This fired 40x53SR TP projectile made by Arges of Austria (today a part of Rheinmetall) crossed my desk.
As can be seen the driving band came off (or was removed). No traces of the driving band material are recognizable (area in question is marked red).
The driving band groove has no typical knurling or other fastening/securing features we know from similar ammunition.
It could be that the driving band was made of plastic but so far I was not able to verify that Arges ever made such projectiles with plastic bands on.
- how comes the groove is smooth (radially)?
- how was assured that the driving band would not slip upon firing?
Hypothetical: is this design the reason the band came off upon impact?