How many times can a shot sleeve be Re-Inserted w/ a new barrel?
Typically the maximum number of times we can Re-Insert a sleeve is 4. We are restricted by the distance from the ID of the sleeve to the ID of the cooling channels. As we remove the shells each time they must be honed to a smooth finish. This removes stock between the ID of the shell and its internal cooling circuit. Eventually the internal weld fillets will reach its minimum size and the sleeve must be retired.