Please look at the following pics.
Two different bullets, cast from Lee 6 cavity molds. The 3 bullets on the left are from a group buy and the 5 on the right are from a ranch dog 30 cal mold.
The smaller 30 cal bullets were cast first, then the rd bullets.
Both molds were pre-heated on a hotplate. The hotplate coils were red.
The alloy was the same, the temp was the same. Alloy was similar to Lyman #2.
The smaller bullets casted well right away. The ranch dog bullets show a wrinkle on the grooves and an occasional wrinkle on the nose for the entire session.
The alloy was hot enough to start frosting on some bullets. The casting was done from a Lee 10# bottom pour pot.
My only guess is the rd bullets, being larger, needed a more plentiful supply of alloy. I am suggesting the sprue holes are too small to deliver the larger supply of lead to the larger cavity. Would opening the sprue holes help?????
I can easily open the sprue holes, but I would like some feedback first.
The sprue holes are .154 -- #23 drill.
Any ideas?????