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Messed up bolt face on 338rum rem 700

 
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  #8  
Old 03-07-2013, 06:39 PM
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Re: Messed up bolt face on 338rum rem 700

It looks like blown primers from excessive pressure caused the cutting of the bolt face.

Look at the fired cases and you should see some primer failures. (This can happen if there is
excessive pressure OR if the primer pockets were loose.

It really doesn't hurt anything as long as you find the cause and don,t add to it.

You could face the bolt a little but you probably wouldn,t clean it up without loosing head space and having to shortening the firing pin.

My recommendation would be to solve the problem and continue to shoot it, but don't shoot it until
problem is solved to avoid more damage.

If you find some cases that look like the primer may have a hole between the primer pocket and
the primer take some pictures and post them.

J E CUSTOM
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  #9  
Old 03-07-2013, 06:48 PM
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Re: Messed up bolt face on 338rum rem 700

Quote:
Originally Posted by J E Custom View Post
It looks like blown primers from excessive pressure caused the cutting of the bolt face.

Look at the fired cases and you should see some primer failures. (This can happen if there is
excessive pressure OR if the primer pockets were loose.

It really doesn't hurt anything as long as you find the cause and don,t add to it.

You could face the bolt a little but you probably wouldn,t clean it up without loosing head space and having to shortening the firing pin.

My recommendation would be to solve the problem and continue to shoot it, but don't shoot it until
problem is solved to avoid more damage.

If you find some cases that look like the primer may have a hole between the primer pocket and
the primer take some pictures and post them.

J E CUSTOM

I will check the primers and cases out and see if i see any issue with them. The rounds I was shooting were all new brass and the rounds were loaded very weak. I guess there is a chance that this could of been on the bolt face when I got it and that I just overlooked it and just now noticed it. Will update when I look at cases.
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  #10  
Old 03-07-2013, 10:31 PM
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Re: Messed up bolt face on 338rum rem 700

Well looked at all the cases from the last 50 rounds I have shot through it and they all look normal. I am thinking I missed it when I bought the rifle. Cases go in fine with no lock up or anything and seems to shoot just find so will just continue to monitor it to make sure I am not missing something and it get worse. Thanks for everyone's help.
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  #11  
Old 03-07-2013, 10:58 PM
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Location: Texas
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Re: Messed up bolt face on 338rum rem 700

Looks like gas cut to me. Since all your brass is normal, probably done before you got the rifle. Very few people inspect the bolt face before buying a rifle. It looks to me like if you start loading up hard, primer cups may give way and leak or blow out where the divot is gone. Watch the cases closely as you ratchet up the pressure.

Oh yeah, don't load too light....Never go under a minimum load in the manual you're using. That can get truly dangerous.

If you do have to replace the bolt, it must be headspaced to the receiver. Don't just stick one in and shoot it. Also truly dangerous.

Good luck, let us know how it comes out. Tom
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  #12  
Old 03-07-2013, 11:19 PM
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Re: Messed up bolt face on 338rum rem 700

The issue with a lighter than recipe load is the frictional coefficient of the projectile may not be enough for it to clear the tube. That can be a big issue in larger calibers, don't ask me how I know. Lets just say my hydraulic arbor press was a lifesaver....
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  #13  
Old 03-07-2013, 11:43 PM
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Re: Messed up bolt face on 338rum rem 700

Quote:
Originally Posted by SidecarFlip View Post
The issue with a lighter than recipe load is the frictional coefficient of the projectile may not be enough for it to clear the tube. That can be a big issue in larger calibers, don't ask me how I know. Lets just say my hydraulic arbor press was a lifesaver....
When I say light I mean I was at the min in the book. I hope I never have to experience that. That would ruin a day that's for sure..
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  #14  
Old 03-07-2013, 11:52 PM
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Re: Messed up bolt face on 338rum rem 700

It's worse than just squib loads. Somewhere I read that insufficient powder volume allows excessive air space inside the case, effectively causing some powders to detonate instead of controlled burn. I think it was a discussion on fire-forming. Detonations are extremely dangerous.

Tom
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