227
INTERNAL STRAINS IN GUN FORGINGS,
Breech Slice.
Interior diameter, 4". 76; exterior diameter, 10".42. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.8623 5.6583 9.6536 10.2731	Inches. 4.8608 5.6613 9.6447 10.2757	Inches. 4.86155 5.6598 9.64915 10.2744
2	 				
3				
4	 				
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1 detached		Inches. 4.8674 5.6570 9.6530 10.2543	Inches. 4. 8672 5.6598 9.6439 10.2917	Inches. 4.8673 5.6584 9.64845 10.2730
2				
3				
4 detached				
			
RINGS ALL DETACHED.
5.6621 !	5.6647	5.6634
9.6481	9.6396	9.64385
2	detached .
3	detached .
Breech strains released.
Rings.	Diameters.		
	A.	B.	Mean.
1 detached		Inch. +.0051 -.0013 -.0006 -. 0188	Inch. +.0064 -.0015 -.0008 +.0160	Inch. +.00575 -.0014 -.0007 -.0014
2 in slice				
3 in slice				
4 detached				
			
SECOND TO THIRD PHASE.
2 detached		+.0051 1	+ .0049	+ .0050
3 detached		-.0049 :	-.0043	-.0046 1
FIRST TO THIRD PHASE.
2 detached		+ .0038 -.0055		
3 detached			—! 0051