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Thread: source for tungsten rod/butt stock weights

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  1. #1
    Join Date
    Dec 2017
    Posts
    585

    source for tungsten rod/butt stock weights

    gentlemen,
    i am finishing up a rifle for extreme long range.
    it is a 40 lb bench rest class.
    i am close to 18 lbs with a 8 lb bbl and a long range stock( LRB ).
    i would like to add some weight. to better balance and cause it
    is a 338 edge with 275/300 gr bullets.
    current center of gravity is 3.5" in front of the recoil face/10.5 from the front end of the stock.
    long range guys where do you like your center of gravity ?

    in the past i have cast 1" dia lead in 1 lb slugs. can still do that but thought
    tungsten might be neater, maybe lower in the stock.
    Last edited by retired; 06-14-2019 at 02:12 PM.

  2. #2
    Join Date
    Jul 2016
    Location
    Arizona
    Posts
    4
    In some movie theater projector light bulbs there is a chunk of tungsten. They burn out regularly and are replaced.
    M

  3. #3
    Join Date
    Feb 2003
    Location
    Melbourne, AUSTRALIA
    Posts
    94
    Quote Originally Posted by retired View Post
    gentlemen,
    i am finishing up a rifle for extreme long range.
    it is a 40 lb bench rest class.
    i am close to 18 lbs with a 8 lb bbl and a long range stock( LRB ).
    i would like to add some weight. to better balance and cause it
    is a 338 edge with 275/300 gr bullets.
    current center of gravity is 3.5" in front of the recoil face/10.5 from the front end of the stock.
    long range guys where do you like your center of gravity ?

    in the past i have cast 1" dia lead in 1 lb slugs. can still do that but thought
    tungsten might be neater, maybe lower in the stock.

    source for tungsten rod ?
    eBay. Do a search for the size you are looking for

  4. #4
    Join Date
    Dec 2017
    Posts
    585
    i do not do biz with ebay as they are anti-gun.
    amazon showed a bunch, but it is not as dense as i was led to believe.
    i think i will stick with lead.

    Quote Originally Posted by Michael Huebner View Post
    eBay. Do a search for the size you are looking for

  5. #5
    Join Date
    Apr 2017
    Location
    Ames, Iowa
    Posts
    508
    Quote Originally Posted by retired View Post
    i do not do biz with ebay as they are anti-gun.
    amazon showed a bunch, but it is not as dense as i was led to believe.
    i think i will stick with lead.
    They allow all sorts of gun related stuff to be sold there.

  6. #6
    Join Date
    Dec 2017
    Posts
    585
    go read their rules
    go read paypal rules
    NO GUNS.
    Quote Originally Posted by antelopedundee View Post
    They allow all sorts of gun related stuff to be sold there.

  7. #7
    Join Date
    Dec 2007
    Location
    Brisbane, Australia
    Posts
    2,376
    With all the insecurity in the world markets these days, why not go for a chunk of gold, the upside being who would look for it hidden in a rifle?

  8. #8
    Join Date
    Apr 2017
    Location
    Ames, Iowa
    Posts
    508
    Quote Originally Posted by retired View Post
    go read their rules
    go read paypal rules
    NO GUNS.
    I wouldn't buy a gun there anyway.

  9. #9
    Join Date
    Apr 2017
    Location
    DFW, TX
    Posts
    168
    Quote Originally Posted by retired View Post
    ...source for tungsten rod ?
    https://store.mttm.com/crankshaft-weight?orderby=10

  10. #10
    Join Date
    Feb 2006
    Location
    California...unfortunately
    Posts
    716
    McMaster Carr has tungsten.

  11. #11
    Join Date
    Apr 2006
    Location
    Kentucky-Home of the Kentucky Wildcats
    Posts
    2,310
    A quick Google search yielded this

    Tungsten has a density of 0.70 lbs/in3, which means that a cube of tungsten one inch on all sides would weigh 0.70 lbs 1.74 times more than the same sized cube of lead. ... Using a denser weight, like tungsten, allows you to more precisely place the weight.

    It's not cheap! Ebay has been the best resource for me. No, I'm not an eBay fan either but when it's half the price...I have to bite the bullet at times.

  12. #12
    Join Date
    Oct 2007
    Location
    Northwest Ohio
    Posts
    543
    I found a product on Amazon that is a bucking bar for rivets. It was just the right size and very easy to machine. About $90 for a 3" piece and weighed I believe 1.8lbs?
    Do a search for "tungsten bucking bar" and it is down the page a little.
    Hope this helps
    Mike
    Last edited by savet06; 06-19-2019 at 09:44 PM.

  13. #13
    Join Date
    Dec 2017
    Posts
    585
    i'll have to go back an look, all i saw was lighter...maybe an alloy ?

  14. #14
    Join Date
    Dec 2017
    Posts
    585
    this is a copper tungsten alloy...about the same or less dense than lead.

    1" dia-1" long, 1/2 lb

    Quote Originally Posted by Kyle Schultz View Post

  15. #15
    Join Date
    Apr 2017
    Location
    DFW, TX
    Posts
    168

    Sir... You are Wrong

    Quote Originally Posted by retired View Post
    this is a copper tungsten alloy...about the same or less dense than lead.

    1" dia-1" long, 1/2 lb
    The density of lead is 11.36 gr/cm3.

    A 0.5" x 1" carbide weight from the source I gave is reported to weigh 0.13 lb. That's 2.08 oz. I weighed one of the weights I have and got 57 gr which converts to 2.01 oz. Pretty damn close. A 0.5"x1" cylinder is 0.19635 cu in which converts to 3.22 cm3.

    57 gr divided by 3.22 cm3 yields a density of 17.72 gr/cm3. Compared to pure lead, the tungsten weights referenced above are 56% denser.

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