Thread: Chronograph thoughts

Originally Posted by Cigar

I have an old Prochrono (1990's era) and a Magnetospeed, the few shots I have fired using both were very close in velocity except one, which I'm pretty sure was due to the muzzle blast turning the Prochrono on a slight angle. I have had the odd really weird reading from the Prochrono, usually in bright sunshine coming from an angle.

Yep, what Woody said is what I think caused my lower reading. The bullet has to travel a tiny bit further on an angle, so velocity will show as slower.