Umarex Notos 380mm fx barrel

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88turbocoupe

88turbocoupe

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Jul 14, 2024
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new to this forum just got into these pcp guns not to long ago
bought a notos for tinkering with
so far did the buck n rail accessories Hawke 4-16 x50 sidewinder Scope also added a 15cc plenum and also adding the 30cc as well
ordered the 380mm FX barrel kit from c88 on ebay hoping to get a little more accuracy and fps
i figure in all reality going from 300 to 380 the extra plenum volume i added should be enough
if not i did buy a 300cc carbon tank and the Huban external regulator

anyone done the barrel swap? ive talked to 2 people and they say there in the 780 to 800fps range with 1/2-dollar groups at 50 yards 28-33 fpe
only going by pics on the forums but sounds realistic
they also were talking about doing some port work but only issue i see is that block behind the air cylinder having like a 2.5mm passage
that to me looks like a restriction
i had thought of opening up to maybe 3.5 but not sure if that block is available in case it dont wok so well
i believe the part is part number 42?
i dont want to mod it if i cant get a replacement
 
88turbocoupe said:
new to this forum just got into these pcp guns not to long ago
bought a notos for tinkering with
so far did the buck n rail accessories Hawke 4-16 x50 sidewinder Scope also added a 15cc plenum and also adding the 30cc as well
ordered the 380mm FX barrel kit from c88 on ebay hoping to get a little more accuracy and fps
i figure in all reality going from 300 to 380 the extra plenum volume i added should be enough
if not i did buy a 300cc carbon tank and the Huban external regulator

anyone done the barrel swap? ive talked to 2 people and they say there in the 780 to 800fps range with 1/2-dollar groups at 50 yards 28-33 fpe
only going by pics on the forums but sounds realistic
they also were talking about doing some port work but only issue i see is that block behind the air cylinder having like a 2.5mm passage
that to me looks like a restriction
i had thought of opening up to maybe 3.5 but not sure if that block is available in case it dont wok so well
i believe the part is part number 42?
i dont want to mod it if i cant get a replacement
Click to expand...
I don't know if this will help you,but I have a 380mm superlite in 177 for my crown. It'll shoot the 13.4 redesigned jsb pellets in very tiny group out at 50 yards. I tried the 10.4 jsb pellets and they did not do near as well. I sped them up and slowed them down. 3quarters of an inch groups at 50 was best I could get,while the 13.4 would wallow me a tiny hole consistanty ,so I shoot the 13.4 grain pellets,the redesigned ones. Not the tube looking pellets,
 
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Hunter25 said:
I don't know if this will help you,but I have a 380mm superlite in 177 for my crown. It'll shoot the 13.4 redesigned jsb pellets in very tiny group out at 50 yards. I tried the 10.4 jsb pellets and they did not do near as well. I sped them up and slowed them down. 3quarters of an inch groups at 50 was best I could get,while the 13.4 would wallow me a tiny hole consistanty ,so I shoot the 13.4 grain pellets,the redesigned ones. Not the tube looking pellets,
Click to expand...
thanks for the info sounds what im looking for
 
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wow very nice fit and finish i like it
slim and clean

i did buy the plenum kit from c88. i also just got the extension as well so i can reg pressure.
i did buy the 380mm barrel kit as well. should be on the way soon
my buddy is machining some hammers different materials different weights (future tinkering)
just looking to get into the high 700s 780s or so with decent impact and accuracy.

I'm not looking to break the speed of sound. i just ordered a new 50 Cal pump that looks like the Notos on steroids' 15 in barrel.


i like your build and the performance gains if this gets somewhat close to that i will be good to go.

question is does the liner fit snug in that tube and does it need to be aligned?
does the FX barrel have a good crown?

did you notice if the FX barrel is finicky with any pellets?
just curious
appreciate the info thanks
 
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88turbocoupe said:
question is does the liner fit snug in that tube and does it need to be aligned?
does the FX barrel have a good crown?

did you notice if the FX barrel is finicky with any pellets?
just curious
appreciate the info thanks
Click to expand...
First question is for @Firewalker - he assembled my kit, he cut a 500mm barrel down to remove the choke and recrowned it

I've been shooting NSA .2175 17.5gr slugs very accurately. The only .22 pellet I have is CPHP so I can't comment on that. I'd like to try some JSB 18gr pellets but haven't gotten any yet.
 
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