@ Neil, It could very well have been the ammunition. I know that if your powder charge is too low it can have problems extracting. It could also have been you limp wristing although you have shot your gun with other rounds without Issue so i doubt it is your hold on the Firearm. Lastly it could just be in need of a proper cleaning. I know some guns are just downright hatefull of certain kinds or brands of ammunition. I know that the CZ-forum guys recommend staying far away from brass ammunition for extraction issues with the CZ-75b until broken in. My Christmas firearm comes out of my mothers extensive collection and has had 26 rounds through it. Two ten round clips the day she bought it and the six at the factory. So its like new! It can hold 16 rounds +1 chambered but it was bought in 2005 while Clinton's no Hi-cap law was in effect so 1/4th of my magazines are solid plastic limiting it to 10 rounds. I will be replacing those with the original 16 round magazines soon.
@ Dimicus, To help keep the firearm in memmory I clean and field strip it often. Having a gun makes you safe like having a guitar makes you a musician. Its a tool and you have to familiarize yourself with its every function. You have to learn how to utilize it effectively in any situation which you may come across with said tool. I was fortunate to grow up around a bunch of Marines who loved to go shooting. I have learned to field strip and fire many variety's of firearms and had the pleasure of seeing an M-2 50 caliber Mg in action. So having not owned many firearms I have a long history of firing a great many of them. From rifles to shotguns to handguns I've played with allot just never had the urge to own one until I was in my 30's.
Some of the Best on this list of Guns I have had the pleasure to acquaint myself with and would always recommend are the...
Sig 226 (Sidearm of the United States Navy Seals) Great in both .40 and 9mm (Will own one someday)
http://www.gunshopfinder.com/sig/p226-navy-large.jpg
Springfield Socom M1A. Again great rifle and I will own one one day.
http://www.keepshooting.com/producti...6-riflebig.jpg
Ak-47 semi automatic Romanian import
Smith and Wesson 500 magnum. A .50 caliber round handgun that knocked the .44 magnum of the list of most powerful handgun category. I can tell you this one hurts to shoot!
http://lundestudio.com/wallpaper/sw5...ft-full-hi.jpg.