So how are those FX Crown's doing so far ?

I just counted my empty tins of .25 pellets and I have shot over 2000 rounds of JSB pellets through the Crown since taking delivery on 12/27/17, most were 25.4 gr but I did shoot two full tins of 34 gr as well. After setting up the Crown to my liking I just shot over Chrony to check velocity because I noticed regulator had creeped up a little, maybe five bar, and velocity was a little off so I removed bottle and lowered reg pressure, screwed bottle back on and slowly adjusted regulator to where I had set before. Then shot over Chrony and velocity is right back were it should be 885-890 fps on number 4 setting of power wheel. Crown has been lights out accurate and having regulator pressure gauge enables you to keep an eye on things just in case.
 
My Reg pressure is set at 130 on gauge, I also adjusted hammer screw accordingly, just remember that increasing just the regulator pressure will drop the FPS, remove your bottle,
shoot once to degass, then use 2.5mm ball end hex key and turn screw in maybe 1/2 turn, screw bottle back on and turn reg screw CCW keeping eye on gauge, when you get to say 120 bar shoot gun once to stabilize reg pressure. then slowly increase until you reach 130 bar. I set wheel to #4 and checked FPS with 25.4's. Then adjusted hammer tension
to get where I wanted to be (885-890). Then I increased tension to MAX setting and shot 34 gr JSB's and they were right at 840 - 845 and that is where I stopped.
If you shoot 25.'s on MAX they are too fast (940) and groups open up. The 25.4's like to stay under 900 fps, the 885-890 speed are really accurate.
 
Mine arrived last Thursday and I’ve put two tins of JSB .30 44.75 grain pellets, and a handful of NSA 66 grain slugs down range. 
So far my gun is on point. Stacking pellets at 45 yards, and just over an inch pattern at 100 yards. 
The NSA slugs are not engaging the rifling as well and have some wobble. At 109 yards they have opened up to about a 4 inch spread. Same spread I was getting from the JSBs at 175 yards today. 
It may be the most accurate gun I own. 
 
"AWCG"Mine arrived last Thursday and I’ve put two tins of JSB .30 44.75 grain pellets, and a handful of NSA 66 grain slugs down range. 
So far my gun is on point. Stacking pellets at 45 yards, and just over an inch pattern at 100 yards. 
The NSA slugs are not engaging the rifling as well and have some wobble. At 109 yards they have opened up to about a 4 inch spread. Same spread I was getting from the JSBs at 175 yards today. 
It may be the most accurate gun I own. 

What type of slugs are you using? it can also be the design of the slug that's just not right for long range shooting (like the hunting slugs). If you use those I don't think they will do any/much better with a different barrel...
 
Anybody played around with a .30? Mine came from Utah Air Guns, they set the reg at 150 - It was shooting 44 grain JSB's around 855-860. After one tin of pellets I was getting close to 40 shots before the reg dropped off. I went from 250 down to 150 bar with 40 shots and could not see any difference in accuracy. I think that's pretty good for what I will be using the gun for. 
On another note I dont think your hearing much about the Crown because people are not having any problems with them. My opinion is that it may be one of the best PCP's ever mass produced......Just my 2 cents.
 
"AWCG"I was using NSA 66 grain, .30 slugs. FX is making a barrel sleeve just for the NSA slugs with a faster twist rate and I believe a more aggressive rifling. I’m going to stick to JSBs until the new sleeves are available.
If I look at the slugs I think those are primarily made for hunting. The length and shape ratio of the slugs are not ideal for long range projectiles. You might be able to get them to group tighter than the 4" it's doing now but I don't think you will be able to achieve 1MOA at 100 yards.

But please post your findings here as soon as the barrel arrives ;) I think more people are interested in these projectiles
 
"broekzwans"
"AWCG"I was using NSA 66 grain, .30 slugs. FX is making a barrel sleeve just for the NSA slugs with a faster twist rate and I believe a more aggressive rifling. I’m going to stick to JSBs until the new sleeves are available.
If I look at the slugs I think those are primarily made for hunting. The length and shape ratio of the slugs are not ideal for long range projectiles. You might be able to get them to group tighter than the 4" it's doing now but I don't think you will be able to achieve 1MOA at 100 yards.
But please post your findings here as soon as the barrel arrives ;) I think more people are interested in these projectiles
Just put in the order for a new barrel kit (.22, currently have a .30 on the gun). AoA says they should be available in April. No word on when NSA specific liners will be in. 
 
It will drive a nail into a log at 45 yards. 
https://youtu.be/Yj1YU_PkQKc

Forgive the crap image quality.
Also I don’t know how to embed a video here. The link is above.
28fae7468a85e1ec326e73169416cb7c.jpg