Recently posted by Framan on the patronen.su forum:
Google Translator translation of text accompanying the photo:
"Help identify the arrow.
I came across such an interesting arrow. It is about 10 cm long. Diameter is about 5 mm.
Stabilizers are similar to aluminium.
According to the history of this arrow, it was found by tenants in one of the premises of Tochmash Design Bureau. Nudelman.
And there were rumors that it was from some kind of experimental sniper rifle.
Search and googling did not yield results.
Judging by the size, it was done for a 12.7x108 player, but this is only an assumption …
Maybe someone came across similar bullets?" END QUOTE.
The ribs on the dart body may indicate this is a APFSDS (Armor Piercing Fin Stabilized Discarding Sabot) dart/flechette as apposed to a kinetic energy dart or flechette delivered as a free fall weapon or loaded into artillery projectiles or missiles.
The Nudelman Precision Engineering Design Bureau (Russian: КБ Точмаш, romanized: KB Tochmash) is a missile design bureau located in Moscow.