317
INTERNAL STRAINS IN GUN EORGINGS,
Muzzle Slice.
Interior diameter, 4".17; exterior diameter, 8".53. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.3436	Inches. 4.3419	Inches. 4.34275
2		5.1572	5.1549	5.15605
3		7.1492	7.1516	7.1504
4		8.3899	8.3851	8.3875
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.3484 5.1562 7.1484 8.3836	Inches. 4.3465 5.1539 7.1510 8.3813	Inches. 4.34745 5.15505 7.1497 8.38245
2				
3				
			
			
RINGS ALL DETACHED.
2 detached		5.1567	5.1549	5.1558
3 detached		7.1472	7.1494	7.1483
Muzzle strains releas(
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. + .0048 -.0010 -.0008 -.0063	Inch. +.0046 -.0010 -.0006 -. 0038	Inch. +.0047 -.0010 -.0007 -.00505
			
			
			
			
SECOND TO THIRD PHASE.
2 detached 		+ .0005	+. 0010	+ .00075
3 detached		-.0012	-.0016	—.0014
FIRST TO THIRD PHASE.
	-.0005	.0000	—.00025
	-.0020	-.0022	-.0021