I received them and they look good. 12ga falls in/out of them. I suppose that's normal. I'll probably wrap some tape around the bases of each shell, so they won't fall out of the adapter during manipulation. I've never heard of cops using them. They're for me.
I see these 12ga Shell Cracker (bird bombs) are $1.32 each:
http://www.suttonag.com/shell_crackers.htmlThat's significantly cheaper than this
Safariland 12ga Aerial Warning Munition, which is $13. I don't see a quantity specified.
Their
40mm ones are $38, but can go out to 300m.
Are there any other sources for 12ga "bird bombs"? Seems like they'd be more fun than chalk rounds, and less expensive. Sutton Ag states theirs should be fired from a barrel at least 20 inches long. Why is that? Propellant burn rate??
I suspect I'll probably end up in the DD reloading game. I'd like some factory-produced examples for comparison though.
At least I can now fire buckshot better than M576.