A new RCBS .44 Keith mould should be waiting for me when I get home. This is the first steel mould I have purchased or used. All others being Lee. I saw recently a thread on the old site which had some posts on preping a new mould but I have not been able to find it again. The thread had various ways of preping a mould from boiling in soapy water to brake cleaner. What is the best way to prep and break in a new steel mould if any?
Thanks,
Bigscot