I posted earlier that I has started casting some 148gr DEWCs and there was a request for some picts. I did a second session this afternoon and did 526 boolits in about 1 1/2 hours. I had to throw about 20 or so back and the others came out okay. They all have a sort of an inverted "U" shaped mark in the side away from the handle just enough to see the mark, so I thought it might be cold metal, no, so I tried 850 degrees or whatever the Lee pot goes up to and that wasn't it, so I tried casting real fast to get the mold real hot, that wasn't it so I tried letting the mold cool off a bit and that wasn't it either? I cleaned the cavities very well and looked at each with a magnifying glass and there were no marks of funny things in the cavities? So if anyone has seen this please let me know what you think might cause the marks?
I tried shooting some of the 1st batch and they all shot fine with the marks and everyone has them? Anyways here are some picts.