511 
PEACTICE 
WITH THE 
25 MM (1-in.) NOEDENFELT MACHINE GUN, 
on H. Griison’s practice ground at Buchan , on the 22nd December, 1879. 
BY 
CAPT. E. BAINBRIDGE, R.A. 
The trial practice took place in the presence of the Captain Glomsda 
von Buchholz and the 1st Lieutenant (Captain-Lieutenant) Jack. 
After an exhaustive explanation of the mechanism of the revolving 
cannon, it was stripped and assembled. 
The easy access to the inner part of the gun, the possibility of 
turning down the upper closing plate by pressing down a spring, and 
of thus bringing the whole mechanism into view, make it possible in a 
few minutes to dismount all the moveable parts of the gun, to remount 
it, and to submit it thereby to a minute examination. 
The solid structure of all the parts of the mechanism, the simplicity 
and strength of the machinery, the very little room taken up by the 
spiral springs exclude the chance of accidents during the passage of 
cartridges and projectiles through the gun, and ensure easy manipula¬ 
tion and great strength. The gun, with all its gear, as well as 
ammunition, give the impression of being thoroughly well made, which 
impression was justified by the following practice. 
The object of the practice was to ascertain the penetrating force of 
this gun against wrought-iron and steel plates, both single as well as 
one behind the other, both at right or acute angles. 
The cartridges were all loaded with large grained English rifle 
powder. The usual charge consisted of 625 grains (40*5 gramm), and 
