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pepper123

Mate I gave you my best advise based on being a Professional Engineer (Toolmaker) with many associated engineering qualifications to my name including a very good knowledge and...

pepper123

It will be interesting to see if the ammo supplier ( not the retailer) steps up and owns their issue and puts thing right to your satisfaction.

It is a good idea to have your rifle...

Nor should you be happy.

But on a brighter note , no one got injured. :thumbsup:

Let us know how you get on.

Cheers
Pete

What VC said :thumbsup:

Cheers
Pete

Do you have a photo of the Winchester head stamps?

Cheers
Pete

pepper123

The dark ring you see around your firing pin hole has been etched into the bolt face by high pressure gasses leaking from the primers of the ammo you have shown us.
This is a direct...

pepper123

Mate there's excess pressure signs in this brass too.

Especially the bottom right hand case and 2nd down on the right have leaking primers and extractor marks in the head stamp.
...

pepper123

We need to see the other end mate. :)

Cheers
Pete

A good gunsmith can advise you if there is any damage or if the head space is within specification and what can be done to fix anything they find.

Cheers
Pete

pepper123

Can you post some close up photos of the empty 150gr loads just to be sure there are no early signs of excess pressure with this ammo too.

Cheers
Pete

@pepper

This may help explain head space.

https://en.m.wikipedia.org/wiki/Headspace_(firearms)

Cheers
Pete

pepper123

Most of those spent cases show pressure signs, especially extractor marks on the heads of the cases.

Take the remaining back to the supplier and ask Hornady for a please explain.
...

Id be taking it back to whom ever I bought if from in that case as they are not safe to continue shooting in your Rifle.

On a warmer day these 168gr rounds may fail in a catastrophic way causing...

pepper123

What you have described and shown in your photo is excessive pressure warning signs.

You'd do well to heed these warnings before it ends in tears

The signs are the evidence of gas...