I took a 1 inch copper T split it down the length used a c channel and hose clamps to hold it back together. Then I took an old broken screwdriver notched it to hold and poured lead into it. It is very light soft and I use it as a hammer for other stuff besides opening my sprue and tapping pellets out. When its messed up just recast it.
I will be making one those lead hammers. Great Idea!And I will continue to use a wood hammer handle on bullet molds.