I thought this was interesting, New BMR

[idahoron]

I ran a couple bullets into my chamber then took them out to see if there was any damage when they were loading. I so no signs that bullets were being damaged but I did see marks from the rifling's. Since I have never had a bolt action 22 is this normal that the chamber has a very short throat or none at all?

 

[idahoron]

These are the bullets

 

[1911JMB]

Match 22 chambers tend to drive the bullet into the lands

 

[AZ Dan]

OK. That's normal.

 

[iceng]

I made a post about a Bergara chamber and how much it jams. It's normal, and often desired.

 

[Badshot308]

Here's a good video on the subject: