Help for markings on barrels

[Jens Nordlunde]

Hello Louis-Pierre,
To my opinion the stamps should turn this way.
I cant say that I see any writing in the signs, maybe others, with a bigger knowledge than mine does, but to me they are smith's marks, or maybe armoury marks - although I think they are smith's marks.
My guess would be, although it is very far fetched, be to try to have a look at the marks from Gujarat and that area, south west Rajasthan - but at the same time, I tell you it is a wild guess, and it may be wrong.
Jens