Had a recent conversation with a State Trooper friend of mine. He said that when he joined the State Police (about 15 years ago), as the department switched from Beretta to Glock, there was a firearms instructor who told the Troopers that Glock pistols were not designed to carry a full magazine, plus 1 in the chamber. If I understand this correctly, it is not recommended to insert a full magazine, chamber a round, then remove the magazine, insert another round in the magazine and reinsert the magazine into the firearm. I don't see anything about this in the manual. Anyone have any thoughts on the why?