Disc Diameter Variation

[jspatz1]

At Oklahoma City we experienced some persistent disc magazine jamming that we had never seen before. After getting access to a couple of field discs, we found them to be slightly larger in diameter (around .050"-.060") than our own discs, or any that we had ever handled before at other events. After finally understanding the problem we were able to resolve it with a modification, but I thought I would try to gauge how common this variation may be by asking if any other teams have observed the same thing.