Some info on German AT guns mentioned previously
Pak 40:
Rheinmetals upgraded version of the 5cm Pak 38. The 7.5cm Pak 40 is similar in
appearance to the 5 cm Pak 38. The monobloc tube is fitted with a double-baffle muzzle-
brake, and the breech mechanism is semi automatic with a horizontal sliding block. the
carriage, with tubular split trail has solid-rubber-tired wheels and torsion bar suspension
and may be towed at about 25 mph. The shield consists of two 4-mm plates about 1"
apart.
Characteristic's
Caliber...........................................................75mm (2.95 inches)
Length of tube....................................................11 feet 4 inches
Weight in action..............................................3,136 lbs
Muzzle velocity (AP40).....................................3,250 fps
Muzzle velocity (APCBC)...................................2,530 fps
Muzzle velocity (HE)........................................1,800 fps
Muzzle velocity (Hollow charge)........................1,476 fps
Traverse.........................................................65 deg
Elevation.......................................................- 5 deg to + 22 deg
Traction..........................................................Motor drawn
Ammunition
Weights of projectiles fired from this gun are;
HE.................................................................12.54 lbs
APCBC...........................................................15 lbs
AP shot..........................................................9.25 lbs
Hollow charge.................................................9.97 lbs
Smoke...........................................................13.7 lbs
With APCBC ammunition, penetration of homogeneous armour is 102mm (4.02 inches)
at 30 deg from normal at 1000 yds.
This AT gun was issued, with mods to the shield to allow attaining upper elevations, as
an Artillery weapon mainly to Volkstum units near the end of the war.
2.8 cm s. Pz.B 41
This first Gerlich high velocity tapered-bore antitank gun first appeared in 1941. The
monobloc tueb has a semi-automatic breech with horizontal block breech and is fitted
with a muzzle-brake. An airborne version existed which consists of an identical tube on a
light alloy cradle and a wheeled tubular mount with no shield. This version weights 260 lbs.
Characteristic's
Caliber...........................................................initial 28mm (1.1 inches)
emergent 20mm (0.78 inches)
Length of tube.................................................5 feet 7.62 inches
Weight in action..............................................501 lbs
Muzzle velocity................................................4,600 fps
Traverse........................................................90 deg
Elevation........................................................-5 deg to + 45 deg
Ammunition.
HE and AP (tungsten carbide core) rounds are fired .
Weights of projectiles fired from this gun are:
HE................................................................3.1 Oz's
AP................................................................4.6 Oz's
The AP ammo will penetrate 68 mm (2.88 inches) at 700 yds, 30 deg from normal
4.2 cm le. Pak 41
The 4.2 cm le. Pak 41 is the second of the tapered-bore AT gun series. The mono-bloc
tube is long with obvious external as well as internal taper and has no muzzle-brake. The
sliding breech-block is hand operated. The mount is identical to the 3.7 cm Pak but with a
double upper shield. A second shield 3/16 inch thick is riveted to the standard shield with
an intervening space of approximately 1 3/8 inches.
Characteristic's
Caliber...........................................................initial 42 mm (1.65 inches)
emergent 28 mm (1.1 inches)
Length of tube................................................7 feet 4.5inches
Weight in action..............................................990 lbs
Muzzle velocity...............................................4,100 fps
Traverse........................................................44 deg
Elevation........................................................-8 deg to + 32 deg
Traction..........................................................Motor drawn
Ammunition.
HE and AP (tungsten carbide core) rounds are fired .
Weights of projectiles fired from this gun are:
HE................................................................0.56 lbs
AP................................................................0.69 lbs
The AP ammo will penetrate 68 mm (2.88 inches) at 700 yds, 30 deg from normal
7.5 cm pak 41
This was the third tapered-bore AT gun to be introduced. It has a muzzle brake, and a
semi automatic vertical sliding breech block. A cylindrical cradle covering the rear half of
the tube is attached to the shield by a shperical universal joint.
Characteristic's
Caliber...........................................................initial 75 mm (2.95 inches)
emergent 55 mm (2.17 inches)
Length of tube................................................13 feet 7.375 inches
Weight in action..............................................3,136 lbs
Muzzle velocity................................................3,936 fps (estimated)
Traverse.........................................................60 deg
Elevation........................................................- 108 deg to + 18 deg
Traction..........................................................Motor drawn
..
Ammunition.
HE and AP (tungsten carbide core) rounds are fired .
Weights of projectiles fired from this gun are:
HE................................................................3.1 oz
AP.................................................................5.68 lbs, of which 2.01 lbs is the tungsten
core. The AP round will penetrate 130 mm (5.12 inches) of homogeneous armour at 30 deg
from normal at 1000 yds
Source:
Handbook on German Military Forces. US War Dept Tech Manual, 15 Mar 1945 TM-E 30-451.