Samourai - again, I am not sure what it is that you want to know. You should try to make your questions more specific. Aside from what was in my first answer, I cannot think of anything to tell you except the ballistics of the 9mm CCI shot round.
CCI Part # 3706
Shot Size: #12
Approximate weight of shot and sabot together: 64 grains
Muzzle Velocity for a 4" barrel (approximately 120m/m): 1450 fps (approx. 442 mps)
This is all the techical data supplied by CCI. For overall ctg. length and overall cartridge weight, measure it from one of your cartridges.
If there is something I have missed in my two answers, please ask the direct question of what it is you still need to know and I will try to help.
Pistol shot cartridges are not unique or strange at all. SFM in France made shot cartridges in both 6.35mm Browning and 7.65mm Browning. The United States made shot cartridges for survival purposes, in .45 Auto (11.25m/m Colt) during WWII, and they were made commercially, especially for the Thompson SMG before WWII. Revolver shot cartridges and shot cartridges for rifles (rifled-bore long arms) have been made off and on for the last century and more, almost as long as metallic ammunition has been made. Sometimes the rifle rounds are referred to as “forager loads”
Not all pistol projectiles with shot in them are made to act like a shotgun shell - that is, for the pellets to fly separately and spread to a specific shot pattern. Some bullets loaded with shot pellets are more like frangible cartridges, not made to come out of the bullet jacket until it has entered a target. These are generally made, like the Glaser safety slug, for self defense purposes, rather than small-game hunting, and are designed for low richchet, low penetration and rapid expansion. We do not refer to these types as “shot cartridges,” but rather as “bullets with pre-fragmented cores.”