Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

What are the effects of out of spec cylinder to barrel gap?

Discussion in 'Handguns: Revolvers' started by JonF, Feb 20, 2009.

Thread Status:
Not open for further replies.
  1. JonF

    JonF Member

    Joined:
    Jun 3, 2008
    Messages:
    101
    Location:
    NJ
    In both the cases of too *large* a gap and too *little* a gap? I can imagine some obvious ones such as rubbing and pressure loss but what else is there?

    Gap too big:
    pressure/velocity/accuracy loss?

    Gap too small:
    rubbing/binding?
     
  2. 9mmepiphany

    9mmepiphany Moderator

    Joined:
    Dec 27, 2002
    Messages:
    18,479
    Location:
    northern california
    it's been awhile since i had one adjusted, but i seem to remember the range was .003-.005

    too small a gap and you risk jamming the cylinder as fouling builds up

    too large a gap and you end up with sideblast as the bullet jumps the gap
     
  3. nicholst55

    nicholst55 Member

    Joined:
    Mar 4, 2007
    Messages:
    698
    Location:
    37*55'N, 127*04'E
    You will also experience reduced velocity with a too-large gap.
     
  4. The Lone Haranguer

    The Lone Haranguer Member

    Joined:
    Jul 30, 2006
    Messages:
    11,717
    Location:
    Johnson City, TN
    Large gap: excessive cylinder blast and particle spitting
    Small gap: may cause cylinder drag/bind on the forcing cone as the revolver heats up
     
Thread Status:
Not open for further replies.

Share This Page