Moofy; Yup, we were doing that 40 years ago with handgun bullets and it worked well. What I like about this alloy is there are no extra steps to accomplish (I am lazy!!!). My real concern was that something this soft would lead the bore at higher velocities than what was originally tested by mt_sourdough, but that seems not to be the case. Of course with your method that issue is pretty much a moot point.
"Overkill.............is WAY underrated."