Interesting weapon. The 500 I believe is a little heaver than the 454 casul. The 454 delivers as much energy at 100 yards as the 44mag does at the barrel. Yup - its snappy - the 500 pictured has a short barrel, which really adds to the snappiness. If you look closely, the front of the barrel is ported, which helps reduce the recoil.
There would be two reasons for me not to shoot this weapon too often. 1 is recoil, and 2 is the cost. I believe the bullets are between 1 and 2 dollars each.
I'll stick with my 44. Yea it is a little lite for bear, but the 44 is a whole lot easier and cheaper to shoot.