Just made an casting.

barrel is 7.92mm / 8.15mm, throat 8.3mm.
Twist is 320mm / what is around 12,5".
I am in the lucky position to have an quite big ammount of the Hirtenberger factory made ammo,
so i think i dont have do reload the next twenty years.
But also it would be interesting to know what the rifle says to cast bullets....and yes, i can cast bullets on my own.