Nerf Vortex Pyragon Slam-Fire Take 2

My original Pyragon slam-fire vid you couldn't see the discs flying, and all you could see were disc impacts on the curtain and hear very loud rapid-fire noises. This new vid allows you to see the discs hit the lace in front of my window, and also lets me accurately measure the time between first and last disc impact.
Anyway, the vid:

I empty the 40 disc drum in 5.87 seconds, meaning a ROF of 6.81 discs per second. Note the disc spray, though, and this is at a 1-2m range.