Give this a try....... Scuff your bullet with steel wool or a fiber pad. Just enough to take the shine off. When the bullet touches the lands it will have small bright spots made by the bullet contacting the lands. This will tell you if you're using enough pressure on the rod. If you find more pressure is required you can prevent the bullet from sticking in the lands by applying a little case lube at the part of the bullet that will be touching the lands. ...... Quite often a bullet that doesn't stick in the lands will result in the bullet being pulled out of the case slightly which yields erratic measurements........ Oh, and it helps to hold your mouth just right :)....... BTW the marks you find on the bullet should be almost square on a newer bbl. The marks will be more oval in shape if the throat is beginning to wear.
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