275
INIÏERNAL STRAINS IN GUN FORGINGS,
Breech Slice.
Interior diameter, 4".75; exterior diameter, 10".41. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.9147 5.6635 9.6573 10.2603	Inches. 4.9169 5.6459 9.6530 10.2485	Inches. 4.9158 5.6547 9.65515 10.2544
2				
3				
4				
			
Bings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.9212 5.6615 9.6559 10.2702	Inches. 4.9260 5.6447 9.6524 10.2263	Inches. 4.9236 5.6531 9.65415 ID. 24825
2				
3				
			
			
RINGS ALL DETACHED.
2 detached		5.6667	5.6505	5.6586
3 detached		9.6525	9.6456	9.64905
Breech strains released.
Rings.	Diameters.		Mean.
	A.	B.	
	Inch. +.0065 -.0020 -.0014 +.0099	Inch. +.0091 -.0012 -.0006 -.0222	Inch. + .0078 -.0016 -.0010 -.00615
			
			
			
			
SECOND TO THIRD PHASE.
2 detached		+.0052	+.0058	+.0055
3 detached		-.0034	-.0068	-.0051
FIRST TO THIRD PHASE.
2 detached		+.0032	+.0046	+.0039
3 detached		-.0048	-.0074	-.0061