253
INTERNAL STRAINS IN GUN FORGINGS,
Breech Slice.
Interior diameter, !".77; exterior diameter, 10".45. Original diameters of rings in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
1		Inches. 4.9305 5.6510 9.6438 30.2809	Inches. 4.9299 5.6487 9.6453 10.2795	Inches. 4.9302 5.64985 9.64455 10.2802
2				
3				
4				
			
Rings 1 and 4 detached; rings 2 and 8 in the slice.
Rings.	Diameters.		
	A.	B.	Mean.
	Inches. 4.9373. 5.6499 9.6430 10.2746	Inches. 4.9365 5.6471 9.6441 10.2797	Inches. 4.9368 5.6485 9.64355 10.27715
2						
3				
			
			
KINGS ALL DETACHED.
2 detached			1 5.6535	5.6506	5.65205
3 detached		9.6401	9.6403	9.6402
Breech strains released.
Rings.	Diameters..		
	A.	B.	Mean.
	Inch. + .0066 -.0011 -.0008 -.0063	Inch. +.0066 -.0016 -.0012 + .0002	Inch. + .0066 -.00135 -.0010 -.00305
			
			
			
			
SECOND TO THIRD PHASE,
2 detached			 +.0036	+ .0035	+.00355
3 detached			 -.0029	-.0038	-.00335
FIRST TO THIRD PHASE.
2 detached			+.0025	+ .0019	+ .0022
3 detached		-.0037	-.0050	-.00435