FX bad groups with slugliner and donnyfl ronin

[Powerage]

Update: 



I decided to reassemble everything. I added one more o ring on the liner and now it’s works. I also decided to tight the screw that hold the liner I place a little harder. Got some good groups with the nsa 29.5 grain. Again thank you everyone

 

[xindaris]

Just thought of something you might try. Add 2 more o rings to the liner. 2 at the breach end close together, 2 at the muzzle end close together as close to the muzzle as possible and space the rest equally between on the liner. I think you will see even a greater improvement.

 

[Powerage]

Just thought of something you might try. Add 2 more o rings to the liner. 2 at the breach end close together, 2 at the muzzle end close together as close to the muzzle as possible and space the rest equally between on the liner. I think you will see even a greater improvement.

Maybe I’ll try that . Right now I’m afraid to touch it cause it shoots nice. Just placed a apple at 180 yards . The 29.5 grain does the job 

 

[Drumsnguns]

Try moving the liner external o-rings closer together with one dead center and the other two maybe 3-4" out from the center on each side. I had the same problem. I did have a loose moderator and FX sent me a new one.

Experimenting with o-ring placement will yield a sweet spot. I have ordered more rings to try different groupings on the barrel. I'll publish what I find later.



Good luck

 

[xindaris]

Remember to keep a couple close to the muzzle to counteract the weight of the moderator.

 

[FX-USA]

Hello. Today I got my slugliner for my 700 mm 25. Cal. Fx impact. With the pellet liner I have been pushing mk2 33.95 grain at 950 FPS with nice groups at 100 yards. I have some nsa on its way in the mail so I decided to change the liner and shoot some groups with the MK2 33,95 pellets. And to my surprise they where all over the place at 30 yards . I tried to remove my Donny FL ronin and it gave me nice groups . Tried to reassemble everything a couple of times but still the same problem . Any ideas ?

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FX Airguns Customer Service team



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