75mm High Explosive MK1 - MK4

[DEADLINE222]

What is the difference between the 75mm MK1 and the MK4?

Are they the "same" or two different projectiles? Mechanically or in terms of paint; how can you tell?

Looking at the MK 1 in "Service markings of ammunition and ammunition containers" ordnance pamphlet PDF found in the downloads section.

The MK 4 is found in TM 9-305 and downloadable here: http://carl.army.mil/wwIItms/



I picked up this 75mm HE projectile for $10.00 this past weekend. It has some sort of thing in the threads, which I think is a cap. The black thing clearly has some evidence of prior attachment to what is in the threads, but is now seperate.

Anyone know what it is?

 

[shelldude]

Hello deadline222,

Here are two photographs showing the difference between the Mk i and Mk IV U.S. 75mm HE projectiles. The Mk IV was much more ballistically efficient with it's streamlined nose and boat-tail base. I can't tell you anything about the metal cap...

Best regards,

Randall

 

[DEADLINE222]

Oh no!

Looks as if I will be doing a repaint.

 

[DEADLINE222]

I just noticed that the threads of the above mentioned projectile are 39mm in diameter, while all of my other examples have 36mm threads.

Does anyone know why?