Same for me. I had a few of the holes that pellets would hang in. I used my dremel tool and polished them all. Now the pellets just fall in, and out. And btw, that doesn't work on the WC. It has an o-ring that keeps them in place. I have 3 mags for the WC and all the pellets come out undamaged.
Something E Rowe does in one of his videos is really good advice. (well, a LOT of things are, but) I load the pellets and then push them out one at a time and inspect them to see if the mag might be deforming them in any way. If I find a deformity on pellet #6, I go polish that hole some more until they all come out untouched. I don't know exactly how much that helps the groups. But it makes me feel better knowing the pellet went in unmolested.
Crusher