My son has a Rossi 3 barrel combo gun that we and his grandparents got him for Christmas.
Just a little note on the .243 barrel. In my experience with the gun, I have found that the barrel has to be very clean from shot to shot. With the first shot, I put the bullet dead nuts at 50 yards.
Next shot with a dirty barrel put it 2 inches below. I cleaned the heck out of the gun, and shot it again. The next bullet hit 1/4" to the left of the first bullseye shot.
It is a good little gun for a beginner. If you take more than three shots with it, the accuracy goes way away.
Just my experience.