MINUTES OF PROCEEDINGS OF 
320 
THE APPLICATION OP PROFESSOR BASHFORTH’S GENERAL 
TABLES TO PROBLEMS IN PRACTICAL GUNNERY. 
CAPTAIN J. SLADEN, R.A., 
PEOEESSOE OE ABTIELEEY. E.M. ACADEMY. 
These General Tables are applicable to any elongated projectile with 
an ogival head, when its weight and diameter are known. 
Let d = diameter of projectile in inches, 
w = weight of do. in lbs., 
s = range in feet. 
d 2 
Then — . s = reduced range (Table I.), 
and if t = time of flight in seconds, 
d 2 
then — t = reduced time (Table II.) 
w 
Examples. 
(1) With what velocity would a 9-in. shell, fired with a battering 
charge of pebble powder, strike -a target at 1000 yds. ? (The muzzle 
velocity is 1420 ft. per second.) 
d = diameter of shell in inches =8*92 ins., 
w = weight of shell in lbs. = 250 lbs., 
s = 1000 yds. = 3000 ft. 
f n 
Hence, reduced range = — x s = *3183 x 3000 == 954*9 ft, 
