237
INTERNAL STRAINS IN GUN IORGINGS,
Breech Slice.
Interior diameter, 4".72; exterior diameter, 10".44. Original diameters of rings in the slice.
Rings.	Diameters.		
	A. 1 B.		Mean.
1		Inches. 4.8570 5.6424 9.6462 10.2971	Inches. 4.8640 5.6486 9.6452 10.3186	Inches. 4.8605 5. 6455 9.6457 10.30785
2				
3		 4					
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.		Diameters.	
	A.	B.	Mean.
1 detached		Inches. 4.8635	Inches. 4.8716	Inches. 4.86755
2		5.6413	5.6472	5.64425
3		9.6453	9.6443	9. 6448
4 detached		10.2816	10.3229	10.30225
RINGS ALL DETACHED.
5.6524	5.6493
9.6415	9.6408
5. 6462 9. 6401
2	detached.
3	detached..
Breech strains released.
. Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0065 -.0011 -.0009 -. 0155	Inch. + .0076 -.0014 -.0009 -.0043	Inch. +.00705 -.00125 -.0009 -. 0056
			
			
			
			
SECOND TO THIRD PHASE.
2 detached		+.0049	+ .0052	+.00505 *
3 detached			-.0052	-.0028	-.0040
FIRST TO THIRD PHASE.
+ .0038	+ .0038	+ .0038
-.0061	-.0037	-.0049
2	detached .
3	detached .