Airgun Technologies Uragan 2 hammer spring adjustment.

Old said:

Thanks for the info. That exactly describes what I am seeing. Here's a bunch of different hammer adjustments.

Edit to add:
I'm also in PM's with OP, I'm not trying to thread hijack -- just help color in a shared issue.

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Never adjusted anything on my U2, just started acting up. AGT already introduced a modified balanced valve to address problem, neither Krale, nor AGT, were willing to replace old style valves unless owner reported a problem. Cost me shipping to Netherlands, both ways, for warranty work but still saved big dollars over US purchase price. WM

I'm bumping this thread because I finally got around to getting the huma reg installed. 4.5 std after install @ around 970 fps. A little too spicy for pellets at 145 bar. Dropping it down to 140 bar and going to test again. I've seen JSB's happy around 900 fps.

... I miss my taipan