I had recently read that newer Glock 21 has had some problems with feeding Federal Hydra-Shock and Winchester SXT with newer magazines. The article stated that the 2nd or 3rd round was hanging up on the feed ramp. I have recently switched from a Glock 22 to the Glock 21, and have not had any problems with 230 gr. hardball ammo, but as of yet to fire any hollow point type ammo through it. (hey, for $17.99 for a box of 20, my wife would kill me so dead you'd have to bury me twice if I went and bought a hundred rounds) The article went on to say that when the Glock 21 was fired with the above stated ammo with an M3 light attached only aggravated the problem. I carry my Glock 21 with an M3 attached on duty so you can understand my concern. I was wondering if any other "Glock'o'matic" shooters out there had heard the same thing or had experienced this problem. Any feed back would be appreciated. Thanx!!!!!!!!