Copycat blocks filled with tin materials should exhibit ricochet properties. I spoke with someone from Create: Copycats+ and they said that since you guys added the ricochet effect it's up to you to add compatibility unfortunately. Apparently they have a policy of only adding vanilla block properties by default.

Bulk closing along with several similar issues:

Currently we don't have plans to support Create, it is very cool but we know nothing about it mechanically. It seems to require a lot of tags, but it will need a much larger and thorough look that we will hopefully get to at some point, or somebody beats us to it with a compatibility mod, which would be great!