I have two wadcutter molds that I shoot in my 38sp/357mag revolvers. A wore out two cavity Lyman 358495 and a Lee six cavity 358-148-TL.
On the Lyman the sprue plate didn't sit flat because the area around the screw was actually worn at an angle. When I would tighten the sprue plate screw, the plate would actually pull away from the mold. So, (this is where you all gasp audibly and judge me) I took a hammer to her, I took the plate off and bent the corner just past the screw hole so that it sits flatter when casting. Also one of the allignment holes had wobbled out, with a hammer and a center punch I nudged the metal back where it needs to be, and then I stoned off any high spot left from the punch. She will now cast a nice bullet, there is still a little flash but nothing like in the beginning of our relationship.
The Lee makes good bullets, really fast, that are just as accurate as the 358495. I have stopped using that old wore out Lyman mold, she just doesn't do it for me anymore.
I should get rid of that broke down old mold. I don't need two wadcutter molds. But, I have beat her with a hammer. I'm a mold abuser! No one can KNOW my shame. I'm just gonna restrain her with a zip tie, put a Ziploc bag over her head, and shove her into the back of the closet.
I listen to a lot of Stand Up Comedy and "True Crime" pod casts while I cast bullets. It may be bleeding into my literary style.
Josh