It sucks that you have to list them, and can only have three to choose from.
By law the serial numbers of the specific guns must be listed on the license. They can be changed (additions/deletions) during the period of the license, with the approval of the issuing authority (and a small fee, if imposed), but such changes (if allowed) won't extend the length of the license. A common reason is to remove a gun that's been sold/traded for a new one, and to list the new one.
The
number of guns allowed to be listed is left up to the individual issuing authority (Sheriff, COP), though. Granted, the license only has 3 lines, but I've known of more than 3 guns being listed on a license.
Kind of like how an issuing authority is free to list additional restrictions and limitations on any particular license than those listed in the original standardized state application (mandated form). Hint: There's a lot of room on the back of the license, and I've even see an agency in one county "double" the size of the standard card, making the reverse side of the license twice the size (needed for the long list of restrictions).
I've also known of issuing authorities limiting the number of approved guns to as few as 1 gun, and even restricting caliber, type, etc.
Things got more complicated back in '99, after a licensing issue arose with an issuing authority.
To the OP ... Suit yourself, within whatever guidelines and policies may exist with the agency authority signing your license. For example, does the agency issuing your license allow .44 Magnum for a
CCW weapon? I've known of those who wouldn't.
You're only talking about a weight difference of a couple of ounces between the 627 & 629 PC snubs, but you have to ask yourself whether the difference in overall recoil management & controllability between the 2 guns, and the 2 round capacity difference, is significant to
you.
FWIW, I do rather fancy the PC 627's, 327's and M&P R8.