[Hob Hayward]

Ok so my bro finnaly got a new ongoose body with eye covers and its pretty darn good, but randomly it'll jam against a ball in the breach, but not break it. So when it stops shooting, I turn it off, and yes look into the front of the gun to see what it is, and I see a ball is being held halfway into the chamber by the bolt, so I have to recock, or just pull the bolt back a bit and then the ball wil fall in and it'll shoot again. Thing is, it doesn't jackhammer at all ever...

I have a hypothesis, on occaision while firing without air quickly it does a double fire, like two in uber rapid succession, could this be a t-board setting that causes it to do that, regardles of the fact that eyes wouldn't see anything but still manage to fire anyways?