I finally got around to trying out the 556 Nato mold. I had made up some Lyman #2 just for this mold last week.
I couldn't keep the mold hot enough. The spru was harder and harder to cut each cast - no matter how fast I tried to run this thing. I kept having to put the mold on the hot plate (spru side down) to warm it back up.
I had problems with wrinkles because of the mold going cold and the first cavity filled was cutting high making a hump on the base.
Anyone have any suggestions? Anyone having the same issues?
Thanks.
Edit to add: I started with the lead at just over 600 and kept raising it to 700 and still had these problems. I also started with the mold 1/2 inch from the bottom pour spout and moved it up to 1/4 inch. I also varied the flow of lead from a drbble to gushing out (and various flows in between). Still couldn't keep the mold hot.