Using lead to tap out dents. Huh. That’s a new one. I’m not even sure how that would work….maybe I can see it working on extremely thin areas?? I dunno. I’ve never heard of that. None of the people I know who do barrel work professionally use lead to tap out a barrel dent. I myself use a small, highly polished faced hammer, I rarely have to refinish after I remove dents, but some of the nastier ones definitely need finished after being raised and struck out.