SARS Pt. 2 - Wuhan Boogaloo

[Montegriffo]

the other is metric : twelve point seven by ninety nine millimeter

That right there, 99 mm can't be the caliber it would have to be an artillery shell to be that size.

12.7mm is the diameter of the bullet x 99mm is the length of the cartridge

for artillery, it's a bit different

there is diameter :155mm (6 inch)

then when they say caliber, they mean the number of shells in length the barrel is : 39 caliber

so an M777A2 L39 is 155mm / 39 caliber

British artillery tends to be measured in weight though, doesn't it? The 25 lb being the WWII gun mentioned the most.

[Smitty-48]

99mm is the length of the cartridge

That's the bit I was getting at. Does the length of the cartridge relate to the size of the charge and therefore the muzzle velocity and range?

the longer the cartridge the more propellant, but it may or may not increase velocity

the NATO fifty cal is 12.7 x 99mm 928 meters per second

the WARSAW PACT fifty call is 12.7 x 108mm 860 meters per second

[Smitty-48]

British artillery tends to be measured in weight though, doesn't it? The 25 lb being the WWII gun mentioned the most.

that system was abandoned when NATO standard was adopted

[Montegriffo]

99mm is the length of the cartridge

That's the bit I was getting at. Does the length of the cartridge relate to the size of the charge and therefore the muzzle velocity and range?

the longer the cartridge the more propellant, but it may or may not increase velocity

the NATO fifty cal is 12.7 x 99mm 928 meters per second

the WARSAW PACT fifty call is 12.7 x 108mm 860 meters per second

Is that down to a more powerful propellant then?

[Smitty-48]

That's the bit I was getting at. Does the length of the cartridge relate to the size of the charge and therefore the muzzle velocity and range?

the longer the cartridge the more propellant, but it may or may not increase velocity

the NATO fifty cal is 12.7 x 99mm 928 meters per second

the WARSAW PACT fifty call is 12.7 x 108mm 860 meters per second

Is that down to a more powerful propellant then?

the relationships are complex and dynamic, designing ammunition is a bit of an art

basically when they hit on something good, that becomes the standard until it is surpassed

[C-Mag]

Ah, I think I know the problem. In the US we have calibers like the 22-250. Which is 22 caliber projectile in a necked down .250 casing.

If I remember correctly, the Brits did it opposite of the States. So it would be a 250-22. And the Brits had a bunch of these with old Straight jacket 50-60 caliber bullets that were later modified. Then you would get something like a 68 caliber straight jacketed bullet, Later they would neck that down to 45 caliber and the Brits would call it a 680-450

[Montegriffo]

Ah, I think I know the problem. In the US we have calibers like the 22-250. Which is 22 caliber projectile in a necked down .250 casing.

If I remember correctly, the Brits did it opposite of the States. So it would be a 250-22. And the Brits had a bunch of these with old Straight jacket 50-60 caliber bullets that were later modified. Then you would get something like a 68 caliber straight jacketed bullet, Later they would neck that down to 45 caliber and the Brits would call it a 680-450

Blimey, lots of jargon in there.
What is straight jacketed and what does neck down mean.
Is that the way a cartridge is sometimes stepped down in size towards the slug.

[Smitty-48]

Ah, I think I know the problem. In the US we have calibers like the 22-250. Which is 22 caliber projectile in a necked down .250 casing.

If I remember correctly, the Brits did it opposite of the States. So it would be a 250-22. And the Brits had a bunch of these with old Straight jacket 50-60 caliber bullets that were later modified. Then you would get something like a 68 caliber straight jacketed bullet, Later they would neck that down to 45 caliber and the Brits would call it a 680-450

Blimey, lots of jargon in there.
What is straight jacketed and what does neck down mean.
Is that the way a cartridge is sometimes stepped down in size towards the slug.

c-mag may have been a good soldier, but doesn't seem to be instructor qualified

or as we used to say at battleshool;

any idiot can make things complex, a genius makes the complex simple

[StCapps]

Well, it's a little chilly, there is a wind,

But it's a biblical sunset once again, church of the big sky

We still grilled our cheeseburgers out on the deck with corn

We had our teenager birthday dinner, Boyfriend & Girlfriend Forever

She baked a beautiful cake, same one she bakes every year

Very simple layer cake with homemade white icing

So it has been a very happy birthday,

Way better than last year when there was an ice storm and she cried

So thanks for the good birthday wishes, it all worked out

JRJ lifestyle

Hurray for Dorothy

What kind of cake is it?

[C-Mag]

I told you it's complicated. There is a lot of jargon, and there are not set rules for naming gun ammo.

Here is a straight jacket cartridge


Here is a necked down cartridge