Results 1 to 5 of 5

Thread: Tight Spots in the Barrel

  1. #1
    Hsing-ee's Avatar
    Hsing-ee is offline may also be employed in conjunction with a drawn reciprocation dingle arm, to reduce sinusoidal repleneration
    Join Date
    Dec 2001
    Location
    Glasgow
    Posts
    18,664

    Tight Spots in the Barrel

    I’ve cleaned the barrel of my BSA Mercury with a bronze brush and a pull-through with oil on it, the rifle suffered the ‘cheese buffer phenomenon’ and there was plenty of this material stuck to the compression cylinder and probably therefore it got in the barrel.

    When recrowning the muzzle I did the pushing a pellet through technique. As well as the lip at the muzzle I noticed a few tight spots along the bore, though none of them were VERY tight, just points of resistance. These got less after the above mentioned thorough cleaning, but did not disappear altogether.

    I don’t want to ruin the bore so I’m leaving at that. Presumably the lead from the pellets will smooth things out when it’s had a tin through it. Do people burnish they’re bored to get rid of all tight spots? Is it worth it? What are the risks?

  2. #2
    Join Date
    Feb 2006
    Location
    Farnborough
    Posts
    4,428
    If it was only slightly more resistance you felt i would leave it as it. Get it back together and see if accuracy is ok. If it is leave it well alone.
    WANTED: Next weeks winning lottery numbers :-)

  3. #3
    Join Date
    Apr 2002
    Location
    Near Wimbledon, SW London, or Lusaka, Zambia
    Posts
    26,987
    I use JB bore polishing compound (no connection) to take out tight spots.. doesn't take much.

    But only if the gun is innacurate, and especially when it feels too loose at the muzzle due to on earlier tight spot.
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.

  4. #4
    Hsing-ee's Avatar
    Hsing-ee is offline may also be employed in conjunction with a drawn reciprocation dingle arm, to reduce sinusoidal repleneration
    Join Date
    Dec 2001
    Location
    Glasgow
    Posts
    18,664
    So unless there’s a problem, leave well alone. Kind of wish I’d never heard of the concept of tight spots but if it ain’t broke don’t fix it.

    Mercury does not seem to have a choke but I’ve only tried one type of pellet and I expect they behave differently with a blast of air behind them.

  5. #5
    Join Date
    Apr 2012
    Location
    Retford, Notts
    Posts
    37,287
    Yep; the less intervention the better, in my humble view. If accuracy is okay now, leave as is.
    THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013.
    NEXT EVENT :- May 17/18, 2025.........BOING!!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •