283
INTERNAL STRAINS IN GUN FORGINGS
Breech Slice.
Interior diameter, 4".75; exterior diameter, 10".46. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.9025	Inches. 4.8960	Inches. 4.89925
2		5.6508	5.6525	5.65165
3		9.6496	9.6442	9.6469
4		10.2805	10.2715	10.2760
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches.	Inches.	Inches.
1 detached		4.9058	4.8979	4.90185
	5.6502	5.6516	5.6509
3 		9.6497	9.6439	9.6468
4 detached		10.2772	10.2718	10.2745
RINGS ALL DETACHED.
	5.6513	5.6542	5.65275
	9.6441	9.6475	9.6458
			
Breach strains released.
Rings.	Diameters.		
	A.	B.	Mean.
1 detached		Inch. +.0033 -.0006 + .0001 -.0033	Inch. + .0019 -.0009 -.0003 + .0003	Inch. +.0026 -.00075 -.0001 -.0015
			
			
			
SECOND TO THIRD PHASE.
2 detached		+.0011	+.0026	+.00185
3 detached		-.0056	+.0036	-.0010
FIRST TO THIRD PHASE.
2 detached	-		+ .0005	+ .0017	+ .0011
3 detached		-.0055	+.0033	-.0011