Swarm whisper 177 gen 1 barrel

[Mascot01]

Was curious if anyone knows where to be able to find a replacement barrel for swarm whisper gen 1 ? Got it from my bil , apparently a pellet got stuck and he couldn't get it out so decided to hack off a chunk of the barrel (badly done slanted, etc) accuracy has suffered badly from it so I'm hoping to either be able to replace barrel or at least fix the janky cut job and any advice or ideas would be awesome and appreciated.

[Mascot01]

Forgot to add pics

[OleTomCat]

Barrels can be ordered through Gamo but they have to go to an FFL dealer, the other problem is that the pivot screw is chemically bounded so it can't be easily removed to replace the barrel, has to be drilled out and then heat and force applied. 

I would cut off the muzzle device then recrown the barrel, youtube has some videos on this.

[Mascot01]

Thanks , yeah that seems to be the best route from what I'm seeing is to fix the cut and recrown  like you said. Hoping to have time to soon.  Will probably have to use a file unless I can find a new rotary tool soon.