OK, got to the range with the new 22 (6" barrel, Monson). Cleaned it first. Barrel looked good.
Shot a box of 50 from a bench rest.
First three shots grouped in a 1 inch circle.
Then it got crazy (see attachment)
Hits spread over 18", holes were odd shaped, as if the bullet was tumbling. Occasional hits on center, nice round holes, then all over again.
Looked down the barrel, and there was a little streak of powder at the bottom right at the chamber end. Couldn't tell how thick it was.
Used Remington round nose high-velocity.
I'll clean it again and try some standard velocity ammo, but is this a sign of wrong ammo choice or bad barrel or what? Trying to figure out if I should work the problem (new barrel?) or try to get refund from seller....
Thanks for your help!!
-Steve