mini-shells

I inherited some mini shells, never fired any, never cared for them. I was watching some youtube on mini shells because I was at work and didn't have any work to do. I have a NEF break action 12 that can use them, so I put them in that guns stock shell holder and that's where they have been for...

The title kind of says it. I am looking to buy some 12-gauge buck Aguila Minishell, but I can't seem to find any vendor that has them in stock. Thanks for any links. P.S. As to the why question, I've recently completed a Form 1 project for a very short SxS SBS. Recoil and muzzle flash is...