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

Micro Groove v. Ballard rifling in Marlin rifles

Discussion in 'Rifle Country' started by Lone_Gunman, Jun 16, 2007.

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

    Lone_Gunman Member

    Joined:
    Dec 24, 2002
    Messages:
    8,056
    Location:
    United Socialist States of Obama
    What is the disadvantage of micro groove?

    Can you shoot lead bullets through a micro-groove barrel?
     
  2. Onmilo

    Onmilo Member

    Joined:
    Jul 26, 2004
    Messages:
    9,773
    Location:
    Illinois`
    You can shoot lead bullets through Micro Groove barrels, however, performance will not equal what you will experience with a conventional or Ballard type rifled barrel.
    Micro Groove barrels are also much more difficult to completely remove lead fouling from. Jacket material is hard enough in itself to completely remove.

    Micro grooves were designed for and work best with jacketed bullets.
     
  3. dfariswheel

    dfariswheel Member

    Joined:
    Dec 26, 2002
    Messages:
    6,117
    Except in .22LR.

    Marlin has used Micro-Groove rifling in their Model 39-A lever action .22's since the early 1950's.

    They have gone back to standard cut, or "Ballard" rifling in the center fire rifles due to better accuracy from these larger calibers.
     
  4. DWARREN123

    DWARREN123 Member

    Joined:
    May 1, 2006
    Messages:
    1,749
    Location:
    Between TN & KY
    I have heard that Mirco Groove is for jacketed bullets while Ballard is more friendly towards lead except for their rimfires.
    Micro groove has, usually, more shallow rifling and grabs jacketed bullets better while Ballard is deep to grab on to lead bullets better.
     
  5. tube_ee

    tube_ee Member

    Joined:
    Sep 30, 2005
    Messages:
    476
    The leverguns.com

    folks will re-orient your thinking on cast bullets in micro-groove barrels. Check them out. IIRC, the key is to use a larger bullet, as normally-sized slugs don't obdurate well in the multiple, shallower grooves. Thus, accuracy suffers and leading is made much worse.

    My Marlin is Ballard-rifled, and loves lead bullets.

    --Shannon
     
  6. aka108

    aka108 Member

    Joined:
    Aug 26, 2006
    Messages:
    1,988
    Location:
    Tallahassee, FL
    No experience with micro-grove except in 22 rimfire. Been shooting a Marilin 39 I bought in 1955, about 52 yrs. Accuracy is extremly good.
     
Thread Status:
Not open for further replies.

Share This Page