I managed to recover the BCH and have them in a wallet.
Search your BCH address on
Blockchair.com: if you moved the BCH before it Forked into BSV, your BSV will be on the same address as your BCH now. In that case you'll find BCH-A too.
Some wallets
might also not understand Casascius' mini-private-key, in that case you'll have to convert it to a normal private key first.