FX FX 380mm barrel...... much louder?

[aldea6]

Hello , I would like to put a 380mm barrel on my FX Crown , instead of the 500mm installed. I wonder how the noise will be increased ; is it a big difference between the 380mm and the 500mm in .30 cal , shooting at the same power. At the same time I think that the shorter barrel must be stiffer and could support a heavier moderator ?
Thanks.

 

[Airgun Al]

If your Crown 500mm shroud length is adjustable, it would probably be almost the same noise difference as fully extended vs. fully collapsed....

 

[madeintheuk]

It will be a noticeable difference in noise level at the same power output. My 22 crown with 380 was still backyard friendly, not so sure a 30cal would be.

 

[aldea6]

Better to put a DonnyFl Shogun , then .....
Thanks

 

[cra627]

ive got the 380 30 with hades running 830fps - its quiet enough for me with three baffles on the 1350 impulse air. The 380 can get real loud real fast so start slow and work it out for yourself with whatever mod you got.

 

[TonyJ]

With 380mm .30 cal barrel, definitely try and tune for a quick burst and minimal valve dwell, using a higher reg pressure, maybe 150 bar. Definitely a bark to it but it’s manageable with an LDC.