235
INTERNAL STRAINS IN GUN FORGINGS,
Muzzle Slice.
Interior diameter, 4".16; exterior diameter, 8".61. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.3083 5.1575 7.1377	Inches. 4.3141 5.1601 7.1368 8.2688	Inches. 4.3112 5.1588 7.13725 8.2667
			
			
	8.2646		
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.			
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.3107 5.1572 7.1377 8.2578	Inches. 4.3171 5.1602 7.1372 8.2714	Inches. 4.3139 5.1587 7.13745 8.2646
			
			
			
			
RINGS ALL DETACHED.			
	5.1595 7.1359	5.1602 7.1347	5.15985 7.1353
			
			
Muzzle strains released.			
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0024 -.0008 .0000 -.0068	Inch. + .0030 + .0001 + .0004 +.0026	Inch. +.0027 -.0001 + .0002 -.0021
			
			
			
			
SECOND TO THIRD PHASE.			
	+ .0023 -.0018	+ .0000 -.0025	+ .00115 -.00215
			
			
FIRST TO THIRD PHASE.
		+ .0020	+ .0001	+ .00105
		-.0018	-.0021	-.00195
		1