Bergara 6.5 Creedmoor issue.

[No2psi]

I purchased a Bergara B 14 about a year ago.
When purchased I was about .040 to the lands when loaded to magazine length. Now it is about .140 to the lands when loaded to the magazine length. After approximately 500 rounds.
The second thing is that there is a rough spot, you think you are touching the lands, but if you push past it the bullet with move in another .070.
Is any of this normal?

 

[No2psi]

I should mention I am using 36.8 grains if varget. I was at 2590 fps now I'm at 2512 fps.

 

[NoFences]

The rough spot could be carbon build up. Some people think Varget and a few other powders are more prone to carbon build up especially if your brass is not trimmed properly. Several things could contribute to the velocity loss. You might try to clean the throat area with a good carbon cleaner like Bore Tech to see if it resolves the rough spot. Or take it to someone with a bore scope for a definitive answer.

 

[Buzzsaw]

gunsmith for a look down the tube