White powder/crystals on cast Boolits

[Theditchman]

About a year ago I cast up a load of different boolits for ml shooting..now it seems that some of them have this white powder/crystals on them like a mold or something. They dont look good at all...some that I put in sealed containers still look like new..What is this ??..anyone know?..or should I just recast them

[redhawk0]

could either be mold (unlikely)....or lead oxide. I'd just shoot 'em up. The lead oxide is only going to be present where air has direct contact with the boolit. The sides won't so you won't have any issues shooting them.

redhawk

[Dusty Bannister]

Most likely lead oxide due to being stored in an open container in a humid atmosphere. The danger is now in breathing the white dust. Follow normal lead handling procedures moving forward.

[Theditchman]

Cheers all

[dondiego]

If any lube, especially Crisco, got into contact with any of them it can form a moldy looking sheen.