Waiting inbetween shots or not?
Hello, if you have a regulator, do you really have to wait between shots? I saw a video by Robert Lane regulators where he explained that it takes milliseconds for the regulator to seat itself between shots because the inside moving part is only going back and forth approximately 0.8mm.
Some people suggest waiting between the shots when you chrony your gun but now I question this method, it seems cocking your gun is enough time for the reg to seat itself.
Here is the video https://youtu.be/f6yHTuM76kw
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I believe it’s not the reg but the valve and or valve spring, it may need replacing and or spring adjusting (maybe the retainer backed out).
My theory is that the valve after sitting closed for longer has a bit more of a harder time opening up when the hammer hits.
This makes the amount of peck air packet release into the barrel end up at a different place/location inside of the bore behind the pellet.
The more time waiting between the shot the air pact moves slightly forwards inside the bore.
Thus causing a different pitch in the barrel harmonics that’s giving the accuracy discrepancies even though the velocities are not affected.
…………… just my :2cents:
I’m planning to check my valve/spring of my Cricket Compact 177 soon when time permits me ………
~ Greg
I have experienced this on my 25 Vulcan. Been wondering why I can’t group well when paper punching. I then waited 15 seconds in between shots and bingo. Groups tightened up immediately.
I want to add AGT suggestion is to get regulator replaced under warranty
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My Cricket Compact 177 like me to wait a bit between shots, about 15 seconds.
I chrony and shoot, strange thing is there is no difference in the fps/velocity but it groups tighter if I give it that time between shots ……….
~ Greg
I don’t think there will be a noticeable difference.
While learning to use a test gauge to test and adjust my .22 Vulcan Regulator I discovered a difference in BAR readings from 110 BAR while repeatedly rapidly cycling the Reg chamber vent screw to a reading of 113 BAR when I let it rest for a minute or two.
Does +3 BAR make any difference in a slightly cooled barrel ❓
To damn cold here to do any meaningful target groups now. 👿
I’ll be interested in your findings.
It depends on the tune. If your power curve drops off sharply after the regulator pressure is reached or jumps up considerably that 3 bar will make well over 10 fps difference.
Cricket,
I don’t think there will be a noticeable difference.
While learning to use a test gauge to test and adjust my .22 Vulcan Regulator I discovered a difference in BAR readings from 110 BAR while repeatedly rapidly cycling the Reg chamber vent screw to a reading of 113 BAR when I let it rest for a minute or two.
Does +3 BAR make any difference in a slightly cooled barrel ❓
To damn cold here to do any meaningful target groups now. 👿
I’ll be interested in your findings.
I’ve experienced a high fps for the first shot and for the shots after long intervals. It’s tuned for 20fpe only
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I think 5sec. between shots should be enough. I usually wait 5sec for fill regulator.
My gun has 20 fpe or 27J, I guess I’ll have to experiment in front of the chrony witb rapid fire
Some people suggest waiting between the shots when you chrony your gun but now I question this method, it seems cocking your gun is enough time for the reg to seat itself.
Here is the video https://youtu.be/f6yHTuM76kw
It depends on the air usage and regulator flow capacity and plenum volume. As an example it takes around 15 seconds for the Huubs tethering regulator to fill up after a 220 fpe shot from my Evanix and even after that it will be filling very slowly for the last bar or two. If you are serious about keeping the fps variation small it is a good idea to give the regulator some time to fill, that last bar might take quite a long time depending on the plenum volume of course.
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Wow, you sure know your stuff Greg. I’ve seen nothing but intelligent productive awnsers from you, keep it up! 🙂