qf 4 inch mk v naval gun 

Statements about this table:
for the gun qf 3 inch 20 cwt 1914 , the m / v value be 2500 ft / s and maxheight be 23500 ft
if the gun use be the qf 12 pdr 12 cwt , then the shell weight be 12.5 pound
the height range be higher than 22000 and the shell weight be 12.5 the time to foot ratio at 25 degree be 8.3
qf 13 pdr 9 cwt gun have a time to foot ratio of 22.1 at 55 degree
when the max height (ft) be more than 23500 or more , the gun be qf 13 pdr 9 cwt
a qf 12 pdr 12 cwt gun have a shell (lb) of 12.5 and a max height (ft) of 28750
the height range be 20000.0 and the shell weight be higher than 12.5 , the time to foot ratio at 25 degree be 8.3
for the time to foot ratio 9.2 at 25 degree , the foot per second be over 2000.0
gun
m / v ft / s
shell (lb)
time to ft (m) at 25 degree (seconds)
qf 13 pdr 9 cwt
1990
12.5
10.1
qf 12 pdr 12 cwt
2200
12.5
9.1
qf 3 inch 20 cwt 1914
2500
12.5
8.3
qf 3 inch 20 cwt 1916
2000
16
9.2
qf 4inch mk v world war i
2350
31 ( 3 crh )
4.4
gun
time to ft (m) at 40 degree (seconds)
time to ft (m) at 55 degree (seconds)
max height (ft)
qf 13 pdr 9 cwt
15.5
22.1
19000
qf 12 pdr 12 cwt
14.1
19.1
20000
qf 3 inch 20 cwt 1914
12.6
16.3
23500
qf 3 inch 20 cwt 1916
13.7
18.8
22000
qf 4inch mk v world war i
9.6
12.3
28750