by jmac » Wed Mar 08, 2017 10:58 am
I have a similar problem with one of my abt guns, inconsistent shooting, I talked with Roger Hilden at Crow River, he is the expert of ABTs. He said to press that part out of the barrel and inspect, and then he usually reams out the end of barrel right where the pellet rests, because sometimes bumps and deformities form there from heavy use. I did that, and tested with new pellets and still has inconsistent shooting, have to take it apart again and figure out why.
Might want to talk with Roger, and maybe try new pellets.