Question on airstrippers, shrouds, moderators, etc

[Vmaxpro]

So Im designing a neat little setup for my brocock that allows me to use fx liners. So far its going well! Has double carbon shrouds, and some other stuff. Anyhow my question is how neccessary for accuracy are any kind of air stripping device whether its a moderator, actual air stripper or baffled shroud? I dont care about sound, I live in the mountains with maybe 3 neighbors a few hundred yards away. As of now its just the liner comes flush to a 28mm 11 degree crown.

[Vmaxpro]

Id also like to see if anyone has any super slomo videos of pellets exiting the barrel on a pcp? And if it helps, its a 700mm length and I use a super light hammer that just “ burps” the valve. Not much pressure coming from the end.

[Mod90]

There isn't really any hard and fast rules for what length or thickness or type of barrel would actually  have a need for any sort of air stripper or shroud or moderator for the purposes of accuracy. Generally speaking, once it's not a soda straw barrel with crazy harmonics and the crown is in good condition and form, you won't know if it will benefit from a muzzle attachment, or perform worse.
For example,  I've seen some barrels where adding an adjustable air stripper and adjusting in .5mm increments gave no positive results, but mounting a heavy metal moderator on the end closed groups up nicely. And then others that just wouldn't group with a bare muzzle,  and shot worse with the heavy moderator yet shine bright with a properly tuned air stripper.
My advice,  shoot her bar muzzle and see how she does. If there's room for improvement, then start considering whether an air stripper, moderator or shroud would be of benefit. As an idea, thinner barrels tend to see a lot of benefit from adding some tension to them by way of tensioning, and shrouds can be used for this.



as per slow motion pellets being fired from a PCP,  check out H&N's YouTube channel, they have slow motion video of different pellets exiting muzzles, but no info on power plant, velocity, power level,  crown  etc.

good luck