I would think it's the PEOPLE buying large amounts of ammo that is creating the shortage!Obama has DHS and military buying large numbers of rounds to keep them off the market 9mm,5.56 308.
Other options in production
Taurus International Manufacturing Inc
you might really like this one
Ruger® New Model Blackhawk® Convertible Single-Action Revolver Models
I have the Blackhawk 45 Convertible. Two cylinders, one for 45 Colt, one for 45 ACP. I plink with 45 ACP hardball, for serious use it carries the 45 Colt. With a Blackhawk the 45 Colt can be uploaded to 44 magnum levels (and above), or downloaded to the relatively weak Cowboy Action rounds.Just a couple weeks ago I purchased a Ruger Blackhawk Convertible, in a .357 magnum/.38 Special, with the extra 9mm cylinder. I haven't gotten the chance to shoot it yet, but the main attraction for me is just the fact that you can shoot three of the most popular handgun calibers through the same gun.