Had a failure to feed today at the range with my 17g4. I was shooting Remington 147g, and the slide wouldn't go all the way forward and the round was half fed at a slight angle. I had to eject the magazine and only then I was able to clear the round. I checked the spring and feeding path and everything seemed ok. I'm going with a ammo malfunction on this one. Just want to hear your thoughts, and similar experiences.