Chronograph distance


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showmebob
October 10, 2012, 05:14 PM
I've been setting the chrono about 10-12' in front of me for pistol measurements, Is that distance adequate to avoid muzzle blast for 223 and 30-30 rifle rounds as well?

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silicosys4
October 10, 2012, 05:20 PM
for most pistols I can shoot within 10' or so. the 44 mag and ar-15 needs about 15', and the FAL needs about 15'-20'. When I tried shooting any closer with the rifles, I'd get false readings from what I presume is muzzle blast.

showmebob
October 10, 2012, 05:43 PM
Thanks!

jr_roosa
October 10, 2012, 08:20 PM
I can do 10ft with my 30-06 Garand with a Beta Master Chrony, and that's just because I have the cable marked at 10ft for pistol work and haven't bothered to measure a 15ft or 20 ft mark. Also my rifle range firing line has a big drop off in front of it that limits how far away I can put the tripod. It's probably a little close, but I get consistent measurements. I get more problems with shooters in other lanes, so I only chorny if I can get set up somewhere by myself or far down the line from other shooters. I think that as long as the muzzle blast is from the shot I'm measuring, the machine has already caught the bullet at both sensors and hasn't reset yet.

-J.

stavman11
October 11, 2012, 06:23 PM
I set up at 10' as well

Never an issue yet

Ridgerunner665
October 11, 2012, 06:25 PM
I've chrono'd everything from 22lr to 300 Win Mag from 10 feet away...never an issue.

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