All very helpful and insightful replies, my gratitude to you all thus far! Tuning on the knee.. I just gave that a quick scan through and that is fascinating stuff!! Definitely something to dive a bit deeper into and put in the mental toolbox. Thank you for that reference particularly.
I'm not an expert yet on pressure systems and that hasn't been my background, but I can conjure up a bunch of different things in my mind all the way from the diameter and brinnel of the lead pellets I'm using, to some unattenuated harmonic in the barrel system, to an occluded control signal port on the regulator, to... etc, etc... exactly what i didn't want to get into... a science project.
I do "science stuff" all day and airgun vermin patrol was my hope to just mentally check out and eradicate some vermin around the property.
My nephews have got me into playing some video games with them and they are absurdly addictive. Vermin Patrol is that experience to the power of 10!


My wife thinks I need professional counseling for it

Seriously, the challenge is insatiable to me. Since June of this year, I lost count after 400 confirmed. I have got to be in the neighborhood of 500 of the little critters now. And I only missed once!! (small text... per 2 shots

)
I will probably do the science thing tonight though and go see if I can actually record Shot string married to Velocity married to pressure tonight for the "sake of science". And after that I'm probably done with it until I call Crosman Benjamin tomorrow.
mrw