No, it's not. 6 rounds of .38 special will not physically fit in a J-frame. I'm not even talking about containing the pressure of firing the round. There's not enough space for 6 cartridges to even exist. A K frame is the smallest you can make a 6-shot .38 or .357. the rims are almost touching.
Good luck with your gun. Odds are even with Taurus it'll probably work. But if it doesn't Taurus isn't going to take care of you. They say they will but from what I've heard they just jerk you around and send your gun back just as broken as when you sent it in.
Ruger seems to have more than their share of lemons leave the factory. The difference is they fix their mistakes. If their gun is defective they fix it and pay shipping both ways. If there's a safety issue they're the first to say anything about it. You don't have to hear rumors and then they get sued while they deny everything.
As for the OP, why did you even start this thread? I'm really not trying to be a dick or anything but even if we were talking about the PF hot gun of the week, nobody cares that you're going to buy one. If you bought one we're interested in your experience with it, good or bad. Get the gun and let us know how it shakes out.