Chrono distance

[Red Ryder]

How far away should the chrono be when shooting during load development?

[HoMiE]

10’ is where I put mine screens when using chrono 

[Out of Ammo]

!0'-15" is where I put mine.

[floater]

I set up at 12 feet.

[Sarge]

 Appendix C2 of the USPSA rulebook says:

 

"3. In all cases, the skyscreens must be positioned and spaced per the manufacturer’s
requirements for the chronograph in use. The closest skyscreen must
be placed no less than 10 feet from the shooting location."

 

If you put them at 10 feet you will get the closest readings to an actual match chrono.

 

 

 

[Red Ryder]

 Appendix C2 of the USPSA rulebook says:
 
"3. In all cases, the skyscreens must be positioned and spaced per the manufacturer’s
requirements for the chronograph in use. The closest skyscreen must
be placed no less than 10 feet from the shooting location."
 
If you put them at 10 feet you will get the closest readings to an actual match chrono.
 
 
 

Thanks

[RePete]

10 feet for pistol (the same distance used for competition) and 16 feet for rifle (negates the muzzle blast with a brake on it).

[Braxton1]

As mentioned before, USPSA rules require 10 feet.  The "kink" here is that most people use CED Infrared setups at matches. 

 

CED's instruction manual states "12 feet".  Just in case anyone would say in arbitration that the "manufacturer's recommendation" trumps the USPSA's "10 feet", I do my setups at 12.

 

In reality, it shouldn't matter, especially with a "chrono in a coffin" and non-magnum handgun/PCC rounds.  The minimum distance is there to negate the possibility of muzzle blast tripping a sensor.

Edited March 31, 2018 by Braxton1