Autobody lead for round balls?

[pajeepman]

Picked up some leads that was originally for doing bodywork. Probably been sitting in a garage for 40 years. Any idea how it would work for making my own round balls?
Looking up lead like this, I would probably be better selling it and buying balls already made. What I cod find was 30% tin/70% lead and at least $20 a pound. I probably have 7-9 pounds of it.
Thoughts?

 

[Flintlock]

I think it's great cartridge handgun bullets but too heavy in tin for roundball in my opinion.

 

[hawkeye2]

I would look for some outfit that specializes in restoring antique autos correctly and see if they wanted it. Use what you get for it to buy some pure lead.

 

[Whitworth]

It's more of a solder alloy but would be good for adding to pure lead to harden bullets for other than muzzleloader uses.