Ok I'll share, but in the past I have taken a bit of a hammering from the commercial tuners whenever I did.
See here's the thing....
We follow trends. The trend then getting accepted as written in stone and sticking with it.
My issue is plastic guides, namely Delrin, or Nylon/Nylatron, Peek etc.
Sure they damp cycles and make the guns cycle feel nicer, but I've never noticed improved accuracy if the Steel guides were well made and well fitting (as they once were in the distant past.
I'm not talking loose fitting rolled Steel guides with a seem, but how they once were, from solid steel, often machined from one piece as part of the trigger block.
There is no doubt that Plastics damp better, but the use of plastic Top hats always reduces velocity.
Everyone clambering for the damped cycle plastics offer, but forgetting to do the deeper testing of what faster flight time to the target represents versus the better damping...
Also the additional weight of Solid steel components versus light weight plastics at deadening the more massive end of the recoil issue....heavy rifles often being better able to handle recoil than lighter ones etc..
So I tested....
One thing that got me started was noticing Pro Sports seemingly doing better when chucking out the tuning house plastic Top hat and going back to the OEM steel one....
Maybe Air Arms got it right when they designed it OEM....just saying...
My testing revealed a sweeter cycling, duller feeling Pro Sport when fitted with the Plastic Top Hat but not one that was actually more accurate. Indeed the steel Top hat gun, hitting closer to 12 proving more accurate if your technique was good.
I also noticed Plastics were expanding and contracting more during extremes of prevailing conditions. Not something I found with Steel components which all exp/cont at same rates ....
Less inextricable misses on a cold morning.