Welcome to the world of Dan Wesson. The only revolver that could compete with them in silhouette shooting was the Freedoms Arms and, at one time, you could buy three or four Dan Wessons for the cost of a single Freedom Arms revolver.
If you look at past tests of Dan Wessons, you'll see that they were shooting tighter groups at 100 yards than "other brand names" could shoot at 50 or even 25 yards. A 1.5" to 2" group at 100 yards was considered typical DW accuracy and some revolvers can shoot under an inch straight from the factory.
A good example is John Taffin's test of the M360. He lists 29 loads, including four factory loads, and not a single one is over 1.75" at 100 yards and several are under an inch. A fluke? Todd Spotti tested a different M360 and got almost identical groups at the same distance. Granted, few shooters can match Mr. Taffin's or Mr. Spotti's ability, but this points out what box-stock Dan Wessons were capable of.