Very reliable pistol for me but I had a new jam that I can't diagnose. Was shooting an outlaw USPSA match this weekend, loaded mags to 17. I shoot production, typically only load to 10. Shot an array, one in the chamber as I moved to next array, reloaded, fired the round in chamber and one off the new mag and then got a double feed. Match video appears to show mag seated fully. Mags are about a year old and have a lot of rounds thru them, 20K, lots of matches hitting the concrete floor. But this is the first jam of this type for me and it didn't repeat for the rest of the match. Any thoughts? Thanks in advance.