Thanks for the input!!
Yes, mine was the target model. I suffered the same fate as apparently others have as well.....that being the very small set screw working it's way loose and the whole extension coming loose. I finally ditched the target setup and went standard.
Yes...the set screw inside the frame ALWAYS needs to be tightened (that is, before I put some lock-tite on it).
Yes...I tried SEVERL types of ammo (ad nauseam in fact).
Again, what really raised my temperature was the "attempt" IN WRITING by Smith and Wesson to call it "Inspected: Passed". Really?? Makes me wonder if they even tried test-firing it more than once. :banghead: