I do have a stash of some old sheet lead from when they used it for pipe flashing on roofs. Great idea, I hadn't even thought about or remembered that I had it. I guess that now that it causes all kinds of problems you probably have to have a hazardous material certification to buy any assuming that it's still made. Thanks for the idea.I found a length of old lead pipe that I cut to use as extra barrel grip for vise. Too bad AFTER my fun with .270TH build. The lead conforms to any barrel contour and just provides better grip. When it breaks down, some great jig material!