Projectile assembly with stabilization/obturation enhancement

A projectile assembly for conveying a projectile through a firearm barrel, the projectile assembly comprising:

• a sabot and a pusher plate,
• the sabot having a central longitudinal axis, a forward end, a rearward end and a generally cylindrical outer surface, the sabot comprising:
• a projectile seating base with a rear surface at the rear end of the sabot and a forward projectile seating surface opposite the rear surface;
• a plurality of wings extending forwardly from the projectile seating base and positioned circumferentially around the forward projectile seating surface, the forward projectile seating surface and wings defining a cup for receiving the projectile, the wings openable outwardly for releasing the projectile after the sabot and projectile leave the firearm barrel;
• the pusher plate comprising:
• a disc portion positioned at the rear surface of the base portion, the disc portion having a periphery;
• and
• at least one projection extending from the disc portion axially forward, the at least one projection displaced from the periphery of the disc, the disc portion abutting against the rear surface of the sabot and the projection extending into the projectile seating base of the sabot.