John Breed, Diary and Training diary, item 76
Transcription
Transcription history

Point Blank Range; Is the range due to the jump of the gun
__________________________________
Drift; The constant deflection of the projectile from the plane
of departure due to the rotation imparted by the rifling
Note
Drift is compensated for in guns by placing the
tangent sight in the gun at a permanent angle of set
but in the 18 Scr 6 F the right trunnion of the Cradle
is a 1 1/2 degrees higher than the left
__________________________________
Battery Angle; The angle formed at the Battery by imaginary
lines drawn to the target and the Observing Station
__________________________________
Muzzle Velocity; The velocity in feet per second with which a
projectile leaves the muzzle
__________________________________
Maintaining Velocity; The velocity of the projectile at any given
point of its trajectory
_________________________________
Striking Velocity The velocity of the projectile at the point
of impact
_________________________________

Point Blank Range; Is the range due to the jump of the gun
Drift; The constant deflection of the projectile from the plane
of departure due to the rotation imparted by the rifling
Note
Drift is only compensated for in guns by placing the
tangent sight in teh gun at a permanent angle of set
but in the 18 Pcr 6 F the right trunnion of the bradle
is a 1 1/2 degrees higher than the left
Battery Angle; The angle formed at the Battery by imaginary
lines drawn to the target and the Observing Station
Muzzle Velocity The velocity in feet per second with which a
projectile leaves the muzzle
Maintaining Velocity; The velocity of the projectile at any given
point of its trajectory
Striking Velocity The velocity of the projectile at the point
of impact
Description
Save descriptionLocation(s)
 ID
 17035 / 198315
 Contributor
 Mrs Jean Hanby
 Western Front
 Artillery
 Trench Life
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