325
INTERNAL STRAINS IN GUN FORGINGS,
Breech Slice.
Interior diameter, 4".73; exterior diameter, 10".43. Original diameters of rings in the slice.
e> Ring.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.8879 5.6489 9.6576 10.2730	Inches. 4.8860 5. 6445 9.6480 10.2565	Inches. 4.88695 5.6467 9.6528 10.26475
2				
			
4				
			
Bings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.8975 5.6472 9.6565 10.2675	Inches. 4.8945 5.6428 9.6469 10.2560	Inches. 4.8960 5.6450 9.6517 10.26175
2				
3				
			
			
RINGS ALL DETACHED.
2 detached		5.6536	5.6495	5.65155
3 detached		9.6534	9.6386	9.6460
Breech strains released.
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0096 -.0017 -.0011 -.0055	Inch. +.0085 -.0017 -.0011 -.0005	Inch. + .00905 -. 0017 -.0011 -.0030
			
			
			
			
SECOND TO THIRD PHASE.
i 2 detached		+.0064	+ .0067	+ .00656
3 detached		-.0031	-.0083	-.0057
FIRST TO THIRD PHASE.
2 detached		+.0047	+ .0050	+ .00485
3 detached		-.0042	-.0094	-.0068