Here are some of the tricks I use
to get the Starrfire bolt to work right

1st try to put the bolt only in the gun. If it is hard to
get it to go in then.....

.....get your self some fine sandpaper.........

........wrap it around the bolt then just turn the bolt.
Sand a little at a time then check it in the gun again till it fits .

Once you got it fitting right in the gun take the bolt and
check it in your barrel. you only need to check the front of the bolt. Just
sand it down like before till it fits.This is the thing that can cause the
most problems. Problems like gun jamming, end of the barrel getting hacked
up, low velocity (by stopping the hammer from going all the way forward)

Once you have sanded the tip of the bolt down take a ball
and push it in hard than turn it to see if you have made it sharp or have
anything that will cut or break the ball.

I push hard enough that the ball has an indent from the
bolt.