Good evening to you!! You can load a shorty slug in-between two full size shells as long as it's a pump action shotgun. And that shotgun is capable of cycling Shorty's. A short shell won't cycle a automatic because of the light loading not producing enough pressure. Hope this helps. Have a good rest of your day.
🇺🇸🇺🇸 'merica' 🇺🇸🇺🇸

Absolutely, as long as the pump shotgun is capable of shooting/cycling the mini's!

Hi Tim, yes you can. This will work in a pump action, but the short will not cycle a semi-auto shotgun.
Stay safe & have a great day!

Hi Timothy and welcome. Yes, you can, granted the shotgun will cycle mini shells, this is not an issue. Cheers, stay safe and enjoy!