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lands

  1. Wheres-Waldo

    Gas ports lands or grooves?

    Is there any difference in whether a port should be located in the land or groove of a barrels rifling? Furthermore, I've been advised that a port that has been located in a portion of rifling that bisects a land AND a groove has no effect on accuracy... True/False? I Google'd it up and there...
  2. L

    Measuring for Lands

    I am trying to measure for the lands of my rifle. When I insert a dummy round , I get "what looks to be 4 or 5 dirt marks around the bullet, is this the lands contacting the round? And if I want to be .010 from the lands do I use this mark as a reference. Thanks, Lance
  3. Mag 300

    anyone shooting 338 lapua touching or in the lands

    I just got a 338 lapua and its shooting a 3" group at 600 yards. when I got it used factory loads to zero it and sight her in now at home I took the COAL measuements and there shorter and the factor loads I was using bu .020 so the rifle was shooting lights out with the bullet jammed into the...
  4. C

    Into the Lands?

    Confusion? 0.20 into the lands. Does this means the ogive of the bullet is pushed 0.20 in to and cutting into the barrel rifling? I load off the ogive of the bullet,but its always been 0.20,0.10,0.05 before the ogive or is touching the lands, but never push into and I asume cutting into the...
  5. M

    Measuring Ogive to Lands

    I am trying to use the Stoney point tool to measure when the bullet ogive touches the lands on my factory .308 rifle. I am following the suggestion in the instructions and using a .25" wooden dowel down the muzzle end so I can move the bullet back and forth with the plastic rod on the tool and...
  6. T

    How much of the lands

    Hello. I am reloading 308 and I want to know how far from lands should I give bullet. (distance between bullet and lands)
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