I've had a couple of calls from Jason, at our State Representative's office, Foster, and he assures me there is no reason they can't ship the ammo. He also assured me that his office would make sure official State letters would be sent to that effect to correct the problem if it persisted. It is really good to know your Representive's office is working on maintaining your rights......and keeping you updated.
An update: I just checked Sportsmans Guide, and the .500 ammo is still banned for shipping to Michigan, both on their website and customer service. I called Jason, and he's getting the proper official State letters sent. It is not a major personal problem, but it is an additional infringement on our rights.
Pete