331
INTERNAL STRAINS IN GUN FORGINGS.
Muzzle Slice.
Interior diameter, 4".14; exterior diameter, 8".56. Original diameters of rings in the slice.
Rings.		Diameters.	
	A.	B.	Mean.
	Inches. 4.2630	Inches. 4.2622	Inches. 4.2626
	5.1398	5.1402	5.1400
	7.1408	7.1435	7.14215
	8.2751	8.2691	8.2721
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.2688 5.1389 7.1405 8.2673	Inches. 4.2692 5.1394 7.1429 8.2651	Inches. 4.2690 5.13915 7.1U7 8.2662
			
			
			
			
RINGS ALL DETACHED.
5.1422 7.13825
5.1432 7.1407
5.1412 7.1358
2	detached
3	detached
Muzzle strains released.
Rings.	Diameters.		
	A.	B.	Mean.
	Inch. +.0058 -.0009 -. 0003 -.0078	Inch. + .0070 -.0008 -.0006 -.0040	Inch. +.0064 -.00085 —.000*5 -.0069
			
			
			
			
SECOND TO THIRD PHASE.
	+ .0023	+.0038	+.00305
3 detached		-.0047	-.0022	-.00345
FIRST TO THIRD PHASE.
	+ .0014	+ .0030	+ .0022
3 detached		-.0050	-7-, 0028	-.0039