Fx Revolution

Do you mean the Revolution?
Yes, I have one. It's tremendous fun when I have time to shoot it. But, I rarely have time to shoot it. "Loud" can be different from one person to the next but, no I don't think it's loud. (pm sent)
Tom

The only PCP that will enter my collection is an FX Impact. The only other PCP that I own is an FX Independence, and the fact that it has a built-in pump makes it the deal weapon for all circumstances (hunting, plinking, target shooting). Won numerous 50-meter competitions with it (meaning, it's damned accurate) and that rifle was my first PCP and the only one I still own. And I've owned many other (brands/PCP's over the past 5 years. None of which offer the same amount of enjoyment as the Independence.

I shot one at Percision Air.

We were shooting indoors, and at first it was not suppressed so it was kind of loud, but not that bad. The owner then put on a small suppressor that he thought would not help much, but it quieted it down enough that the guns moving parts were the loudest thing and they are not loud at all.

I have one in .22 for over a year now.
its a blast to shoot and can put a whole mag on target dead center in few seconds.
I used for hunting and on paper target. Never done a chrony string but it is one of the most accurate guns i ever shot and can say as accurate as my impact.
I faced several issues with it, first was that breach o ring blew after 200 shots. Replacing it with an oring that i got online prevented the gun from auto cycling (replacement oring surface is not as smooth as the OEM oring). Putting an OEM oring solved the issue... for a while.
During a hunting trip the gun would cock but pulling the trigger will do nothing, had to drop to the shop and he fixed it.
The bolt handle is attached to a ring that pulls the bolt to cock the gun. This ring is free floating and the handle is attached to the ring with two screws. I have noticed after 500 shots or so that the handle is wiggling, tighten up and its good to go for a while. Few times doing so and the thread is ruined for good. Right now trying to find a shop that will fabricate a similar assembly. 
never ever play with trigger trying to adjust it. It will ruin the gun and this is stated in the manual!

You will need a high mounts to mount the scope as the mag is located on the upper half of the block.
The gun does not like the hot weather (40°C) it will start make those mouse fart poops where you could see the pellet spit just in front of you. The work around is to keep pushing the mechanism a bit forward after each shot the gun will cycle the next round and will cock itself put the bolt will not go all the way forward.
I shot tens of jsb 18gr tins and it is so accurate and cycles most of the time. I've read that it likes jsb 15 gr better and cycles better.

Notice that when the gun does not auto cycle after a shot (is not cocked) it has fed the next round، so you have to pull the bolt, remove mag and then shoot the pellet in the breach and continue shooting with the mag. Otherwise it will double feed pellets. I gave to friend to shoot and he managed to put 6 pellets with me beside him but didn't notice.

Finally here's a photo of my revolution.