349
INTERNAL STRAINS IN GUN FORGINGS,
Muzzle Slice.
Interior diameter, 4".25; exterior diameter, 9".01. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.3908 5.1490 7.1408 8.8612	Inches. 4.3973 5.1528 7.1515 8.8576	Inches. 4.39405 5.1509 7.14615 8.8594
			
3 				
			
			
Kings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches.	Inches.	Inches.
	4.3934	4.3992	4.3963
	5.1492	5.1529	5.15105
	7.1417	7.1523	7.1470
4 detached		8.8613	8.8493	8.8553
RINGS ALL DETACHED.
		! 5.1520	5.1550	5.1535
3 detached			 7.1395	7.1504	7.14495
Muzzle strains released.
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0026 + .0002 +.00v9 + .0001	Inch. + .0019 + .0001 + .0008 -.0083	Inch. + .00225 + .00015 + .00085 -.0041
			
			
			
			
SECOND TO THIRD PHASES.
	+ .0028	+ .0021	+.00245
3 detached		-.0022	-.0019	-.00205
FIRST TO THIRD PHASE.
	+.0030	+.0022	+ .0026
3 detached				-.0013	-. 0011	-.0012