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jrchilds: it looks like you have two groups of velocities, one about 635 and one about 710. This is typical of the error induced by subsonic round shock waves tripping the chronograph before the bullet gets there, on occasion, but not every shot.

I have had it happen several times, and the results can be most confusing.

If you back away from the chronograph a bit, you may find the error goes away and you have more consistent velocities.

Depending on how the error was happening, you may also see a significantly higher velocity.

[This message has been edited by KLN (edited 10-27-2001).]
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