247
INTERNAL STRAINS IN GUN FORGINGS,
Muzzle Slice.
Interior diameter, 4".19; exterior diameter, 8".54. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches.	Inches.	Inches.
	5.1583 7.1516 8.3579	5.1510 7.1470 8.3491	5.15215 7.1493 8.3535
			
			
				
Rings 1 and 4 detached; rings 2 and 3 in the slice.
“Rings.		Diameters.	
	A.	B.	Mean.
	Inches. 4.3554	Inches. 4.3524	Inches. 4.3539
	5.1524	5.1500	5.1512
	7.1511	7.1463	7.1487
4 detached		8.3484	8.3521	8.35025
KINGS ALL DETACHED.
	5.1512	5.1534	5.1523
3 detached		7.1495	7.1435	7.1465
Muzzle strains released.
Rings.	Diameters.		
	A.	B.	Mean.
	Inch.	Inch.	Inch.
	-.0009 -.0005 -.0095	-.0010 -.0007 + .0030	-.00095 -.0006 -.00325
			
			
			
SECOND TO THIRD PHASE.
	-.0012	+.0034	+.0011
3 detached		-.0016	-.0028	-.0022
FIRST TO THIRD PHASE.
	-.0021	+ .0024	+ .00015
3 detached		-.0021	-. 0035	-.0028