Check out the bottom of this sprue plate. I just received a new 2 cavity 358-158 mold yesterday from amazon. Cleaned it up and starting casting with it only to see the base of one of the buttets wasn't cutting and forming properly. Also noticed it was scratching the mold blocks a little and after a bit of inspection I could tell it needed to be smoothed.
Put it on a stone to smooth it out and then realized there was pitting around one of the holes.
See photo.
That little pitting is just enough to cause the base of the bullet to not cut properly and to be a bit high.
Contacted lee as I always have and had to send them this photo. Here's there response:
I have several double cav molds and just borrowed one and cast about 500 perfect boolits. But, it would appear Lee is going to give me trouble and I may just have to return the mold to amazon. Just a little disappointed with them. Their QC on these molds is horrible.For my knowledge, what what forced through the hole, to cause the metal to be displaced out the back side. I can see the factory sanding marks on it from the factory, so it happened
after it left our facility.
Lee Precision, Inc.
4275 Highway U
Hartford, WI 53027
phone: 262-673-3075