Produced by the Federal Law Enforcement Training Center, this DVD video discusses conventional, specialty, and exotic shotgun ammunition. It describes the capabilities and shows the effects of the various rounds on an assortment of targets. It is a fascinating look at all the various exotic shotgun ammunition types and their effects. Some of the rounds shown are Dragon's Breath, Dragon Slug, Armor Piercing, Flechette and Buck and Ball.

Full details available at: http://thehistoricalarchive.com/products/c133.html

The website link above claims that the video is 19 minutes long, but it's actually only 18:16, and the last 45 seconds is credits so it's about 17:30 of real meat. It's a well-produced video, but I would say that the first 9 minutes is sort of a string of obvious moments since it's all about the relative terminal effectiveness of #9 birdshot, #4 buckshot, and rifled slugs - the results are predictable. The second half on specialty ammo is interesting, and I now know to keep an eye open for the Powerplus "Dustbuster" loads since I hadn't heard of those before and I do collect breaching rds.

Anyway you can see the whole thing here for free, as some non-profit group has had it posted for over 1 year:
http://www.youtube.com/watch?v=ievbU3xIYGQ If the writer of the above for-sale post owns the rights to the video, you may want to look into that.