Tikka concern?

[Yukon Cornelius]

Good day Roksliders!
I bought a tikka in 300wsm and took it to the range this week to zero my scope. I was using factory ammo and two different types. I had 4 different types but had the same issue with 2 of them that my range session ended.

My bolt was getting stuck. It would not allow me to cycle numerous times.
I was using two different Winchester offerings and had some federal premium and eld-x to try see what shot the best.

The first shot was done and the bolt was stuck. I got it to eject and practice cycling some more ammo without shooting and no issues. Reloaded mag and shot and cycled the bolt quick no issue. Shot again and it was catching again. Changed ammo and had the same issue. I wasn’t able to get bolt to pull back. Went home and used a rubber mallet to tap the bolt and it ejected the spent brass.
Here are some pics and hopefully a video. I know that over pressure can be an issue that causes this, but these are factory rounds and two different boxes of ammo.

Thoughts?

 

[hereinaz]

Pressure problem. Your primer looks flat.

That’s a chamber issue, most likely.

 

[hand skills]

That’s a chamber issue, most likely.

Did ya try degreasing the chamber, @Yukon Cornelius ?

 

[hereinaz]

Did ya try degreasing the chamber, @Yukon Cornelius ?

Oil in the chamber could do that.

 

[HairyScandinavian]

More pics of the primers please. Also degreasing everything on a new rifle is always a good idea.

 

[Yukon Cornelius]

Here is a better pic. What are the odds of two different bullets causing same issue?

 

[Marbles]

If the chamber is sized wrong, then I would expect most factory loads to all cause an over pressure issue.

This sounds like a gun problem, not an ammunition problem given it shows up with two different factory offerings.

If this is a new Tikka, I would consider sending it back to Beretta. If used, the I would clean it well and try again.

If you feel like playing, then check headspace, neck dimensions, and throat dimensions.

You could try degreasing; but if you are sticking the bolt, that sounds like a more serious issue than grease to me and you run the risk of damaging something shooting it again.

Edit: I forgot this is a belted round, not sure how headspace plays into things in this case.

 

[waspocrew]

Edit: I forgot this is a belted round, not sure how headspace plays into things in this case.

Actually, there's no belt on the 300 WSM.

I agree - sounds like something wrong with the chamber itself, rather than the ammo. Could try a different brand besides Winchester though.