343
INTERNAL STRAINS IN GUN FORGINGS Breech Slice.
Interior diameter. 473.״; exterior diameter, 10".50. Original diameters of rings in the slice.
	Diameters.		
Rings.	A.	B.	Mean.
	Inches, 4.8743 5.6440 9.6499 10.3145	Inches. 4.8783 5.6493 9.6484 10.3223	Inches. 4.8763 5.64665 9.64915 10.3184
			
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.			
Rings.	Diameters.		
	A.	B. *	Mean.
	Inches. 4.8802 5.6430 9.6492 10.3099	Inches. 4.8835 5.6483 9.6476 10.3283	Inches. 4.88185 5.64565 9.6484 10.3191
			
			
RINGS ALL DETACHED.			
	5.6450 9.6460	5.6507 9.6460	5.64785 9.6460
			
			
Breech strains released.			
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0059 -.0010 -.0007 -.0046	Inch. + .0052 -.0010 -.0008 + .0060	Inch. + .00555 -.0010 -.00075 +.0007
			
			
			
			
SECOND TO THIRD PHASE.			
	+.0020	+.0024 -. 0016	+.0022 -.0024
	-.0032		
			
FIRST TO THIRD PHASE.			
	. +.0010	+.0014 -.0024	+.0012 -.00315
	. -.0039		
	!