marine6680
New member
New American Rimfire in .17hmr is keyholing at 50yds.
We fired about 50rds. The keyholing wasn't consistent. When it was shooting well, groups under 1/2 inch, but it would open up groups and keyhole randomly.
It has 100rds through it total. I don't see anything abnormal on he bore.
Today was CCI and Federal 17gr vmax.
We fired about 50rds. The keyholing wasn't consistent. When it was shooting well, groups under 1/2 inch, but it would open up groups and keyhole randomly.
It has 100rds through it total. I don't see anything abnormal on he bore.
Today was CCI and Federal 17gr vmax.