3cm German Panzer Hartkerngeschos UB L'Spur Case Question

[Weasel]

I picked up this 3cm practice Hartkern projectile at War and Peace this year and would like to know which case it should be in, i have seen it show in a Mk108 30x99RR in a few soueces on line but my instinct tells me it should be in a Mk103 30x184B case as the Mk108 would not produce enough energy to make it any use for a armour piercing projectile, where as the bigger Mk103 case would be more than man enough for the job.
Best regards Weasel.

 

[blackwatch]

Nice find, this one was only used in the MK 103 case.

 

[Weasel]

Hi Blackwatch,
Thank you for the info, that is what I thought.
I will give it a gentle clean as there is a practice arrow stamped on one side that i will photograph later.
Best regards Weasel.

 

[Weasel]

After a quick gentle clean up i can find two practice arrows stamped in the body, the third has been eaten away by rust. So i am now on the look out for a good Mk103 case if someone has one they would like to sell or trade please.
Best regards Weasel.

 

[pzgr40]

Strange enough this practice version and the tungsten cored version have been found in a lake in Austria, crimped to Mk108 cases.

Regards, DJH