Hit's per second of Phantom's Tempest?

Unless it was changed, I think it's 240 ms.
Last I tested, I got off 20 siege volleys in 5 seconds, which is about 240-250 ms.
I haven't played my mech in about a year and a half, but I don't think siege's delay was ever changed.

It was 5 seconds with transform-in and transform-out., that's why it was always faster then 250ms (5000/20).

But now Siege is unlimited, record a 60fps vid of it and you'll see the numbers popup with an average of something that comes nearest to 210ms.