Burned barrel recycle?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by ricka0, Jul 7, 2005.

  1. ricka0

    ricka0 Well-Known Member

    Nov 8, 2004
    Suppose I manage to get 3,500 firings out of my 30" Lilja Heavy barrel and accuracy starts to drop off a bit. Can a smith whack off a few inches and re-chamber/re-crown it - or would I be better off to start with a fresh barrel? I don't mind loosing 4".
  2. jb1000br

    jb1000br Well-Known Member

    Jul 8, 2003
    I would let your smith decide based on where the new throat would have to be to avoid the firecracking -- determined via borescope of course.

    JB /ubbthreads/images/graemlins/smile.gif

  3. brianwinzor

    brianwinzor Well-Known Member

    Jan 31, 2003
    Big Bore, About 2 years ago, I had my gunsmith set back rechamber 2 barrels, and had mixed success.

    After about 1600 shots as a .224 Clark, the Shilen 25.25 inch barrel had about .250 inches of throat erosion, velocity was down about 100 fps, and accuracy had slipped to around 0.75 moa. After being set back and rechambered to the 22/250 AI, the barrel ended up at about 24.5 inches, and I have since put another 450 shots through this barrel, and it is routinely shooting sub 0.5 moa groups. This rechamber clearly has been a success.

    After about 1500 shots as a .17/222 mag imp, the Shilen 25.25 inch barrel had throat erosion of about .200 inches, and velocity was down 100 fps. Initially accuracy in this rifle was around 0.5 moa, but after lending it to my brother in law for 12 months, it came back badly fouled, and accuracy from then was almost non existant. After being set back and rechambered, the accuracy is still about the same, and has defied all my attempts to get it to shoot. Clearly this rechamber was not a success, but obviously a worn throat was not the only problem in that barrel prior to rechambering. My gunsmith did not have a borescope but said the barrel was far from pristine prior to rechambering.
    Hope the above may be of some help. Brian.