FX Panthera/Dynamic - Plenum/shroud combinations

[R0B]

Having now taken the plunge and bought a Dynamic, I was thinking about future calibre swaps. There doesn't seem to be any definitive guide as to the plenum cc and shroud length compatability.
It seems that there are compacts (300mm, 380mm and 385mm) barrels 500, 600 and 700mm barrels. There are Micro 12ft/lb plenums, Macro 47cc, Magnum 95cc and Magnum XL 156cc. The shoud lengths don't seem to be listed with any compatability chart. Can anyone shed any light on it please?

 

[trlrman]

following

 

[BHainz]

From the FX drawings and parts list PDFs. Hopefully this helps.

I've been thinking about mixing and matching some different sizes plenums and shrounds. For example I'm thinking about using the 220mm .30 hunter compact plenum with the .22 210mm shround so I can use a 700cc bottle in front with the heavy duty huma-air bottle conversion but still have the the barrell long enough to fit a moderator and not hit the bottle.

 

[R0B]

Thanks for the reply. I am guessing that the Macro plenum is for the 300mm barrels, the Magnum is the the 380/395mm barrels and the Magnum XL 600 and 700mm?.

 

[Smok3y]

FX’s website says the following:
300 and 380 use Macro
395 Macro XL
500 Macro
600 and 700 Magnum XL

 

[R0B]

thanks

 

[terry mc]

I know this is an old thread.
However I wanted to say thanks for the input from those on here.
It helped me in building what I set out to do which is a one off piece in the form of a 700mm King.

I will post up a thread once I get it all done.
Did all the little pieces to do the barrel swap and got out earlier this week and shot 40 gr slugs as 960fps on a stock hammer.
And very quiet at that.