I don't think "nearly silent" is quite the right term given the following:
I can only imagine the report if the shroud was not present.A shroud?
A big bore airgun with a shroud? Are you kidding?
No, it’s true. The Rogue has a shroud, and from listening to it while firing the rifle at the recent airgun show in Malvern, Arkansas, it works very well. In fact, Lloyd Sikes reports in his blog over on the Crosman website that his wife thought the rifle was pretty quiet when she shot it. Of course, she’s been listening to all of Lloyd’s tests in the garage for the past four years, so compared to all that racket I’m sure this is a pussycat. Don’t think for a moment that the gun is silent. The muzzle blast is just knocked back to the point that you don’t have to wear hearing protection when shooting — even indoors, as they found out at the underground NRA rifle range a few weeks ago.
I think the shroud was the right thing to do. So many shooters who are getting into big bore airguns these days have little or no firearms experience, and many report surprise that an airgun can be loud. The shroud is not to make the Rogue better for your backyard, because it really isn’t made for that. But for user perception and to ease newcomers into the world of high-powered airguns, it’s a good thing.