most guns will not feed the mini shells. i suggest you try them and see you could always hand feed them into the chamber like a single shot

Hi John, it most likely will not reliably cycle mini-shells. Most guns will not unless specifically made to. You can always try a box to see, but it is unlikely.
Stay safe & have a great day!

Hi John and welcome. This will, just make sure to test your lot of mini-shells to ensure reliable functioning. Cheers and stay safe!