RE: Magnetic Thunderball NAP Nock
I just got mine in a few days ago from Bass Pro and tried them out. They shot really good. I didn't notice any change in how far they entered my target. I have not chrono'd them yet so I don't know if I am losing any speed. The arrows also seemed to fly much straighter.....not sure why, they just seemed to. I am going to switch for this upcoming hunting year and I will see if there anything I don't like about them!!