213
RECOIL MECHANISM—15-POUNHER GUN NO. 12,
On gauged length B, over ends of piston rod.
Applied loads.	Gauge readings.		Remarks.
	Direct movement	Set.	
Pounds.	Inch.	Inch.	
1,000	0.	0.	Initial load.
10,000	.0032		
20,000	.0066		
30,000	.0101		
40,000	.0136		
50,000	. 0169		
60,000	.0204		
50,000	.0202		
40,000	.0197		
30,000	. 0135		
20,000	.0086		
10,000	.0036		
1,000		0006	
60,000	.0204		
1,000		-.0006	
10,000	.0025		
20,000	.0063		
30,000	.0095		
40,000	.0132		
50,000	.0167		
60,000	.0202		
50,000	.0199		
40,000	.0185		
30,000	.0127		
20,000	.0078		
10,000	.0033		
1,000		-.0009	
On a gauged length across rear, lower (when gun is in natural position) corners of the oscillating slide.
1,000	0.	0.	Initial load
10,000	.021		
20,000	.045		
30,000	.067		
40,000	.087		
50,000	.106		
60,000	.123		
50,000	.122		
40,000	.120		
30,000	.103		
20,000	.071		
10,000	.035		
1,000	.0		
On gauged length Q, from bottom of oscillating slide, front end of lug, to strap fixed to rear end of slide, and encircling the recoil cylinder, showing movement of the slide within itself.
rear.
Initial load.
Movement on overturning one, toward the
1,000	0.	0.
10,000	-.0045	
20,000	-.0091	
30,000	-.0129	
40,000	-.0162	
50.000	-.0193	
60,000	-.0219	
50,000	-.0217	
40,000	-.0200	
30,000	-.0152	
20,000	-.0105	
10,000	-.0046	
1,000		+.0003
60,000	-.0216	
1,000		+.0007
60,000	-.0217	
1,000		+.000o