The only stovepipes I've had with factory ammo were with the combination of 115gr UMC and limp wristing when I was first learning to shoot handguns. Other symptoms of limp wristing my G26 included the shell ejecting straight up in the air, over my head, or into my face or body. With a solid grip, my shells eject over my right shoulder and land in an 18" circle centered about three feet behind and a foot to my right.
I've had a few stovepipes, FTEs, and FTLs with some exceptionally light loads when I was learning to reload cartridges.
My guess would be that the magazine just needs broken in. Oiling the slide rails couldn't hurt either.
My glock ran good right out of the box, but it did break in and got even better after a few hundred rounds.