Tensioned barrels?

Discussion in 'Gun Project Questions & Gunsmithing' started by boltfluter, Jan 9, 2019.

  1. boltfluter

    boltfluter Gold $$ Contributor

    Joined:
    Jan 3, 2012
    Messages:
    2,668
    Just wondering if anyone has any experience messing with the tensioned barrel set up? Seems like an interesting concept. Thoughts? :D:D

    Thanks, Paul
     
  2. DaveTooley

    DaveTooley Silver $$ Contributor

    Joined:
    Sep 29, 2008
    Messages:
    607
    Yep many moons ago in 1k BR rifles.
    Tension as well as compression. Even tension with a barrel block (s). That didn't work out so well.
    They work but have a personality all their own. That personality can change every time there's a barrel mod.
     
    Last edited: Jan 9, 2019
  3. ridgeway

    ridgeway Silver $$ Contributor

    Joined:
    Aug 9, 2007
    Messages:
    1,843
    Some vintage 40x stocks had two set screws at the forend to put pressure on barrel. The 40x I had...I could never get repeatable results with them touching barrel. Do a tuner.
     
  4. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

    Joined:
    May 8, 2014
    Messages:
    11,431
    I have done it. Aluminum, carbon fiber, and titanium. I think its ok on a rimfire barrel but not a centerfire. I did it for weight and they looked cool but wow did they shoot bad.
     
    boltfluter likes this.
  5. Ggmac

    Ggmac Gold $$ Contributor

    Joined:
    Aug 11, 2012
    Messages:
    3,123
    Tried it , it just added one more variable . Tried sporter barrels that I kept the muzzle at 1.25 " to thread for the outer 3 piece tube . In the middle of the outer tube , well it was basically a turnbuckle . Left threads and right threads to adjust pressure .
    At first I thought it was an improvement , but realized after much fussing ( aprx 130 rds ) not a viable design or idea . I was shooting a modified 6.5 Remington Mag at Williamsport , long long ago .
    Hope this makes sense , no COFFEE yet
     
    boltfluter and DaveTooley like this.
  6. bcarico

    bcarico Silver $$ Contributor

    Joined:
    Nov 1, 2011
    Messages:
    167
    World records have been set using them.
     
  7. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

    Joined:
    May 8, 2014
    Messages:
    11,431
    do you have an example of one set with one? ive never seen anybody using one in any discipline besides the STC in rimfire.
     
  8. DaveTooley

    DaveTooley Silver $$ Contributor

    Joined:
    Sep 29, 2008
    Messages:
    607
    Joel Pendergraft and Charles Bailey absolutely wore us out with there's. Joel's worked for one barrel then he never could duplicate the performance. Charles made several barrels work. I built a 30 BR rail gun for a guy. I don't think it shoot that well. All the tools you know about making a rifle shoot are null and void. It's about engineering and a bit of luck.
    Sorry no pics.
     
    dmoran and bcarico like this.
  9. bcarico

    bcarico Silver $$ Contributor

    Joined:
    Nov 1, 2011
    Messages:
    167
    I have some pictures of the guns Tooley mentioned I’ll dig them out tomorrow. Joel’s gun held the HG 1000yard record for quite some time.
     
    boltfluter and Dusty Stevens like this.
  10. cem

    cem

    Joined:
    Jul 19, 2012
    Messages:
    18
    Dan Wesson revolvers with their interchangeable barrel system had a variety of tensioned barrels. Dan Wesson revolvers were also the most successful brand at handgun metallic silhouette to longer ranges with powerful cartridges. Anecdotal only. May not have been an improvement but a suggestion of did not hurt.
     
  11. bcarico

    bcarico Silver $$ Contributor

    Joined:
    Nov 1, 2011
    Messages:
    167
    I took these pictures in 2008 at Hawks Ridge in NC. The first photo is a picture of Joels gun that held the HG 1000yd record. The rest he used are on the table in front of the rifle. The second picture is the gun being shot. (sorry this photo didn't turn out well)
     

    Attached Files:

    • 056.JPG
      056.JPG
      File size:
      2.4 MB
      Views:
      160
    • 048.JPG
      048.JPG
      File size:
      1.3 MB
      Views:
      139
    Evlshnngns and Dusty Stevens like this.
  12. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

    Joined:
    May 8, 2014
    Messages:
    11,431
    Man that was an exercise in machining for sure. The butt pad is a nice touch.
     
    Ramblerman likes this.
  13. alinwa

    alinwa

    Joined:
    Apr 3, 2013
    Messages:
    1,112
    Craig Kensler, Larry White, Charles Ellertson, Robbie Carnell, Jeff Rogers ......... Belleville washers, jacking screws, zerk stretchers...... useta' be quite a thing.


    fat ones
    carnellrailgun1.jpg

    skinny ones

    jerryK stretcher.JPG

    I'm betting Boyd's got a hunnerd pix in his files if you get him interested.....
     
    bcarico likes this.
  14. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

    Joined:
    May 8, 2014
    Messages:
    11,431
    That one of rob’s there was a water jacket if i remember right. A few did it around the same time. It had an ammo can full of water and a little bilge pump
     
  15. savagedasher

    savagedasher

    Joined:
    Jul 25, 2012
    Messages:
    6,858
    It should be a simple process
    Any good Cylinder repair shop can make it and you could increase the tension with hydraulic pressure
     
  16. JohnKielly

    JohnKielly Australia, not Austria Silver $$ Contributor

    Joined:
    Oct 25, 2007
    Messages:
    941
    Saw one set up for Palma style shooting a few decades back. In that case, he was searching for a method to get more barrel length (and velocity) without upping weight. It turned out it was no better or worse than he could achieve conventionally.
     
    savagedasher likes this.
  17. savagedasher

    savagedasher

    Joined:
    Jul 25, 2012
    Messages:
    6,858
    A friend who rebuild hydraulic
    Cylinder says it wouldn’t be much problem to build
    And he said 1/2 ton of pressure
    And oil filled
     
    boltfluter likes this.

Share This Page