I tried the tin foil Sunday but my back stop is situated where I was shooting at the wrong time of day and could not see it at 100 yds.
I brought out a scuba lead weight and heated it in the toaster oven for 30 minutes. Then for longer shooting times I resorted to the mentioned propane torch trick to reheat the lead target every couple of shots. When you hit the lead weight it absorbs some of the impact energy from the strike and glows longer.
It is getting pretty battered up now so I am thinking about making a diy purpose built mold and recast the lead into a custom shape and thus recycle it.
My bullet casting partner brought a 3400# lead weight off a junked out forklift . We could shoot at that for a long time but it would not foster much accurate shooting ..... it’s always something!
Three 44s