FX DRS - .22 with 500mm Superior STX barrel liner. can i shoot hybrid slugs?

HI, can i shoot FX hybrid slugs with the DRS 500mm .22 with Superior STX barrel liner?
I don't know what the Drs valve can achieve for power but I can tell you my buddies maverick with 500mm can push 23 grain javelin slugs at 980 fps with reasonable efficiency and noise limits. Hybrids aren't the fastest or most accurate from either of our guns but they do have a very unique terminal performance. Pellet fx liners shoot all but upper mid-heavier slugs quite nicely.

The slug liners won't shoot pellets too well ime other than monster redesigns and their sister hades pellets.

He's got 500mm and I have 700mm and we shoot 23 at the same speed, Mines ONLY more air efficient.
 
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I've been wrapping my head around hybrids and why they're slow. My best estimation is theyre probably pure lead to be soft for terminal results and manufacture , and have a massive bearing surface. Would you agree on either?
I’ve never had a problem with them being slow compared to another slug by a margin that caused concern. But in my DRS, they shot pretty good at 805fps. When I turned the reg up to around 140b, I got 865fps and a horrible shooting gun. Because the gun became a blast cannon from pushing it I started playing with different mods to see if I could clean things up and tighten groups. Then I came to my senses and remembered it was a good pellet gun. So I adjusted back to its Hades setting and eventually sold it.
 
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