farmbif, I cast some more slugs using pure lead today. They are the same size as the ones cast with 95/5 solder added. I loaded a few using 3/4 oz. shot data with 16.0 grains of Unique.
My new rifled barrel for my Mossberg 500 20 gauge got here today. I'm going to try both of the cast slugs in the rifled barrel and the smooth bore. Probably start out at 25 yards. Just to get an idea of slug placement on paper. Lyman is closed for Easter holiday so I couldn't talk to them about the ring in my mold. I'm going to call a machinist friend and ask if he can do something to fill in that part of the mold. Doesn't hurt to ask.
I'll let you know how things work out.
Thanks for the info. really helpful
JAMES
JAMESGR