This fantastic thread talks about how to adjust your hammer after you've installed a regulator. Maybe I missed it, but I'm not clear on how to choose your regulated pressure in the first place. Do you just plot unregulated pressure vs. velocity and take the pressure that produces your desired velocity? Or is there more to it than that, since you're going to be adjusting the hammer after installing the reg?
Choosing a regulator set point
- Thread starter hasenpfeffer
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It's close to that. You will actually need a bit more pressure with the reg then you had to have unregged. This is due to the volume of air (plenum) available for the shot. If your desired velocity is at say 120 bar, you may need to set the regulator at 130 bar initially and then fine tune from there based on chrony results.
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Check out this site on YouTube. Robert Lane Design he is a long time regulator maker. Dozens of videos on all aspects of regulator use, design, set-up and more. I know in one of his videos he shows charts for average initial bar setting for fpe for various calibers in general. Bill
https://www.youtube.com/user/robertlanedesign/featured
https://www.youtube.com/user/robertlanedesign/featured
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