Quote:
Originally Posted by jaymoore
First guess would be that the chrono pickups were close enough whilst testing the snub that they registered the shockwave of the muzzle blast (1200fps is a little fast for usual speed of sound in air, but close enough) rather than the bullet crossing.
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I ran into that same situation a few months ago, shooting some loads over my chronograph. I simply backed up a few more feet and solved that problem. I was getting velocities close to double what they should have been, if I remember correctly.