Ever play with any of these?
No, a few years ago I thought of ordering flechettes but I ended up sticking with 9 pellet 00 buck or 1 ounce slugs. Dragon Breath looks fun but catching an enemy on fire would probably look worse to a Grand Jury or trial Jury than nailing them with 9 54 grain pellets @ 1400 fps.
That is an entertaining video though, ha does a nice presentation.