What weight shell that reach its maximum height 40° 12.6 second?
m/v ft/s Shell (lb) Time to ft (m) at 25° (seconds) Time to ft (m) at 40° (seconds) Time to ft (m) at 55° (seconds) Max. height (ft)
QF 3-inch 20 cwt
13963241
real real text real real real
2-13963241-1
Performance
Performance
1990 12.5 10.1 15.5 22.1 19,000
2200 12.5 9.1 14.1 19.1 20,000
2500 12.5 8.3 12.6 16.3 23,500
2000 16 9.2 13.7 18.8 22,000
2350 31 4.4?? 9.6 12.3 28,750
SELECT Shell (lb) FROM table WHERE Time to ft (m) at 40° (seconds) = 12.6
12.6