I've been casting since 2000, and had various molds of different brands and calibers. About 6 years ago I ventured into casting for my bolt and semi auto 223's. I bought the Lee "Bator" mold and cast bunches and bunches of boolits with it. When Lee came out with the C225-55-RF, I bought one in the 2 cavity. I've cast many many boolits with it and learned to get good results with it, but it is kinda slow going to make a big pile of them, so I stepped up and got a 6 cavity and I am having troubles. I have done all of the proper mold prep, but continue to get wrinkled boolits I started out at 760° and went to 780° and stopped there because I was getting frustrated, I will take it up again on my next day/morning off. In thinking back I think I did not heat the mold long enough. Remembering back my "Bator" Mold is a six cavity and I had to go right along kind of quickly, pour, let the sprue crust, open and dump bullets close and right back for more to keep the mold hot. What has been your experience, I am open to all constructive advice.
Thanks