23.1 pounds, total weight.

1.1 pounds, weight of bursting charge.

TNT, type of bursting charge.

Zdlg. C/98 Np booster.

REMARKS. At the shoulder of the projectile is a detachable guide band. This band is tri-sected by cuts almost completely through the band and the complet band, which is a push fit on the shoulder, is held in position by three ball bearings. These are seated in cavities spaced equally round the periphery of the shoulder of the shell and project into cylindrical drillings through each segment of the guide band. The drillings are threaded toward the outer circumference and the ball bearings after insertion are finally located by screws which seat the outer surface of the bearings. After insertion of the balls and the positioning of the three screws, therefore, the guide band is firmly attached to the shell body, but should trisection of the guide band be completed, each segment, together with ist retaining ball, would thereforce be free to fall away from the shell body.

The rotating band holder is located at the base of the shell, which is keyed to receive it. The holder itself is in three detached segments held in position only by the soft iron driv-ing band. Movement is prevented by three cylindrical pieces fitting into cavities located in the shell body and the driving band holder. There are also three cylindrical pins bet-ween the segments.

It is believed that after leaving the gun the guide band and the rotating band holder are each split into three separate segments, which, together with the ball bearings, pins and cylindrical pieces retainting them are flung off. The remaining projectile is then of much better aero-dynamic shape than is possible with a conventional projectile.

Figure 336 – H.E. Projectile with Disintegrating Bands, 105-mm