Originally Posted by Azathoth
Materials cost is the issue that I see. You could make BB's in the 0.5-2.0g range but the cost of manufacture and the materials are going to be rather high, and then there is the issue of field owners allowing those BB's to be left behind on there property.
No issues there, bio-inert, no toxins. Like the Silicas, they're basically rocks.
The ones pictured are .66g. I have other ones in .36g in another carbon based material that is black. I'm also having test versions made in 6.00mm to see how they run.