Tha nks G Wilikes about the lead.
So along with everyone else, shooting lead in a Glock is not advised, but many do and it would not be the cause of a feeding issue.
( I think my feeding issue is with a wierd length or something as I did not reload them.)
Good luck with your Glocks.
P.s. - As I did get a round stuck in the gun (my ammo fault - not Glock), the range officer said, "good thing about these glocks is you can use them as a hammer too!) As he was kinda bangin on the back of the slide - on carpeted shooting bench - ok. I just kept pulling on it and it came back and I shot it off.