309
INTERNAL STRAINS IN GUN FORGINGS.
Muzzle Slice.
Interior diameter, 4".18; exterior diameter, 8".62. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.3204 5.1477 7.1488 8.3742	Inches. 4.3233 5.1477 7.1460 8.3743	Inches. 4.32185 5.1477 7.1474 8.37425
2				
3. 				
4				
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Diameters.
A.	B.	Mean.
Inches.	Inches.	Inches.
4.3232	4.3280	4.3256
5.1468	5.1467	5.14675
7.1480	7.1452	7.1466
8.3731	8.3793	8.3762
Rings.
1	detached
2	.....
3	.........
4	detached
RINGS ALL DETACHED.
2 detached			5.1485	5.1485
3 detached			7.1441	7.14515
Muzzle strains released.			
Rings.	Diameters.		
	A.	B.	Mean.
1 detached		Inch. + .0028 -.0009 -.0008 -.0011	Inch. +.0047 -.0010 -.0008 + .0050	Inch. +.00375 -.00095 -.0008 + .00195
2 in slice				
			
			
			
SECOND TO THIRD PHASE.			
	+ .0017 -.0018	+.0018 -.0011	+.00175 -.00145 !
			
			
FIRST TO THIRD PHASE.
2 detached			1 +.0008	+.0008	+ .0008
3 detached			-.0019	-‘.00225