12 BARRELS. 



MY NEW DOUBLE SWIVEL-GUN (weight 1931bs.) 



Barrels by Fullerd. 



Feet Inches. 



Cylinder . .29 



Relief . . .42 



Opened behind . .13 



Total (exclusive of plugs) 8 2 



DEPTH OF CUT. The bore, in cylinder, an inch 

 and \ all but a 32d : relief forward an inch and j 

 and a 32nd (a 16th difference), and cut rather less 

 deep behind than at the muzzle. 



A SINGLE STANCHION-GUN. 



Barrel 69lbs. (made in Birmingham). 



Feet. Inches. 



Cylinder . ..27 

 Relief . .44 



Opened behind . . 10 



Total 



DEPTH OF CUT. 



Cylinder ^ , barely. 



Relief V inch and ^ ^ and a 16th. 



Opened behind 3 'anda32d. 



A SINGLE GUN. 



(Musket bore and the average weight of a musket.) 



Cylinder 

 Relief 

 Opened behind 



Total 



