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PostPosted: Sat Jul 28, 2012 3:00 pm 
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I'm adjusting the reg on my S410 down 20ft/lb.

When you do chrony tests at your matches how far do you place the muzzle from the chrony?

Thanks.

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PostPosted: Sat Jul 28, 2012 3:52 pm 
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There is not a set distance... Usually the shooters tests their gun in front of a witness...so from 1 to 2 feet approximately, as long your not 10yds back shouldn't matter lol

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PostPosted: Sat Jul 28, 2012 3:54 pm 
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Thanks

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PostPosted: Tue Jul 31, 2012 4:12 pm 
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More of a concern is the light at that moment in time and not uncommon to see those Chrony register 10%+ fast.


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PostPosted: Thu Aug 02, 2012 6:59 am 
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Jon wrote:
More of a concern is the light at that moment in time and not uncommon to see those Chrony register 10%+ fast.


All Chronies we use have the light system attached and are shot outside in the shade...so lighting is not an issue

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PostPosted: Wed Aug 08, 2012 9:15 am 
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You should be using the manufacturers specified distance so that your readings are accurate. You can usually download an owners manual online.

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PostPosted: Wed Aug 08, 2012 1:04 pm 
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BJP wrote:
You should be using the manufacturers specified distance so that your readings are accurate. You can usually download an owners manual online.


8. Chronographs should be at least 10 feet (3 m) from the muzzle of high-powered rifles, but can be closer to guns with a lesser blast. Five feet (1.5 m) is about right for .22 rimfire firearms. Shotguns should be fired at 5 feet because of possible damage caused by the spreading pattern of the shot and errant wads.
http://www.shootingchrony.com/manual_AS ... ng_started


They recommend 5ft with a .22LR, considering most guns being tested (in our case) are 12FPE PCP's, there is not much blast to speak of. If the difference of 2-3ft makes a difference then the gun is shooting hot anyway, and will exceed 12FPE in its bell curve...

I have only seen guns shooting too fast on accident, as peoples clicks are set for a certain value, if for whatever reason the gun exceeds or decreases from the velocity used to create this data...there is little chance of shooting a good match

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PostPosted: Wed Aug 08, 2012 3:08 pm 
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I use 6" for Airguns

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PostPosted: Wed Aug 08, 2012 5:36 pm 
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It was a bad weekend for me and my S410. The reg is not working properly and I drop the walnut stock and it landed on the highest point of the cheek comb. Sad day it was..... Luckily I'm getting older so my temper has settled down quite a bit now. Just ordered a new air cylinder from AGS and putting it back to factory settings when it arrives. No more fiddling around with regs from this point on.

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PostPosted: Wed Aug 08, 2012 6:17 pm 
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I've settled on 3 feet except for big bores, they sometimes need more because of the muzzle blast....

Bob

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PostPosted: Wed Sep 12, 2012 6:45 pm 
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Jon wrote:
More of a concern is the light at that moment in time and not uncommon to see those Chrony register 10%+ fast.


I've run dozens of IPSC matches where we've chrono'd at least of couple of thousand ammo samples and never seen that kind of variation over a Chrony.

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