Copyright International Ammunition Association, 2006. All rights
reserved.
Cartridge of the Month
February 2006
9mm Dumonthier
Specimen and photos courtesy of Paul
Smith
These rounds were developed as an inside primed round used in walking stick guns.
These rounds were manufactured from ca. 1880 to ca. 1910. Dumonthier rounds were also manufactured in 7 x 11.5mm and 12 x 14.7mm.
The round is very distinguishable as the headstamp is a raised 'GG (monogram) D. 9 M/M'
This round was manufactured by SFM. .
Note the construction of the priming system which consists of a copper cup containing the priming composition which is sandwiched between the brass case and an internal brass component which acts as the anvil and contains the flash hole. This makes them difficult to identify from rimfire cartridges when only looking at the exterior.
The round is very distinguishable as the headstamp is a raised
‘GG (monogram) D. 9 M/M’