STARTED TINKERING WITH MY 4 CAV. 429421 LYMAN CASTING WITH STRAIGHT WHEEL WEIGHTS. AND THEY ARE ALL COMING OUT UNDERSIZED. .iT HAS BEEN QUITE SOME TIME SINCE I WAS IN ON A SIMILAR THREAD. SOO.......... WHAT DO I NEED TO ADD TO HAVE THESE PUFF OUT JUST A WEE BIT? OR AM I WASTING TIME AND SHOULD CONSULT ACCURATE FOR A CUSTOM MOLD??
WHEN I SAY UNDERSIZE, I AM SAYING .428 TO .429