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Thread: Measuring Distance to Lands - Interpreting Results

  1. #1
    Member Valley Trash's Avatar
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    Default Measuring Distance to Lands - Interpreting Results

    Iíve tried measuring the distance to the lands by the method described in the Nosler reloading manual, the speer reloading manual, and several methods found on the internet. They are all basically variations of the same thing. I understand the methods; itís reading the results that Iím not confident with. Iíve put in no less than 10 hours trying to figure it out. I may have the answer, just not confident in it. Hereís the data:

    Cartridge: .280-Rem.
    Rifle: T/C Encore (single shot)
    Max C.O.A.L: 3.3300Ē
    Bullet: 160-Gr Speer Grand Slam

    A dummy at 3.3330Ē can slide in all the way with no resistance; any longer and I can feel when it jams. However, if I soot a bullet at this length, it has marks from the lands around the entire bullet. A round at 3.2900Ē has no land marks. Anything between 3.2900Ē and 3.3330Ē has marks, but increasingly less. At 3.3000Ē for example, what appears to be marks from the lands are only on one side, not all the way around the bullet. Is that normal? I would assume if the bullet is touching the lands, it would show around the entire bullet.

    Anyone else have this trouble when you first started out?

  2. #2
    Member Valley Trash's Avatar
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    Default

    Oops - meant for this to be in the reloading forum, not shooting. Murphy can you please move!

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