Shotguns are by far the most versatile guns on the planet. They have so many specialty rounds that it will make your head spin. There are the normal birdshot, buckshot, and slugs, but also some pretty exotic rounds like dragons breath, flashbacks, and these barbell slug rounds.
These rounds are manufactured by the Ballistic Machinist, Tim Hamilton and cost 24.99 for a box of five so they are not cheap, but boy do they pack a punch.
The round was originally designed to tumble but after ballistic tests with TAOFLEDERMOUS they were actually pretty stable, only flipping once and then flying sideways.
Here are the specs from the manufacturer:
Manufacturer: Ballistic Machinist
Shell Length: 2-3/4″
Slug Weight: 505gr
Slug Type: Steel Dumbbell Slugs
Gauge/Bore: 12 Gauge
Velocity: 1525 Ft/s 2600 ft/lbs
These slugs are made from solid steel. Not to worry the O-rings keep the slug centered in the barrel. The steel slug does not contact your barrel. These slugs are safe to shoot from a smoothbore or rifled barrel shotgun. With the large mostly flat surface, when this slug hits it starts to tumble like a huge 5.56 bullet. With its 2600 ft/lbs of muzzle energy, it’s like turning your shotgun into a cannon that will destroy whatever is in its path.