345
INTERNAL STRAINS IN GUN FORGINGS,
Muzzle Slice.
Interior diameter of slice, 4".23; exterior diameter of slice, 9".07. Original diameters of rings in the slice.
Diameters.		
A.	B.	Mean.
Inches.	Inches.	Inches.
4.3795	4.3728	4.37615
5.1419	5.1360	5.13895
7.1636	7.1667	7.16515
8.9069	8.9036	8.90525
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.3854 5.1417 7.1636 8.9030	Inches. 4.3795 5.1356 7.1666 8.9056	Inches. 4.38245 5.13865 7.1651 8.9043
			
			
			
			
RINGS ALL DETACHED.
	5.1444	5.1353	5.13985
	7.1611	7.1651	7.1631
			
Muzzle strains released.
Rings.	Diameters.		
	A.	B.	Mean.
	Inch.	Inch.	Inch.
	+.0059	+.0067	+ .0063
	-.0002	-.0004	-.0003
	.0000	-.0001	-.00005
4 detached		-.0039	+ .0020	-.00095
SECOND TO THIRD PHASE.
	+ .0027	-.0003 i	+.0012
3 detached		-.0025	-.0015	-.0020
FIRST TO THIRD PHASE.
+.0009
-.00205
	+.0025	-.0007
	-.0025	-.0016