RECOIL MECHANISM 15-POUNDER GUN NO. 12,
208
Gun rotated 180° and brought right side up. Measurements on gauged length L, across top of oscillating slide at rear end.
Applied loads.	Gauge readings.		Remarks.
	Direct movement.	Set.	
Pounds.	Inch,	Inch.	
• 1,000	0.	0.	Initial load.
10,000	.0182		
20,000	. 0324		
30,000	. 0425		
40,000	.0496		
50,000	.0552		
60,000	.0608		
50,000	. 0584		
40,000	. 0524		
30,000	.0428		
20,000	.0305		
10,000	.0199		
1,000		0.	
Measurements on gauged length M.
1,000	0.	0.	Initial load.
10,000	.0082		
20,000	.0144		
30,000	.0184		
40,000	.0222		
50,000	. 0253		
60,000	.0284		
50,000	.0272		
40,000	. 0251		
30,000	.0173		
20,000	.0115		
10,000	.0062		
1,000		.0005	
Measurements on gauged length N.
1,000	0.	0.	Initial load.
10,000	-.0020		Movement inward toward the gun.
20,000	-.0065		
30,000	-.0103		
40,000	-.0127		
50,000	-.0151		
60,000	-.0172		
50,000	-.0175		
40,000	-.0168		
30,000	-. 0144		
20,000	-.0113		
10,000	-.0072		
1,000		-.0004