Thanks Lagopus and Gunman.
Surely it is possible and also very plausible explanation that the chambers have been deepened at some later point.
I considered that when thinking about buying or not buying. However, I reasoned that gun is so inexpensive that it is worth buying in any case.
In its present condition the gun is definitely not a collectors item, but I consider it as a good candidate to further hone my developing restoring skills. The buttstock is somewhat crudely repaired at wrist; wood not too fancy and very worn out; loose rib at front sling swivel; small dent on the right barrel; all original colours gone etc. However, there's no rust or pitting, and the gun seems to be tecnically OK. Also the barrels are off-face only very slightly
Regards,
Sakari
