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Marlin rifling

LazyHLazyH Member Posts: 22 ✭✭
edited February 2002 in Ask the Experts
What is the difference between micro grooverifling barrels and those that are not micro groove? which is prefered? and why?
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Comments

  • Der GebirgsjagerDer Gebirgsjager Member Posts: 1,673 ✭✭
    edited November -1
    Regular rifling has (usually) 4 or 6 lands and grooves, whereas micro groove rifling, which is used only by Marlin, has more (12-16) shallower lands and grooves. It has proven itself quite accurate, but no more so than regular rifling. Although they have used micro groove in larger bores, lately Marlin has produced big bore rifles with regular rifling.
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  • steve45steve45 Member Posts: 2,940 ✭✭✭
    edited November -1
    Microgroove rifling does not work well with cast or lead bullets.
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  • luger01luger01 Member Posts: 230 ✭✭✭
    edited November -1
    All of the above is true, but I feel I need to add that the micro-groove rifling in their .22 LR barrels is great. Very accurate and every bit as good as other types of rifling.Seems what works great in a .22 doesn't translate well to larger centerfire calibers. The problem with micro-groove barrels and centerfire calibers with lead bullets is the grooves tend to fill with lead and accuracy drops off fast. Marlin customers found this with the .45/70 1895 rifles and overwhelming asked for Ballard cut rifling. I've heard from folks who have send their 1895s back to Marlin for new barrels and found the cost was quite reasonable for the upgrade.
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