I had one; I like the larger capacity mag on these over the standard Tok, but I was unable to shoot it accurately. It was a lot of fun though; cloud of fire, noise, concussive effect and recoil!! Super well finished, and reliable. So, why did I get rid of mine? Wanted to shoot PPC and IDPA; 9mm or larger required. I miss it a bit, but a month ago picked up a GP100, so will be loading up some .357 mags for some noisy fun!
Our indoor range will be banning steel core ammo in the near future (check with your range if it is allowed, most have banned surplus ammo); it has been gouging our back stop, but it will still be allowed on the outdoor range.