You can shoot it, but you can't have it!
The .25 Marauder is, in my opinion, one of the best returns on the dollar in the airgun world. They aren't expensive (in airgun terms) but they are very accurate and quite simple to maintain, with a sufficient punch. That said, they can be made much more efficient than they come out of the box. The "FFH" free flight hammer you often see here on yellow is one way, and there are a few other variations of this same idea. In fact, Joe Brancato will sell a new marauder with one of these super-efficient hammer systems installed.
Call me if you want to talk more about it, or if you get one and want to perforate something.