Sorry for the length on this one. There's a lot to go over, and I trimmed it down where I could! If you're short on time, take a look at my text review on my favorite gun forum, The Firing Range: http://forums.somethingawful.com/show...
The Dardick 1500 is one of the most bizarre modern guns I've come across, and with only 40-50 having been made, I feel very lucky to own one. The gun was based on an interesting open chamber system, allowing it to use both a revolving cylinder AND a magazine - yes, it's a magazine fed revolver! To facilitate this, special ammo called trounds (triangle + rounds) were developed.
While I like the open chamber concept in principle, the Dardick handguns were plagued with problems. They were finicky and unreliable, somewhat poorly made, and expensive. I honestly can't think of anything they do better than a decent semi-auto of the era. There were usability problems, too, and in the end, the company closed up shop after just a year of production (and 11 years of R&D!).
Eventually, I'll do what I can to make a shooting video, so please subscribe and keep an eye out for that. In the meantime, your input that this entire thing is a complete waste of your time is noted and appreciated.