Hello all,
I'm relatively new to casting and just started with a Lee .30 cal, aluminum, 230gr two-cavity mold.
Pot is an RCBS 10lb bottom pour
The picture above shows generally what's been happening with all my cast bullets, some better than others. They keep having these areas that don't seem to be getting fully filled out or large creases.
I've tried temps from 700 to 900 degrees (as measured with an in pot thermometer). I've varied my casting rate and gotten the bullets to frost, but still does not totally fill out to a solid bullet with no creases.
Cleaned the mold, tried smoking and no smoking, totally changed the alloy, still having it happen.
I'm either a dummy, missing something, or need a new (new) mold. . .
Ideas?