Tuning FX 700 mm shroud on a 600 mm barrel?

The shrouds screw to the front of the barrel, so I’m not sure you’ll be able to use a longer shroud on the short barrel

Would a carbon fiber tube and another shroud end cap work ?

Would a carbon fiber tube and another shroud end cap work ?

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trlrman, I tried this similar idea on my Dreamline .25 600mm.

I was adding a carbon fiber shroud that came longer than I had and decided to add an additional end piece air stripper to the existing one to give me closer to a 50mm increase in shroud. Concept and execution were there, results were disappointing. Air turbulence was disrupted and pellets actually clipped the front of the end cap. Accuracy was compromised as well. We disassembled the stacked air strippers, cut the carbon fiber back to factory length and all was hunky-dory. Others might have a more scientific approach and have better results, stock measurements worked best for me in the end and kept it a pellet on pellet. Take it for what it's worth. Have fun

Patrick

Otherwise I believe I saw a 600 mm shroud for sale on classified ads if that's all you need 

Koi is about same size as the shroud I'm using one on my compact so I can run a 480 cc and Huma bottle reg for 2 regs and a bigger bottle 

Just get a huma mod 30. You can remove chambers and make it super short or semi-short or whatever you like. I have 4 huma moderators I think. 

On my FX Crown, you can use a 700mm shroud on any length of liner you like. The barrel system is "super-light STX". Not like the older barrel system with the liner sleeve and all that



Superlight below. The liner just floats on spacers, so it is centered inside the shroud. This liner has carbon tube epoxied to it. Also, the Nova Star to the bottom right has the same huma mod 30 on it, just more chambers.

https://910airguntuningandrepairsllc.com/collections/ernest-rowe-custom-shop

It stiffens the liner and makes it less sensative to whatever tune may or may not be on the gun. What this means is that this barrel shoots tighter groups and has more consistent point of impact across its entire power range, and with all projectiles I've tested. Some projectiles like wadcutters and crow magnums will still not group well due to their poor aerodynamic profile. No helping that, aside from shooting them very slow

madeintheuk said:

The shrouds screw to the front of the barrel, so I’m not sure you’ll be able to use a longer shroud on the short barrel

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Could you screw a 600mm shroud on a 700mm barrel?