This is getting to be such a headache. It was raining today so I decided to cast some balls for my .58 today. Last night I heated, lubed and smoked the mould. Today I got the stove out got it all fired up and the lead molten. Heated the mould and started casting. The first dozen or so had the usual shrinkage lines until the mould reached temp. But after a while I noticed that the mould was casting out balls with the parting line plus additional chatter machine marks parallel to the parting line. I re-cleaned and re-smoked the mould but still got the same lines.
I took some pics and call Lee and told them. I sent them and email and told them to resolve this issue for me. I don't see these lines as an accuracy issue but I would like them not to be there at all.