During a discussion about the different size magazine available for the Walther P99, some one posted some info about testing done on glocks and 10 round magazines.
Maybe others have seen it, but it was new to me.
Glock 17 Endurance Test: Month 13 http://pistol-training.com/archives/6459
The next time someone talks about that no one needs a bigger magazine in a handgun, you might tell them about this:
The pull quote:
"everyone’s 10rd magazines tend to be less reliable than their standard capacity version"
So one of the reason that I need more than 10 rounds is that a 10rd magazine is not as safe.