Gnoahhh, I'm bad about that...not using precise terms, when I say slugging...I mean pound casting the throat. A well fitting dowel from muzzle to about a half inch ahead of the chamber, then dead soft pure lead beaten in with a home turned delrin punch to fill the front of the chamber and throat, a half inch or so of the rifled bore. I end up with a lead slug negative of the chamber front/throat/leade. Is it accurate? I don't know, but I got off the cerrosafe bandwagon long ago after filling a tiny groove in an old Marlin frame with molten cerrosafe. Two days with dental picks.
