I own a Sig P229. I bought it with a .40 barrel installed. I now use it with a .357 SIG barrel. I would like to add it to my CCW. Herein lies my quandry. Can a firearm that is registered (blue card) be added to my permit as a .357? Do I need a second blue card for the second caliber? Can I even get a second blue card for the same gun? Ideally they would register this as a .40 S&W/ .357 SIG on one blue card, I guess. Obviously I would need to qualify with both calibers if I wanted both on my permit. Any help would be appreciated.