i use to get some leading out of the 429421 dependent on diameter, and lead alloy.
i switched to yonderings method a few years ago.
i fired a powder coated 429421 through a thompson contender through about 7 water jugs, load wasn't maximum but close.
barrel could not tell i really had fired it, the bullet i recovered could probablybeen used again.


THE BIRTH PLACE OF GERONIMO