Has anyone ever shot this? Just wandering how it performs and if it is anything  special.

I might get a box just to play with. Thanks!

I don’t see it being worth the cost.  It doesn’t seem to do anything better than what a quality 147gr hollow point can do.

Seismic Ammo at this point is unverified test ammo.  They lack any ballistic data that adheres to established FBI BRF or IWBA testing protocols.  As such, there is no proof that it is a viable ammunition for anything other than range use.  What we know are a couple major points-

1. At 1.38/rd, it is substantially more expensive than the two top duty/defense loads on the market, which are the Federal HST and Speer Gold Dot GD2, which cost $0.80/rd.  
2. Seismic advertises that their ammo “hits harder” and “deliver far greater momentum than any other 9mm”.  This has been proven to be irrelevant for pistol ammunition.  Kinetic energy (KE) transfer or deposit is not a major wounding factor with pistol bullets, as the only factors are the actual path of the projectile through the body, and the depth of the projectile within the body.  That means that their rounds cannot do anything that a modern premium duty/defense load can’t.
3. It is extremely improbable that a small start-up company with minimal resources could develop a round that drastically surpasses the capabilities of bullets created by a billion dollar ammunition and aerospace defense contractor.
4. This is all a recurring theme in the gun world where some company goes to one extreme or another to market some slick new snake oil ammunition.  We have seen this with companies like LeMas, Liberty and G2 Talos  making lightweight, “hyper velocity” rounds that are supposed to act like rifle rounds (but don’t), Magsafe, which uses both light weight and pre-fragmented bullets, and G2 RIP, which is supposed to be like a fragmenting buzz saw (but isn’t, because fragmenting is bad for pistol rounds and they perform extremely poorly in barrier testing).  They’re all marketing schemes that have results fall way short of expectations.  

If Seismic works well in your gun and somehow offers an advantage for some kind of recreational or competition shooting, then proceed as you desire.  For defense/duty, it should be immediately disregarded until hard independent data is generated to prove they are viable.

I recall them stating 7" PCC would be subsonic, but they were still working on 16" to verify.