335
INTERNAL STRAINS IN GUN FORGINGS Breech Slice.
Interior diameter, 4".74; exterior diameter, 1041.״. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1				Inches. 4.9313 5.6434 9.6383 10.2654	Inches. 4.9345 5.6524 9.6525 10.2674	Inches. 4.9329 5.6479 9.6454 10.2654
2				
3				
4	 				
			
Bings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1 detached		Inches. 4.9359 5.6425 9.6375 10.2600	Inches. 4.9384 5.6515 9.6520 10.2631	Inches. 4.93715 5.6470 9.64475 10.26155
2				
3				
4 detached				
			
RINGS ALL DETACHED.
2 detached		5.6468 9.6320	5.6556 9.6503	
3 detached				
			
Breech strains released.
Rings.		Diameters.	
	A.	B.	Mean.
1	detached	 2	in slice		Inch.		
	+. 0046 -.0009 -.0008 -.0054	+ .0039	+ .00425
3 in slice			-.0005 -.0043	
4 detached				-.00485
SECOND TO THIRD PHASE.
+ .0043	+ .0041	+ .0042
-.0055	-. 0017	-.0036
2	detached .
3	detached .
FIRST TO THIRD PHASE.
2 detached		+.0034	+.0032	+.0033
3 detached		-.0063	-.0022	-.00425