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More 338LM Issues.

 
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  #15  
Old 03-28-2012, 07:13 PM
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Re: More 338LM Issues.

Quote:
Originally Posted by Leyerly338 View Post
An FL re-sized case @ 2.714" has the same issue.
How about virgin factory brass and/or factory loaded ammo?

Also, have you measured your case headspace length from the datum line to the case head with something like a Hornady headspace gauge set for your calipers? I'd be curious to know the distance before and after sizing to know whether you're really bumping the shoulder.

Also, you might coat one of your sticky rounds with dykem layout blue, or sharpie and open/close the bolt a time or two to see if you can determine where it's rubbing.

-- richard
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  #16  
Old 03-28-2012, 07:15 PM
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Re: More 338LM Issues.

You haven't mentioned the brand of brass.

I posted a thread about Hornady 338LM cases being too long for the tight Savage chamber.

If you are using Hornady cases, see if they're not over length... the ones which stuck in my 110BA's chamber were 2.730... about 15 or so thousandths too long for the Savage's chamber.

I have had no issues with Lapua cases at all... and they're at 2.715" virgin case length, and also length after firing. Tight chambers on these rifles...

Dan
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  #17  
Old 03-28-2012, 07:57 PM
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Re: More 338LM Issues.

All of My brass is HSM (Bertram), 20 from a box of their loaded ammo and 50 from bulk unfired Brass. I don't have a Headspace gauge. I did coat the shoulder of a sized and unsized brass both and there are marks just before the shoulders roughly .030" past the shoulder towards the neck. Forgot to mention the loaded ammo I got from HSM was tight to chamber also.
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  #18  
Old 03-28-2012, 08:01 PM
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Re: More 338LM Issues.

The modified case from My Hornady OAL Gauge is also tight to chamber.
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  #19  
Old 03-28-2012, 10:16 PM
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Re: More 338LM Issues.

If the contact is between the shoulder and neck as you stated, it sounds like the headspace is bare minimum spec or perhaps less. Or, you aren't actually bumping the shoulder. But, you did say it was the same with the new HSM loaded ammo.

If you end up with a dirty chamber in the field, you're going to be frustrated.

I would measure with the Hornady headspace gauge adapters and bump the shoulders another .002" and see if that makes a difference.

-- richard
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  #20  
Old 03-28-2012, 10:21 PM
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Re: More 338LM Issues.

Quote:
Originally Posted by rscott5028 View Post
If the contact is between the shoulder and neck as you stated, it sounds like the headspace is bare minimum spec or perhaps less. Or, you aren't actually bumping the shoulder. But, you did say it was the same with the new HSM loaded ammo.

If you end up with a dirty chamber in the field, you're going to be frustrated.

I would measure with the Hornady headspace gauge adapters and bump the shoulders another .002" and see if that makes a difference.

-- richard
All of which contradicts my first post which was based on your first post that you seem to have contradicted. ???

All the more reason to get the HS gauge or some sort of headspace or chamber gauge and measure to see if your die is set up and working correctly and consistently.

-- richard
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  #21  
Old 03-29-2012, 05:00 AM
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Re: More 338LM Issues.

what is the length of your fired cases?
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