Picked up a Marlin 882 SSV 22 WRF and also a couple extra mags for it. None of them seem to feed very well, nor do they extract reliably with a magazine in the gun. Take out the mag and it extracts just fine. Seems like maybe the mags aren't made to very close tolerances? Anybody had any experience like this with their Marlin?
Start by double checking your gun stamp to see if it is 22WRF or 22WMR.
