We made a 310 Cadet die set for a company called Western Firearms on a custom basis. Dies are available for purchase through them: Contact Us - if You Need Assistance from Western Firearms - Our Expert Staff Can Help with All Your
We do not make a mold specifically for the 310 Cadet as a standard item. If you would like one, we would be able to make one for you on a custom basis. Please see the link below for more information on having one made.
https://leeprecision.com/custom-services/custom-bullet-molds/