I had purchased this barrel and took it out shooting. The first groups I had fired through it were the three around the bullseye and then I got excited and started rushing my shots. This barrel is the extended threaded model that is about 5.3" long with the 1:20 twist rate. The three middle shots is more indicative to the kind of groups it can shoot. I was using my Pro Core with a Leupold Deltapoint on it. This was about 40' away. Using PMC 9mm 115gr ball ammo. I also have the Apex FSS trigger and competition spring kit.
