If your looking for a good solid predator rifle . I would get a 5mm hands down. I have one with a suppressor on it. Its a super fast rim fire bullet. I use mine to kill hogs with at night. I wanted something quiet & accurate to kill as many hogs as possible really didn't even care if it killed the hogs. But sure enough first night out I killed 3 that were over a 100 lbs. I'm dead serious check out the ballistics. Super fast & very deadly. This caliber will drive nails. I thought you wanted a pellet gun.