Has anyone tried the Kvintor Darts?

I used to use them in my ignorant youth, not inferring you're being ignorant. I wouldn't use them today fearing I would do damage to my barrel.

I've used steel Umarex darts through my Magtech break barrel and they were awfully inaccurate; not to mention, that they probably messed up the breech seal on the gun, as they were quite difficult to be manually pushed into the barrel with a nail.

I hope I'll get my hands on the Kvintor Bliks one day... they're like armor-piercing incendiary pellets, kind of like .50 BMG API, but miniaturised and without any propellant