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Smooth twist x liner vs superior.

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Ted did some testing awhile back and he found that the Superior liners shoot a wider variety of ammo a bit better than the Standard STX liners did.

I have found the same in my testing but it also seems that the Superiors like the pellets and slugs shot at a bit higher speed as well.

As far as upgrading if you are shooting well now there is no reason to do so unless you want to shoot a wider variety of lead.

EDIT;

Just an added thought my .25 700mm Slug A shot the JSB Heavies, NSA 33.5, 36, 36.2 and VK 34gr at less than MOA at 100 yards on the same tune. So, the Slug A can shoot other ammo very well.


 
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I jumped from STX-A to Superior Heavy with in mind that I will be swapping there and back. Soon realized that retuning is tiring. No dimmensional difference only a twist rate.

FX Liners - Twist Rates.1645125461.jpg


FX Superior liner - Twist Rates.1645125470.jpeg

 
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This seems to be the most current list of Twist Rates for the FX Liners. From the FX website.

Superior Liner Twist Rates

The Superior Liners set recent performance and innovation benchmarks for FX and the entire airgun industry. Superior Liners are fitted on all production model rifles and barrel kits. These liners are designed to shoot standard weight pellets, lightweight slugs from other manufactures, and Hybrid Slugs with maximum accuracy.

.177 Cal

300mm Length – 1:18
380mm Length – 1:18
500mm Length – 1:18
598mm Length – 1:18

.22 cal

300mm Length – 1:24
380mm Length – 1:24
500mm Length – 1:24
600mm Length – 1:24
700mm Length – 1:24

.25 cal

380mm Length – 1:24
500mm Length – 1:24
600mm Length – 1:24
700mm Length – 1:24

.30 cal

395mm Length – 1:22
500mm Length – 1:22
600mm Length – 1:22
700mm Length – 1:22

.35 cal

800mm Length – 1:25

Superior Heavy Liner Twist Rates

Superior Heavy Liners embodies a different twist rate better suited for heavier ammunition. Sold as a separate accessory and not as a barrel kit.

.22 cal

380mm Length – 1:16
500mm Length – 1:16
600mm Length – 1:16
700mm Length – 1:16

*Required for projectiles heavier than 23 gr.

.25 cal

500mm Length – 1:18
600mm Length – 1:18
700mm Length – 1:18

*Required for projectiles heavier than 34 gr.

.30 cal

500mm Length – 1:18
600mm Length – 1:18
700mm Length – 1:18

*Required for projectiles heavier than 50 gr.
 
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