mate of mine i go shooting with is having problems with is extrema2, the problem with his is that when he shoots the first shot the other 2 cartridges in the bottom both jump up at the same time causing it to jam up, this has starting to happen every time we go out, and i got an extrema 1 and have not had any miss fires in the 3 years that i have been shooting it. think they should have left the gun alone after they made the first extrema because the second one seems to be having a lot of problems