OK how long have you had the pistol, and did you clean it 1st? Bet you missed a spot...the striker assembly/channel, underbelly of your slide. Remove the plastic stopper thingie from the back of the gun, and hose it all out REAL GOOD with a plastic-safe cleaner, such as GunScrubber, or, in automotive section of WalMart, contact cleaner (usually right beside the brake cleaner). Pay attention to the firing pin channel also!! My option is for the electrical contact cleaner...it says right in the description 'safe for most plastics'. In any event you want to hit it with a lightweight spray oil after cleaning it right?WRONG !! So says Taurus CS....leave it dry. Won't hurt a thing. Or, if you're bent & intent to oil, try Ballistoil (spelling may be off) spray oil. There's a newer spray Kroil (Kane products) out called Micro**** something or the other, it's good too. CLP...no go. Rem-Oil...no go
Again... so says a CS Rep at Taurus! Guy had been shooting 40+ years.
And, try a bit different ammo if the ammo you were shooting does it again. Taurus claims its NOT a known, wide spread problem i.e. 'defect', time will tell. In any event traditionally, 85%+ of all gun action problems can be resolved with 1) proper cleaning and 2) proper lubrication
Hope that helps!!