 152.4mm measurement was taken the body or the driving band I found these but again the profile is wrong I have not tried the Russian side of things besides we have not got a YOM of it.

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Originally Posted by Flying10uk

Cinders, are you able to explain how the shell can be for a 155mm gun when it only measures up as 152.4mm in diameter? To quote a precise dimension such as this (152.4mm) I assume that Biggunsarebetter has measured the shell accurately with vernier callipers or a micrometer, unless he has extremely good eyesight. I recognised the figure of 152.4mm as equating to 6" as soon as I read it but it is easy to check/convert by dividing 152.4 by 25.4 which gives 6 in this example.

The reason that I suggested naval is because it was a commonly used calibre of gun used on cruisers of the Royal Navy and Commonwealth navies during WW2 and beyond. A good example of this is HMS Belfast, now a museum ship, which was originally part of the "Town class" of cruisers and their main armaments consisted of 12X 6" guns mounted in 4 triple turrets. After hitting a magnetic mine in 1939 and nearly being lost, HMS Belfast was substantially rebuilt into a class of her own (improved), featuring many alterations and improvements but still retaining her main armament of 12X 6" guns that she has to this day.

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Thank you for your reply. I did measure it with calipers. There are no markings nor stamping so on the shell. I'm going to study the HMS Belfast now. I love this stuff!

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Originally Posted by Flying10uk

Does anyone know anything about US Naval artillery? I believe that they use/used shells of 6" or roundabout 6" for the main armament on some of their warships too which could be another possibility?

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Yes, the CL (light cruisers) used 6" guns, mostly in triple turrets that resembled battleship configuration.

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Originally Posted by Biggunsarebetter

Thank you for your reply. I did measure it with calipers. There are no markings nor stamping so on the shell. I'm going to study the HMS Belfast now. I love this stuff!

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One of her sister ships, HMS Edinburgh, was sunk during WW2 while transporting Russian gold which was later salvaged in more recent times. I have personally seen the ship's bell from HMS Edinburgh which now resides in the Scottish War museum, Edinburgh Castle. The bell shows some signs of "battle damage" which I assume was caused during the loss of the ship and while looking at it, it made me think of the losses at sea on the Russian convoys; a reality of war.
Link to photo of the bell: https://www.milsurps.com/showthread....179#post413179

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Originally Posted by CINDERS

I looked at the BL 6" on the British Naval Cruisers and they looked nothing like the G profile of that particular projectile, a further point is the OP does not state where the 152.4mm measurement was taken the body or the driving band I found these but again the profile is wrong

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If the shell accurately measures up as 6" or 152.4mm, if you prefer, then surely it has to be a 6" shell. I don't see how it can somehow morph into something larger such as a 155mm shell. A 6" British naval shell is just a suggestion because it was commonly used but it could equally well be a U.S. naval shell or it could be a shell for field artillery.

If someone is able to explain why a shell that measures 6"/152.4mm in diameter is in reality something bigger, please, would they give an explanation here.

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Originally Posted by Flying10uk

I don't see how it can somehow morph into something larger such as a 155mm shell.

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Nope, we were still working out had it been measured and with what...but I don't think it's metric, it would be inch.

Here is an excerpt from TM9-1000-202-14 "Evaluation of Cannon Tubes" A new 155 mm howitzer tube measures 6.100 inches.

https://www.milsurps.com/images/impo...g1zoom3h-1.jpg

If you have need to inspect 120 mm, 155 mm and 8 inch gun tubes, you're in luck...

Ebay: Cannon Tube Pullover Gage

So if we take the 6.1" diameter dimension and convert it back into a metric size by multiplying by 25.4, this time, (6.1 X 25.4) it gives 154.94mm diameter.

An ordinance is a U.S. law. What you have is ordnance.
"...6" across..." Indicates a 6" gun.
"...how the shell can be for a 155mm gun when..." A 155mm gun's diameter is 6.1". Like rifle cartridges, projectile diameter doesn't always have to do with nomenclature. A 6" naval gun's diameter is 152mm. And the projectile weighs over 100 pounds. Whereas a 155mm howitzer's projectile weighs 90 to 100 pounds. The filler(may or may not be explosives) runs less than 20 pounds.

It sure looks like the 155mm I had...