Best thing I can say at the moment...unless you are a gunsmith who can spec-fit mags for optimal results, stay away.
There are several levels of issue, it starts with bad stock/action alignment binding things up, and gets more interesting from there.
If your rifle is not bedded, or pillar bedded, forget it.
C'est la Vie.
I'm not just Trigger Happy, I'm Trigger Ecstatic!!