re barrel question

Discussion in 'Gunsmithing Forum' started by johan, Dec 28, 2010.

  1. johan

    johan New Member

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    hi i have a model 110 savage that was in 3006 the rifle is getting old and straying so hav bought a new replacement in 2506. it turnes out tht my rifle has one of the verry first bolt heads making the bolt 5mm longer, as a result the original barrel has a recess for the nose of the bolt to extend into. my new barrel hasnt got this recess and i can only get 12mm of thread into the reciever instead of 17mm with the original. i would like a second oppinion on whether it will be safe to use the rifle with the reduced thread as the alternative is having it remachined or buying a new bolt head and firing pin.
     
  2. cpttango30

    cpttango30 New Member

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    NO IT IS NOT. Your head spacing is going to way off. Send the barrel back and get the right one.
     

  3. Dillinger

    Dillinger New Member

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    I am going to second what was Tango's second opinion. You need to get the right barrel, or have the barrel professionally fit.

    JD
     
  4. stalkingbear

    stalkingbear Well-Known Member

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    You can machine the barrel for the recess if you really know what you're doing. I'd suggest you have it installed like Dillinger and Tango says.
     
  5. johan

    johan New Member

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    hi
    i have checked headspace and is correct. the savage rifles use a locking nut to set headspace replacing the machined shoulder that other brands rely on. i would have it remachined but im having difficulty finding someone with a 2506 ream that is near to where i live. the only problem i can see is how the threads will hold out long term
     
  6. stalkingbear

    stalkingbear Well-Known Member

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    It's a simple matter to rent reamers in the USA. I doubt you can rent reamers in NZ however. A finish reamer isn't that much when you consider the total and you can sell the reamer when you're done with it.
     
  7. Dillinger

    Dillinger New Member

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    johan - What are the import/export laws concerning sending your barrel to the US to have just the barrel worked on and then receiving it back??

    Just an option. Here in the US, this is a quick fix issue, but I have no idea about how things work there.

    JD
     
  8. johan

    johan New Member

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    renting reamers would be a thing of dreames, over here finding a gunsmith is hard enough we currently have none that i can find in our biggest city other than the odd guy who fits suppressors in his garden shed. sending the barrel anywhere is a no go since 9/11 we cannot import or export anything firearm related without a dealer licence and allot of money. will a finishing ream work 5mm out. where would you be able to buy a second hand one from?
     
  9. stalkingbear

    stalkingbear Well-Known Member

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    Yes a finishing reamer would ream 5mm easily. It won't recess your barrel for your bolt face however.
     
  10. johan

    johan New Member

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    ahk yup of course. looking at the price of new reamers it would stil be cheeper for me to get a new bolt head which would resolve the problem aswell.
    so in everyones oppinion 12mm of thread in the reciever is inadiquate? i have a 308 barrel off a remington semi automatic which only has 10mm of thread on a smaller shank so would handle even less pressure. if it is not neccessary to remachine or replace the bolt head i would rather not.
     
  11. cpttango30

    cpttango30 New Member

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    OK I am not tracking here. If the barrel needs recesses milled into it for the barrel to fit properly and they are not there then the barrel can't fit properly and your headspace would be off.

    How did you check headspace?
     
  12. johan

    johan New Member

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    Attached Files:

  13. johan

    johan New Member

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    Attached Files:

  14. Catfish

    Catfish Member

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    If I am following you correctly you need a new bolt head to get more threads. Again, easy to get here, but you are over there. :rolleyes:
     
  15. cpttango30

    cpttango30 New Member

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    OK the biggest problem I see in the pictures above is that the case head is not going to have any support by the barrel or action. That is a major concern for me. That will cause you to lose part of your face at some point in time.
     
  16. stalkingbear

    stalkingbear Well-Known Member

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    If he's using a NEW style barrel with a NEW style bolt head he'll be ok. He can't use a new style barrel with the old style bolt head. If both are new style or both are old style they're ok as long as they match.
     
  17. greydog

    greydog Member

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    Johan,
    As you have surmised, everything about the conversion is just fine (headspace, cartridge head support, etc.) except for the reduced thread engagement. If you truly have 12 MM of thread, you should be OK. This is, providing the threads in the receiver and on the barrel are complete and a decent fit. This is not a common occurence on the Savage.
    You could replace the bolt head but, be aware, you will also have to replace the firing pin which will then be too long.
    So, in order of preference, you may:
    1. Machine the recess and deepen the chamber.
    2. Replace the bolt head and firing pin
    3. Use the barrel as is and worry about it every time you shoot.
    There you have it. While I think it is probably safe enough, I would not use it the way it is and would certainly not send it out of the shop that way. GD
     
    SWSinTN likes this.
  18. powg

    powg New Member

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    gun smithing

    with your knowledge and the needs you have addressed ,you yourself could take advantage of the situation ... start your own shop.,as you said cant find a gunsmith in your area ...that means no competition...you could make $$$$$ ...not very many people work doing what they love.
     
  19. johan

    johan New Member

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    hi been real busy hense no reply in whyle.
    the threads fit perfectly smooth with next to no movement but not the sort caused when binding. also the 12mm is a safe measurement there is more but it is tapering off.
    i have fired it and it all operated fine no evidense of a problem when inspecting the case.
    in reply to what cpttango3 said the face recieves no reinforcing or encasing from the barrel in the original design either. the recess the bolt protrudes into is far bigger than the bolt head. all force is returned to the locking lugs and the combination of the locking lugs and baffle for locating the face.
    looking at brownells website it worked out prety cheep to purchase the new head and firing pin (for both length but also they have redused the pin diameter). so i will have to see if customes finds it and if not see how much they need modifying to fit.

    id love to start up as a gunsmith but just become qualified as civil engineer. and not had enough experience as yet in metal work. im starting to collect machinery so i mite be able to retire to one