I have the barrel on a shocker and it is very accurate. I have a 12 inch which is very good for front players. I play back and had no problems with accuracy though. The price is also very nice. The best paint for it is proball or diablo.
Balls roll out but always go straight.
Inferno fits perfect and shoots great in it. Same with proball. It is well worth the cost and easily compares to a boomstick. I would recomend it to anyone. I must say that for the size, it accurate, but a little loud.