.75 inch rebar into 1.5 inch pieces would make good ammo I bet.  I think it would weigh about 90 grams

Oh, I why people here are so lazy they must use carborundum wheel to cut rebar. I would love to make ammo from these piles of scrap, which are mocking me from workbench...

The only reason our bikes are there (mostly) when we come back to them is that those uge wirecutters are a bit obvious when carried around. We are more afraid of the ones with 30 cm to 1 meter arms. (1' to 3')

There have been a few posts on rebar ammo before, use it as searchword and you should get even more inspiration.

Willeke

Don't pay for it. Dawdle around construction sites and after work, ask for some scrap rebar. They usually give you some, as it looks like the only mean to get rid of you . Works for me, I make throwing spikes out of it, it is too much work for something what you sling and never find again.