Reusing Lead: Why is My Ingot Oxidizing?

[YoungPhysicist]

Recently I've been recycling lead from old bullets.But everytime I recast the molten lead to an ingot, its surface is oxidized, therefore I am losing lead every single time I reuse it.

Are there simple solutions to this without using an atmosphere of noble gases?

 

[Borek]

No.

(add all possible disclaimers about how lead is toxic and dangerous)

 

[Nik_2213]

Worse, it may not be pure lead. The possible presence of alloyed metals etc raises the stakes...