261
INTERNAL STRAINS IN GUN FORGINGS.
Breech Slice.
Interior diameter, 4".65; exterior diameter, 10".40. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.7876 5.6513 9.6434 10.2256	Inches. 4.7929 5.6455 9.6425 10.2336	Inches. 4.79025 5.6484 9.64295 10.2296
2				
3				
4				
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.		Diameters.	
	A.	B.	Mean.
1	detached	 2			Inches.	Inches.	
	4.7905 5.6500 9.6425 10.2160	4.7983 5.6437 9.6414 10.2400	4.7944
3				
4 detached				10.2280
RINGS ALL DETACHED.
5.6545	5.6475	5.6510
9.6395	9.6374	9.63845
2	detached .
3	detached .
Breech strains released.
Rings.	Diameters.		
	A.	B.	Mean.
1 detached		Inch. +. 0029 -.0013 -.0009 -.0096	Inch. + .0054 -.0018 -.0011 + .0064	Inch. + .00415 -.00155 -.0010 -.0016
2 in slice				
			
			
			
SECOND TO THIRD PHASE.
2 detached				+.0045	+.0038	+ .00415
3 detached		-.0030	-.0040	-.0035
FIRST TO THIRD PHASE.
	+ .0032 -.0039	+ .0020 -.0051	
3 detached				
	4