Cartridge Quiz #3

[Son of Tiriaq]

Here's a real challenge...

It is based on a .50 BMG case. It hails from the USA. There is no headstamp. The projectile has an aluminum nose piece (points deducted for anyone suggesting that it is a 'silvertip' - it is exactly the opposite).

Paul

 

[Onagoth]

Man, I suck at these games

 

[woodchopper]

Hmmmm good thing you said its based on a .50 BMG now I have some scale of size


its a ...... Don't know, looks like about a .30 some sort of Incindery spotting round ??

 

[Shrek]

.30-.50BMG, with .30 AP round (the only one that didn't keyhole).

 

[dudley2112]

what would the barrel life be like on something like that

 

[NavyShooter]

No clue...

http://www.dtic.mil/dticasd/sbir/sbir032/a044a.pdf

 

[Son of Tiriaq]

You've got the general idea...it is a .40-3800 Winchester (.40 cal at 3,800 fps) developed in the late 1960's, early 1970's as a light anti-armour round. The aluminum windscreen covers the tip of the tungsten carbide penetrator.

Here's a group photo:

Bore erosion and pressure was an issue. Some projectiles were modified to have a smaller bearing surface:

For the loose projectiles, the top one is 41.22 mm in length and weighs 31.34 g while the lower one is 40.47 mm in length and weighs 29.84 g.

Paul

 

[woodchopper]

so a fore runner of the current .50 SLAP ??

 

[Son of Tiriaq]

No - the .50 SLAP had its origins in the early 1980's when the Russian occupied Afghanistan and the Americans wanted to develop a round that the Mujahideen could use against the well armoured Mi-24 Hind's helicopter. As such, some of the first rounds developed were for the 12.7 x 108 DShK.

Paul

 

[Shrek]

.30-.50's began to show throat erosion at 20-25 rounds, with a (useful) barrel life of 100-300 rounds.

Sometimes more of a good thing.....makes it not a good thing at all!

 

[kfn]

I still want to know what we get as a prize!

 

[outoftowner]

our dignity.....?