Despite the high rate of fire, there is a significant and mandatory pause between releasing the fire button and being able to fire again, limiting the Cestra's ability to fire single shots or short bursts.
While having good base accuracy, the Cestra has significant recoil that scatters its shots, making it ineffective for long range shooting. Steady Hands is a must if one plans to utilize the Cestra's high base accuracy effectively.
To counteract the pause that occurs between releasing and pressing the fire button, use fire rate mods like Gunslinger or Lethal Torrent
The Cestra's barrel rotates slowly clockwise when not in use, and spins faster as it is fired.
The reload animation consists of the player pulling out the barrel, flipping it and reinserting it back into the Cestra, oddly making the revolving barrel the magazine itself.
This may suggest that the cylinder may be composed of two separate batteries; one used to fire plasma shots while the other is collecting energy from ammunition reserve of the user.
The Cestra's may be a numeral-derived name, just like other Corpus-designed weapons released around the time: the Tetra, which has a barrel with four blocks attached and a "quad-chambered magazine"; and the Penta, which has a five-grenade magazine. Cestra may be a corruption of Sexa-/Sext-, from sixth, and has a rotating section with six blocks.
While Tetra- and Penta- are Greek numeral prefixes, Sexa-/Sext- is a Latin numeral prefix. The appropriate Greek prefix would be Hexa-.