Shooting jacketed bullets through a barrel to remove lead not only doesn't work, it can be dangerous, if there is enough leading it can cause excessive resistance to the jacketed bullet and raise pressures to a dangerous level. The Lewis Lead Remover works, but the copper chore boy works better and much faster, when I was shooting competitively I shot swaged lead bullets exclusively, and would spend a lot of time getting the leading out, the chore boy will clean more lead out in a couple of minutes than a Lewis Lead Remover will in 30 minutes. Shooting jacketed bullets will not remove lead from the bore.
Ammonia is a common component in some bore cleaners, ammonia will work on copper fouling, it has no effect on lead at all.
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