285
INTERNAL STRAINS IN GUN FORGINGS,
Muzzle Slice.
Interior diameter, 4".27; exterior diameter, 8".59. Original diameters of rings in the slice.
Diameters.		
A.	B.	Mean.
Inches. 4.4174 5.1375 7.1477 8.2075	Inches. 4.4203 5.1446 7.1400 8.2054	Inches. 4.41885 5.14105 7.14385 8.20645
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.4183 5.1377 7.1482 8.2065	Inches. 4.4238 5.1438 7.1395 8.2050	Inches. 4.42105 5.14075 7.14385 8.20575
			
			
			
			
RINGS ALL DETACHED.
5.1391	5.1459	5.1425
7.1448	7.1378	7.1413
2	detached .
3	detached.
Muzzle strains released.
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0009 + .0002 + .0005 -.0010	Inch. +.0035 -.0008 -.0005 -.0004	Inch. + .0022 -.0003 .0000 -.0007
			
			
			
			
SECOND TO THIRD PHASE.
	+.0014 -.0034	+.0021 -.0017	+.00175 -.00255
			
			
FIRST TO THIRD PHASE.			
	+ .0016 -.0029	+.0013 -.0022	+.00145 -.00255