I had some issues with casting the other day. I had some lead finning on my boolits so I realize the thin lead fin scraped off along where the PC was. I know it's not the PC's fault and from crappy casting. I would assume it's nothing to worry about and won't cause leading and just to shoot away? This is the first run with my devistor replacement mold I sent back last fall being it was casting a third of a lip around every boolit with two different BH hardness of PB. The replacement mold fins with both PB I tried last year and seaps out through the pin. The new mold seaps lead so I have a lip all the way around the hollow point compared to a 1/3 of a lip with overflow. I'm missing my old mold. With The new mold you can see daylight on the outer edge when it's completely sealed around the cavity. Mold number three is on its way.
I made these about of 50 percent coww with a BH of 14 and 50 percent pure that was around 6 BH and added 2 percent pewter. I used my Lyman 4/20 pot and turned the heat down from 7 to just above 5 and didn't heat my pin to see if my PB was too hot. It got to the point that my hollow point cavity wasn't forming and I was still getting finning. I scraped most of it off with my fingernail and apparently still wasn't enough to the point the fin scraped off when sizing.
I wound assume they should still shoot accurate and not cause leading as long as I do my part with the correct sizing?
You can see it on the reds, yellow, and purple boolit. Not all did this just a few. You can see on the yellow it smeared down into the lube groove. I kept switching colors and bounced them in the same container to get the excess off that made the funky dark spots. The PC covered decent and passed the smash test. This was the first time I PC'd outside as well. I normally do it in the house to control the humidity. Inside I get a thick even coat. I had 53% humidity the other day and coverage wasn't great but went on. I can tell its a lot thinner coat than I normally get inside. When sizing I did spray the boolits with wd40 before running them through with a GC.