Woodreaux your method of casting the lead is perfect for the outcome you want. Though Lead vice jaw covers do look the part though if the truth be known I prefer to use Red fibre jaw covers my self because they are quick to change and take a lot more rough treatment than Lead. And when the fibre gives up and starts to disintegrate you can replace it with wood or cork, cork versions are particularly good for holding plastic without marking it and if the cork layer is thick enough you can hold a gun stock without marking it.
