I bought this mold, one I have wanted for a long time, from this site. It is an older Lyman 2-cavity and looked ok on the surface, but the blocks did not mate perfectly; there were gaps between them when held up to the light.
Nothing ventured, nothing gained....so I went ahead and started casting with them anyway, hoping for the best. To my amazement they cast very decent boolits ! Seemed like the gap disappeared as the mold got hotter. The boolits dropped at 0.3585 (perfect diameter for me) and 168 grains.
I was real happy to see this old casting mold do what it was designed for !!
atr