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PostPosted: Thu Nov 09, 2017 11:14 am 
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Joined: Fri Mar 29, 2013 10:46 am
Posts: 47
Is Electronic Digital Trigger Pull Gauge more helpful and provides additional advantage than traditional 500gm weight checker to know about the trigger weight.

With Electronic guage, are you able to set trigger to 505 gm instead of possibly higher trigger weight with the latter method?


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PostPosted: Thu Nov 09, 2017 11:49 am 
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Joined: Mon Apr 04, 2016 1:35 pm
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Do not use electric meters. In competitions trigger weight is always measured with normal 500g/1000g weight.

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PostPosted: Thu Nov 09, 2017 12:13 pm 
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Joined: Wed Feb 13, 2013 8:56 pm
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Location: MInnesota
amarinder wrote:
Is Electronic Digital Trigger Pull Gauge more helpful and provides additional advantage than traditional 500gm weight checker to know about the trigger weight.

With Electronic guage, are you able to set trigger to 505 gm instead of possibly higher trigger weight with the latter method?


Electric trigger pull gauges are extremely difficult to operate accurately. Use the weight system and set the trigger to break at the weight you want, then recheck that your trigger doesn't break with the required weight. Remember to give yourself a safe margin because air temp & even humidity can impact the weight required for your trigger to break.
- Dave

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PostPosted: Thu Nov 09, 2017 1:04 pm 
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Joined: Mon Mar 01, 2004 12:49 pm
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Location: Ruislip, UK
amarinder wrote:
With Electronic guage, are you able to set trigger to 505 gm instead of possibly higher trigger weight with the latter method?

Do you think that you are good enough to feel the difference between 505g and 515g.

Just use the proper weight and, to set the trigger, add a small coin.


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PostPosted: Thu Nov 09, 2017 1:35 pm 
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Joined: Sat Sep 04, 2004 6:04 pm
Posts: 1466
Location: Massachusetts
The advantage of the electronic gauge is that it can provide a lot of useful info the official weight set can't:

1) It can tell you how much margin you have, i.e. is it set to 525 grams, or 625 grams?

2) It can tell you (if you are careful) what the 1st stage weight is, vs the final let-off

3) It can tell you how consistent the trigger weight is, by providing the average and standard deviation of multiple samples.

It is NOT a tool to tune things down to the last gram. A typical trigger isn't that repeatable, and there is a bit of technique in getting consistent results. The same way with the official weight set. If you raise the pistol quickly or slowly, you can bias the results.

I would never set an air pistol trigger down any lower than 525 grams, so an official weight check will ALWAYS pass.


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PostPosted: Thu Nov 09, 2017 2:57 pm 
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Joined: Wed Mar 24, 2004 6:43 pm
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David Levene wrote:
Just use the proper weight and, to set the trigger, add a small coin.

I use the 20cent, 50cent, 70cent coin test.
An Aust 20c coin is 11g and our 50c coin is 15g, so add 20c for
500g Air, 50c for 1000g ISSF and 70c for 1380g Service.
In the US quarter is 5.6g so use two for Air and three for ISSF 1000g.


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PostPosted: Fri Nov 10, 2017 1:08 am 
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Joined: Fri Aug 03, 2007 5:17 pm
Posts: 69
Location: Colorado
In our club, we set all our pistol triggers so that they don't fire with a 520 grams weight (or last least don't fire 4 out of 5 times). In effect, it means we are likely close to what Doug recommends with an actual firing weight of 525 grams.

This way, if you travel, with weather/humidity/temperature/altitude/environmental or judge technique variances, you should still pass the 500 gram equipment check.

Traveling from Colorado Springs to other places has proven 520-525 gram triggers minimize any equipment check issues at other venues (often much more humid, hotter, and almost always lower in elevation).

I've not seen an electronic trigger gauge in our club...but I haven't looked for one either.

Does anyone know of any studies that investigate the 1st/2nd stage weight splits and impacts on accuracy? or if anyone has ever collected data with an electronic trigger pull gauge at a match to see how triggers were set between the first and second stage?


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PostPosted: Fri Nov 10, 2017 3:36 am 
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Joined: Fri Jan 06, 2012 9:22 am
Posts: 165
Location: North of England
Correx gauges are also good for setting up 1st and 2nd stage. Our Steyr agent uses one to set up shooters triggers at matches. They can be picked up quite cheaply 2nd hand on the usual auction site. 0 -1000 gm. Not 100 % accurate to test a pass for EQ though.


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PostPosted: Fri Nov 10, 2017 9:00 am 
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Joined: Sat Sep 04, 2004 6:04 pm
Posts: 1466
Location: Massachusetts
The Lyman electronic gauge can be bought new for less than $50 on Amazon. It can measure air pistol triggers easily, and service pistol triggers at 4.5 pounds and more, plus give you statistics. 1000 gram Corex gauges are pretty scarce on eBay, and are frequently beat up & of questionable calibration. Although you can occasionally find one for less, they are often listed for more than the Lyman gauge.


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PostPosted: Sat Nov 11, 2017 9:22 pm 
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No, no advantage but some disadvantages as an instrument measurement produces empirical measurements (and underlying probability issues).

Mass, on the other hand; is mass. Within the universal parameters found on Earth during an Air Pistol match you can safely assume that it is a constant¹.

-----------------
1) https://en.wikipedia.org/wiki/Special_relativity

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