Just got my e-mail straightened out so I can post,retired mechanic,machinest and part time gunsmith.Been casting for at least 40 yrs.got a question for you guys I've fired alot of 22 rf and never got a speck of leading in the barrel,soft heel boolet pushed to fair velocity with little apparent lube.I would think you would get gas cutting around the heel.Whats the story??Frank C.