303
INTERNAL STRAINS IN GUN FORGINGS,
Breech Slice.
Interior diameter, 4".79; exterior diameter, 10".46. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.9149 5.6508 9.6465 10.2767	Inches. 4.9190 5.6463 9.6533 10.2883	Inches. 4.91695 5.64855 9.6499 10.2825
			
3				
4					
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches.	Inches.	Inches.
1 detached		4.9196	4.9247	4.92215
	5.6493	5.6451	5.6472
	9.6456	9.6527	9.64915
4 detached 					10.2799	10.2875	10.2837
T
RINGS ALL DETACHED.
2 detached		5.6552	5.6508	5.6530
3 detached		9.6428	9.6474	9.6451
Breach strains released.
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0047 -.0015 -.0009 + .0032	Inch. + .0057 -.0012 -. 0006 -.0008	Inch. + .0052 -.00135 -.00075 + .0012
			
			
			
			
SECOND TO THIRD PHASE
2 detached		+.0059	+.0057	+ .0058
3 detached		-.0028	-.0053	-.00405
FIRST TO THIRD PHASE.
+ .0044	+ .0045	+ .00445
-.0037	-.0059	-.0048
2	detached .
3	detached .