The use of hollow-charge ammunition by the Axis armies was referred to
in Tactical and Technical Trends, No. 18, p. 27.
The following description and accompanying sketch will serve to bring
out some details covering the German 105-mm (4.13 in)
hollow-charge shell called the 10-cm Gr 39. This
ammunition is used in the German 105-mm gun howitzer.
|Weight, filled, unfuzed
||25 lb 7 1/8 oz|
|Weight, filled, fuzed||25 lb 9 oz|
|Weight,bursting charge||3 lb 14 5/8 oz|
| Homogeneous armor||3.15 in at 30°|
| Homogeneous armor||3.74 in at normal|
|Color||Olive green, red band above rotating band.|
An interesting point in the design of this shell is the shape of the
cavity in the nose, which differs from that of the 75-mm
hollow-charge shell (see Tactical and Technical Trends
, No. 19,
p. 27). In the latter case the cavity is cylindrical for the greater
part of its length, being rounded off at the rear. In this case the cavity
is conical except at the extreme rear, which, too, is rounded.
b. Method of Filling
The charge is supported on a ring of moulded plastic material fitting the
base of the shell cavity. The charge, together with the plastic ring, central
tube and cavity liner fits into a waxed paper container. It is probable
that the charge is loaded into a hot shell lined with a bituminous composition
to keep the filling firm.
c. Bursting Charge
The bursting charge consists of three pellets of cyclotol (TNT) wax, hot
pressed, details of which are:
|| Montan Wax|
||561 gm (19 oz 12.5 dr)
||720 gm (25 oz 6.25 dr)
||490 gm (17 oz 4.5 dr)
Note: It is probable that fuze AZ 38 and
booster Zdlg 40 are fitted. These are shown in
the accompanying sketch.