I cannot insert a mag with the bolt closed it will latch on the front but it just won't go in far enough on the rear to latch, if I remove one round it will close with out a problem. Its also seems to jam the odd time, the round gets caught half way out of the mag. It will do this with all 4 mags, its the first problem I have had with the rifle in the 2 or so years I have had it and its seen a fair about of ammo. One thing I have noticed is that the trigger group is sitting pretty far down in the stock, could the stock have compressed?