Just joined the team and I've been trying to find some troubleshooting threads. However, after searching for a couple of days, I was hoping someone could point me to the right one. I just started casting 9mm's with a Lee 124 gr two cavity micro grove mold. One of the cavities throws perfect boolits almost every time starting with about the third fill. The other cavity (closest to the handle) will not produce a good boolit. I have degreased, cleaned, smoked, cleaned again, heated, cooled, etc. and can't figure out what is going on. I will try to post some pictures, but the second cavity will not fill all the way up and when it does, the micro bands are rounded and not properly filled out. I thought there was beeswax getting in from the sprew plate pivot screw, but I no longer think that is it. I got a few good boolits to drop after switching and filling the problem cavity first, but it is still hit or miss. Could this be a situation where the sprew plate and mold are too tight and air is not able to escape the cavity????? If so, How is that addressed?
Here are some pictures. The boolit from the good cavity is on the left and the boolit form the problem cavity is on the right from four different castings side by side:
Any help would be appreciated!
Nate Rhoades