307
INTERNAL STRAINS IN GUN FORGINGS,
Breech Slice.
Interior diameter, 4".76; exterior diameter, 10".43. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.8989 5.6449 9.6606 10.2858	Inches. 4.8991 5.6476 9.6543 10.2849	Inches. 4.8990 5.64625 9.65745 10.28535
2				
3				
4				
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches.	Inches.	Inches.
1 detached		4.9024	4.9030	4.9027
2		5.6433	5.6465	5.6449
3		9.6598	9.6537	9. 65675
4 detached		10.2888	10.2808	10.2848
RINGS ALL DETACHED.
2 detached			! 5.6488	5.6505	5.64965
3 detached			i 9.6578 |	9.6510	9.6544
Breech strains released.
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0035 -.0016 -.0008 +.0030	Inch. + .0039 -.0011 -.0006 -.0041	Inch. +.0037 -.00135 -.0007 -.00055
			
			
			
			
SECOND TO THIRD PHASE.
2 detached			 +. 0055	+ .0040	+ .00475
3 detached			 -.0020	-.0027	-.00235
FIRST TO THIRD PHASE.
2 detached			! +. 0039	+.0029	+.0034
3 detached			: -.0028	-.0033	-.00305 -