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Model 70 Extraction Problems

 
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  #1  
Old 11-12-2012, 12:20 AM
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Model 70 Extraction Problems

I picked up a used Model 70 SS with BOSS in .300 Weatherby. It looks to be in great shape. it's VERY difficult to get spent (factory) shells out of the chamber. Unfired shells load and unload easily. I was using factory Weatherby 180 grain cartridges that fed in and out of the chamber without difficulty. Once fired we had to pound on the bolt handle to get the spent shell casing out.

What do I do now?
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Old 11-12-2012, 06:48 AM
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Re: Model 70 Extraction Problems

It would help to know what action you have?
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Old 11-12-2012, 11:04 AM
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Re: Model 70 Extraction Problems

Quote:
Originally Posted by ICANHITHIMMAN View Post
It would help to know what action you have?

It's a Model 70 New Haven Conneticut, SS bolt-action that SEEMS to function perfectly until I try to extract fired cases.
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Old 11-12-2012, 03:17 PM
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Re: Model 70 Extraction Problems

Quote:
Originally Posted by Buano View Post
It's a Model 70 New Haven Conneticut, SS bolt-action that SEEMS to function perfectly until I try to extract fired cases.
Ya that's not what I meant, there are two different Winchester actions. One based of the Mauser with a big external claw extractor, this includes pre 64 model, classic models and the new models. The other actions are called push feed actions and they do not have the external claw extractor, Winchester did this to cut cost.

Which do you have?
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  #5  
Old 11-12-2012, 11:02 PM
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Re: Model 70 Extraction Problems

I have what I believe to be a "classic" withe the large claw extractor. I've attached pictures that should make it clear.
Attached Thumbnails - Click to View Larger
Model 70 Extraction Problems-dsc_0027.jpg   Model 70 Extraction Problems-dsc_0028.jpg  

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  #6  
Old 11-13-2012, 09:50 AM
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Re: Model 70 Extraction Problems

Yep that's a Classic nice rifles, most likely you have poor extractor tension. But there may be other issues. Short of shipping it off to the doctor, you can do a few checks by your self then if you got it from a shop take it back and say fix it.

Check the chamber for burrs, these will some times show up on your fired brass. You can also use a Q tip to see if anything may be in the chamber making it hang up on you. Make sure the chamber and bolt are clean and there is nothing in the recess on the barrel that the claw fits into.

If you think you need to ship it out call Kevin Cram at montoure county rifles he did my M70 for me.
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  #7  
Old 11-13-2012, 10:24 AM
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Re: Model 70 Extraction Problems

I have checked the extracted cases. The only "marks" are extremely light and right above the base of the cartridge. These marks look like the case was expanded against the sides of the chamber & pulled out HARD, but there are no deep marks, gouges or indentations only rub marks. It doesn't seem like there is a rough chamber, it acts like I'm WAY over-pressure with factory ammunition. Being WAY over-pressure with factory ammunition is what concerns me.


My thought at this stage is to polish the chamber with rubbing compound, a swab, and a drill on low speed. If that doesn't work it looks like time for professional help.
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