Slug Liners and FX Crown Continuum

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steelo32

Member
Jul 15, 2019
124
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South Dakota, United States
So I am royally confused. Slug Liner B is for pellets specifically JSB heavies? Liner A is for slugs.... what I can’t figure out for the life of me is why my Crown Continuum in 25 shoots JSB Heavies better than any other pellet... it’s accuracy is unreal. Granted the FPS drop is significant compared to the normal JSB units.... is Liner B that FX is peddling for older crown units that didn’t shoot heavier pellets as well? Does the CC come from the factory with Liner B already? I’ve been running JSB heavies out of my CC for a month and the accuracy and wind bucking is unreal... I’m just trying to figure out if I am getting exceptional performance out of a barrel that isn’t truly designed for them (I know the platform was designed around normal JSB pellets) .or whether slug liner B is being sold for older crown models to make them shoot as well as the newly released CC shoots them.... 



Any insights?? 
 
There is only one slug liner, A, for now. There's two pellet liners, A and B. (A for lighter weight pellets and B for heavier weight.) I believe FX has the pellet A liners on the STX guns as standard, so that's probably your case. As far as why it likes JSBs, FX has liked them since the original smooth twist system, so I'd hope they work well with this newer one! The slug A and pellet B liners are just ones you can get if they suit your purposes and aren't necessarily better or worse. Now a slug barrel might shoot pellets good or even great but that's not the intent. There will be differences in the spin rate (normally faster in a slug barrel), choke (usually less), and other more technical details that I'm less knowledgeable about.

https://www.airgunnation.com/topic/fx-airguns-announces-new-additional-fx-stx-liners/
 
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The slugs liners I have used both the 600mm and the 700mm have shot slugs exceptionally well and also the King Heavies very well, It just boils down to the slug liners' twist rates working well with the heavier pellets. Here is some more info for you.

Stoti

1568170137_18230084165d786099bae3b5.10559434_1555520480_1921005845cb75be07238b5.40178374_Twist...jpg

 
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Wait, what?

When I had my shroud/barrel apart better than a couple of months ago, I remember seeing no liner, but a plain barrel in the shroud aligned using 3 'O'-Ring spacers. There is no 'carrier' barrel to slide a liner inside, right? So how can that be called a liner when it's just a barrel? I am looking for a 600mm slug barrel with shroud by the way, but have had no luck without buying a new slug barrel, then a pellet barrel/shroud combination and switching them out so I can sell the pellet barrel....complicated I know.

Am I remembering wrong?

mike
 
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Are you shooting JSB 34gr in both long and short barrels with success? Any idea what speeds you were shooting at?

At what distance were you shooting? Any pics of groups? Maybe a comparison 25.4 to 34. Not doubting your claim but “unreal accuracy” can really vary from person to person.

I only tried the 34gr MKI and MK2 in my 700mm barrel and they didn’t group as well as the 25.4’s at 75 and 100 yds. Never tried the 380 barrel because I figured they would be to slow. 

I was waiting for more .25 slug liners to come in and I’m going to try one out. Maybe I’ll revisit the 34gr in both stock pellets liners and see.


 
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Thanks guys for the information and video.

That looks exactly how I remember it when I took the shroud off a few months ago.

I love the 380mm barrel, but the 700mm is a stinkin' broomstick and too long for my need, that's why I'm trying to locate a 600mm as I have a standard Crown .25 cal with the 600mm and it's perfect for my need.

I did put some light weight plastic tubing over the barrel between the spacers to hold them in place when I had it apart, works great!

mike
 
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