No. of Lands and Polygonal barrels?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Kobra, Sep 18, 2002.

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  1. Kobra

    Kobra Active Member

    Mar 4, 2002
    In my continuing long range education I stumbled onto Pac-Nor barrels website. First I noted the vast number of wildcats and secondly I note the vast array of twist rates/land combinations.

    How do you select a non-norm land number? In some calibers, with available twist and land combos you would be looking at 5 to +15 choices. Is it all just trial and error or is there some formula? I realize as bullet weight/length goes up you generally want twist rate to speed up but how do you determine no. of lands? Preference?

    Then there was even polygonal choices. From what I have read, polygonals namely Mike Rock barrels, are unbelievable shooters but I don't notice anyone on here really speaking of them.

    Thanks for the comments.
  2. texas

    texas Well-Known Member

    Sep 26, 2001
    Dave King has a Tac-Ord built 338 Rum with a Pac Nor poly barrel. Look in the for sale section to get an idea as to how it shoots. I'm sold on it!