I picked up a 50 Beowulf upper about a month and a half ago and I'll have to say it is quite a bit of fun to shoot. Took it out, shot it at a water filled milk jug and blew the milk jug into 4 separate pieces. The thing is a wrecking machine! As others have mentioned, ammo is hard to find. From what I understand, AA was trying to get another manufacturer to start producing ammo. I haven't heard anything as to whether they were successful or not. IIRC it was Wolf ammo that AA originally was talking to for production. If you buy a wulf, your best bet is reload for it. Brass is also difficult to find and your best bet is to back order it through AA and/or have Midway email you a notification when it comes in and jump on it when it does. As far as the mags go, you can easily mod them with a file to match what AA sells if need be. True, there are more bullet options for the 458, but there are still plenty of 50cal pistol bullets available that the wulf will be happy with.