I have a left handed 11/87 that is about 10 years old. It is starting to do some weird things. Primers keep falling out of the spent shell and jamming the action. This is happening on reloads and factory 1 1/8 trap loads. I have 4 other teammates shooting the same reloads and it has never happened to them. They are also shooting right handed 11/87. I shoot weekly from Jan to Sept. Approx 3000 shells a year. Any suggestions? The reloads are AA equivalent and we have been shooting this load for years.