Hi, I'm new with guns and I got myself a bersa thunder 22 as my first gun, the 22 being a cost effective caliber. My problem is my bersa always jams. I made a lot of searches and reviews and I know that only hypervelocity loads are good for the bersa. PB Dionisio recommended I use the remington yellow jackets 33 grains hypervelocity 22s yet this too had failed to cycle the gun. After the first shot, the round is stuck in the barrel. I tried using the remington viper that came free w/ the gun when I bought it and this worked flawlessly. I had another box of vipers given by a friend long time ago and this too failed and jammed the bersa. What should I do? I cant enjoy the gun and being a newbie it kind of gives me worries if my gun is defective? Help is appreciated.