I aways heard the accuracy was definately lacking with them.
Accuracy wasn't too great but as a fun plinking round down in the family gravel pit they were pretty cool. For example, if you want to see a milk jug filled with water absolutely vaporize like you hit it with a Star Trek phaser then shoot one with a 30-06 accelerator. Check the FPS rating on those 30-06 accelerators and you will see why. LOL!