Anybody fit a Huma Regulator to FX Crown .25 yet ?

Sorry I can't answer your question.

But do you have the same reg as the Impact? Otherwise Huma doesn't make one yet for the Crown with the larger washers.

I checked when I first got my Crown, because I didn't expect much from the factory reg. But the reg in my new Crown, now about 1,500 pellets/slugs, can probably hang just fine with the Huma. 

Yes mine does creep after sitting for a while, but the performance is great. The creep doesn't bother me a bit because all I have to do is burn a shot and it's right where I set it.

Extreme Spread is consistently in the single digits. Last two strings I ran were ES 6 and SD 2, which is as low as I ever got from the Huma in the Wildcat I had. 

The lowest I had with the factory reg in my Crown was ES 5 and SD 1.5.
 

Nice!!

Looks like the quality we've come to expect from Huma!

Just make sure you check the manufacture date of your rifle.

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I'd like to try one. I guess I'd go with the 145-190.

The high pressure version will adjust from 90 bar up in my experience with the Impact. I don't know why they advertise 145. You'll need a hammer weight to open the valve above 150 bar... about $50 from FX USA and comes with a larger valve seat and new hammer spring. Buy the Huma reg in the USA unless you don't mind waiting 3 weeks for their slow shipping.