Chronograph Errors

May 13, 2017
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#1
I have a shooting Chrony that worked great till my last range session.
It gives me constant ERR1 messages and some erratic readings when it does manage to read my shoots.
I have it set up 10ft from the muzzle on a good tripod using the sky screens in full sun light with clear sunny skies.
Usually when I would get this error I would change the battery and it would go away but now nothing I do helps.
Any suggestions would be appreciated.
 

Rthur

Philomath
Apr 16, 2010
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Divernon, Illinios
#3
Chronys aren't known for their great consistency or accuracy.
Find a bud with a better rig.
These would include Labradar and magneto speed or for old school an Oehler.

R
 

Onyx Z

New Hide Member
Sep 27, 2018
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#4
Read the instructions that came with it. I believe ERR1 is the first sensor didn't detect the bullet. You might make sure the sensors are aligned with the bullet path.
 
Nov 30, 2017
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#5
When I was using a Caldwell chrono, I found it worked best if I could set the entire unit in the shade with blue sky directly overhead. I never used the screens, but my firing lines afforded me the shade/sky scenario.

As Onyx said, ERR 1 should be front sensor detection failure... you probably already know this, but make sure the unit is aligned with your bullet path vertically as well as horizontally.

A cheap chrono is vastly better than no chrono, but if you're serious about shooting, invest in a LabRadar or Magnetospeed when you can.

Good luck.
 
May 13, 2017
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#6
Was it cloudy or too sunny?

Might be time for a new Labradar.
It was sunny with a clear sky around 1100hrs with the sunny in the southern sky. Thinking the sun angle was hitting the photo cells. This thing had worked almost flawlessly till I used it with a 300 Win if that has anything to do with it I don't know. It was set up 10 ft away per operating instructions.
I plan on getting a new Magneto Speed for Xmas but need to get this working now for some load development.
 

Rthur

Philomath
Apr 16, 2010
6,458
2,898
113
50
Divernon, Illinios
#7
It was sunny with a clear sky around 1100hrs with the sunny in the southern sky. Thinking the sun angle was hitting the photo cells. This thing had worked almost flawlessly till I used it with a 300 Win if that has anything to do with it I don't know. It was set up 10 ft away per operating instructions.
I plan on getting a new Magneto Speed for Xmas but need to get this working now for some load development.
Might have been to close to the 300 mag and getting bullets plus pressure waves.
Try at 12-15 feet and see if it helps.
R
 
May 13, 2017
20
1
3
#8
Might have been to close to the 300 mag and getting bullets plus pressure waves.
Try at 12-15 feet and see if it helps.
R
Thanks I'll try that . I was also thinking about putting side shields on the defuser wires to cut down on any side light from shinning on the photo cells.