[Sure Shot Mc Gee]

To be honest. I've never seen packaging like that before. Most unusual.
But I do have a few of those (red) belt carrier's.

Should I shoot it? Or separate it and head to the reloading bench?

Either way you choose to handle is OK. But since you reload. Perhaps change out their powder and resize their Necks only. Then you have 20 sure fire shells to hunt with is another consideration.