Has any body out there had a problem with the Powerbelt. The first time that I shot the 295 grain aero tip with two 50 grain pellets, I was at 100 yards. I checked the holes and the thing was tumbling. (But it was a two inch group) I just did not understand why they were tumbling. All most every body on this message board says that they shoot great. After all the bad performance out of the Powerbelts I went home and took my breach out, and then I took the plastic off one of the bullets and stuck it in my barrel. I dropped it and it did not even touch the riffling on the gun it just went all the way through and hit the floor. I double checked the package and they were for a .50 cal. It is just mind boggling. Has anyone out there have this same experience?