Other Regulators and higher PSI airguns

[Airgunmann]

Knob turners that is a way of tuning you know and is very efficient
It's usually hi reg pressure to get a short Burst of high pressure for a shorter barrel usually it's accurate but your extreme spread suffers more from it otherwise I know what you mean

 

[MEC17670]

I just opened my .25 600mm barreled Crown mk2 for its yearly service, cleaning and replacement of orings. I run my reg at 178b (Huma) as I'm shooting 33 gr Zan slug at 980. Great accuracy, and able to buck the wind nicely.
I found the interior very clean , with all the orings looked pretty good with the exception of the one that is located on the piston head. It appeared to be ripped. I had noticed every now and then a drop in velocity. Price of pushing the limits. No biggie, easy fix. I do add a drop of silicon oil in my fill port occasionally to keep the insides happy.

 

[jmohme]

I just opened my .25 600mm barreled Crown mk2 for its yearly service, cleaning and replacement of orings. I run my reg at 178b (Huma) as I'm shooting 33 gr Zan slug at 980. Great accuracy, and able to buck the wind nicely.
I found the interior very clean , with all the orings looked pretty good with the exception of the one that is located on the piston head. It appeared to be ripped. I had noticed every now and then a drop in velocity. Price of pushing the limits. No biggie, easy fix. I do add a drop of silicon oil in my fill port occasionally to keep the insides happy.
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You hit on the key to all of this. "Yearly Service".

All mechanical things need occasional service. Nothing mechanical lasts forever, but perventive maintenance can sure go a long way to keep you shooting.