Selling off a bit of my personal stock. These are Federal M1030 (head-stamp) 12ga rounds, AKA- "Doorbusters" or breaching rounds. Powdered compressed metal slugs help prevent collateral damage when making entry. Really interesting rounds which are fun to try out if you set up a target door* or keep a few in your SHTF gear*. There is an article about these rounds on the army.mil site here. $1.50/rd or $30 for box of 25. *Use at your own risk, not responsible for misuse nor legal liability. Know your local laws before use or transportation!