Stop in for a cup of coffee

View attachment 1716156422Maybe I should bring the Fabo crew truck to party on so Toolman can serve his home brew or whatever everyone brings to sip on.
Double Dog Dare!
Ok so here’s a riddle for you to solve.

Stopped at a gun shop yesterday in Kentucky on the way home. They had an 1898 Gewher Mauser. Original rifle but had been rechambered in something that they’ve not been able to figure out. Has a 7.62mm throat. However, 8mm Mauser, 308, 30-06, 7.62x54R, 7.62x39, 7mm Mauser , none of those fit or even chamber.
7mm-08?