216	RECOIL MECHANISM—15-POUNDER GUN NO. 12.
Gun in firing position.
Simultaneous readings taken on gauged lengths A1 and B.
Gauged length A1 established from fixed block on the gun near rear end of recoil cylinder to rear end of lug sleeve.
Applied loads.	Gauge readings.		Remarks.
	On A1.	On B.	
Pounds.	Inch.	Inch.	
1,000	0.	0.	Initial load.
10,000	.0015	.0031	
20,000	.0026	.0065	
30,000	.0041	.0102	
40,000	.0056	. 0140	
50,000	.0072	.0176	
60,000	.0089	.0207	
65,000	.0095	. 0227	
68,000	.0100	. 0238	
69,000	.0101	.0241	
1,000	0.	0.	
72,000	.0110	.0257	
1,000	.0003	.0002	
72,000	.0114	. 0261	
1,000	.0002	.0003	
72,000	.0114	.0261	
1,000	.0002	.0003	
On gauged length C, from bottom of oscillating slide, front end of lug, to fixed block on gun.
1,000 10,000 20,000 30.000 40.000 50.000 60.000 70,000 72,000׳ 70,000 60,000 50.000 40,000 30,000 20.000 10,000 1,000	0. .0057	0.	Initial load.
	.0108		
	.0157		
	.0207		
	.0251		
	.0302		
	.0349		
	.0354		
	.0354		
	.0354+ .0353		
			
	.0272		
	. 0201		
	.0135		
	.0072		
		.0001