295
INTERNAL STRAINS IN GUN FORGINGS.
Breech Slice.
Interior diameter, 4".77; exterior diameter, 10".42. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.9346 5.6459 9.6432 10.2929	Inches. 4.9276 5.6477 9.6449 10.2896	Inches. 4.9311 5.6468 9.64405 10.29125
2				
3				
4	:				
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.9393 5.6445 9.6423 10.3041	Inches. 4.9308 5.6460 9.6436 10.2895	Inches. 4.93505 5.64525 9.64295 10.2968
2				
3				
			
			
RINGS ALL DETACHED.
2 detached			 5.6486	5.6507	5.64965
3 detached			 9.6395	9.6449	9.6422
Breech strains released.
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0047 -.0014 -.0009 +.0112	Inch. +.0032 -.0017 -.0013 -.0001	Inch. +.00395 -.00155 -.0011 +.00555
			
			
			
			
SECOND TO THIRD PHASE.
+.0041	+ .0047	+ .0044
-.0028	+ .0013	-.0075
2	detached .
3	detached .
FIRST TO THIRD PHASE.
2 detached		+.0027	+.0030	+ .00285
3 detached		-.0037	.0000	-.00185