Details are probably in Vintage... but that's a German 1918 T-Gewehr anti-tank gun. One of the rarest guns on the planet. I happen to have one. But ammo is completely unavailable. So watching someone shoot one or more cartridges is intriguing!
There was a guy in France offering 'turned' cartridges that you could re-load. But it was sort of a solid brass bar with a hole up the middle for powder. I assume that is what these are. Because the recoil looks light. The legend is that these were beyond punishing.
en.wikipedia.org
Here is a picture of my bolt... next to a Luger. Gives you an idea of scale.
I can turn up some shells in the 'french' model. But if there is a supply of original rounds out there... I am not aware of them.
Cheers,
Sirhr
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