I had one for a few years, as well as a 940. The 547 trigger was not pleasant, I thought maybe it was a safety feature for the French police, requiring real intent to fire double action, but the response about heavy springs for hard primers makes sense. It was a fascinating design, left me scratching my head, how did they even think of that? The 940 was a huge disappointment, increasingly difficult extraction to the point where I kept a short length of 2x4 to pound on with a hammer while braced against the bench. For a while a S&W Forum member was distributing on loan, on a round robin basis, a cylinder tool to increase the interior diameter, until someone broke the chain and did not send it on to the next person on the list.