Nightnemo, 2 things. First, run all CCI through it for the first several hundred rounds, keep mags loaded all the time even when gun is stored at home, break in the spring. Second, clean that damn thing, your slide is filthy. Your issue appears to be only ammo related. These rifles do seem picky about the ammo they are fed.
speedyquad, not sure if it's your mag(s) or the gun to be honest, but it is not feeding correctly which makes me think it's a mag issue. I could be totally wrong too, without actually handling the rifle it's just an educated guess.
I got (1) 25 round mag with the rifle and bought (3) more 25 round mags at a gun shop later. Of the (3) I purchased (1) broke while trying to load it the first time right out of the package. I sent it to Mossberg, a month later I got a brand new mag in return, it loaded and functions fine without issue and loads to 25 everytime. It took a month to replace it because the mags were on backorder even at Mossberg.
Maybe if we could get enough people to show interest we could get Magpul or Command Arms to build an aftermarket 30 round polymer mag (wishful thinking I know.)