Slug A Liner vs heavy superior

I have the slug A and decided I needed the heavy superior. Installed it and I didn’t think it shot as good, so I put the A liner back in. Last week got to thinking I didn’t give it enough time so I reinstalled it and gave it some time and same results. It was acceptable for what I do which is pesting, but it likes to throw flyers which the A doesn’t. I’m shooting .22 knockouts. Now I’m thinking I should have gotten just the superior and not the heavy. For now I will stick with the A liner. 
 
In my experience in 22 and 25, the superior standard outperformed every liner I have tried before with slugs and pellets. In 22 I tried h&n 217 25, 27 and 30gr, nielsen's 27.5 218, JSB KO 216 and 217 patch number 755 came prelubed. All of them can group submoa easily @100 yards. I have tried them in slug liner, heavy liner and standard superior. Slug A when you find a slug that it likes it perform very well, superior heavy seems good with most slugs but not great. Standard is king, you barely find a slug that it doesn't shoot so good with it. 25 cal I have tried nielsen's 33.5 and king heavies. Same story but slug A is more accurate than superior heavy with both 33.5 and heavies. Standard is more accurate with 33.5 nsa but slightly less accurate with heavies compared to slug A.
 
I'll be able to do testing in this area as well. I just did a custom carbon sleeve on my superior liner. Just picked up a Slug A liner that is on its way in the mail, and also have the superior heavy. All in .25 cal. I also have Ernest Rowe dual transfer port in route as well. I hand cast my ammo. so testing and changes are easy to make. I have the a few NOE molds. the .249-39-rf slug, the .250-41-bk boat tail mold. the Hunter and Magnum pellet molds. Thus far the gauntlet that I put a lot of work and mods into like the .249 slug mold and the hunter pellets at 27.2 gr. my Airforce condor likes the 29.2 grain hunter pellets. the impact likes the 29.2 gr hunters, the NSA 26.8 gr the JSB knockouts do ok.

still trying to get the boat tails running well in one of them. Now that I have the ability to size my ammo I can do more testing to see if I can get the boat tails running well. none have liked the magnum pellets as of yet as well.

I have not completed the custom carbon sleeve for the heavy liner yet. 
 
I was very disappointed with the Superior Heavy in .22 until I remove the choke, lapped and polished the bore. It is now Steller, but only with my custom NOE cc1 mold. I say custom as it did not shoot well in the Heavy until I moved the center of gravity rearward in the slug by HP'ing. It is now a laser with that slug. 

I would love to try a Slug liner "A" next. 

the most important thin I have found with the FX liner is not to size the slug more than .0003 over groove. or most barrels for that matter. I tested slugs at .0007 over and they were markedly less accurate. So much for shoot precision our to the box. Always slug your barrel and size any slug to the barrel. Not just what any give vendor offers. 

If you are really wanting top precision accuracy, the slug has to perfectly match the bore/groove and leade. Period!

this goes for any brand barrel. PB barrels are in general an easier start as they are designed for slugs form the get go. Just the twist has to match the length of the slug. TJ's is a great go to for this. Their pb liners are a perfect match. 

My TJ's barreled Talon/Dor will shoot within 3/8" at 80 yards all day long with the 84 gran slug at 170+ fpe. Sadly, I lost most of my pics in a computer crash. GRRRRR!!!

Pic of the mold and before and after choke removal and hp'ing the slugs. 
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Before it was a fine shotgun. LOL

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Pic #1 shotgun. Pic #2 Choke removed. Pic #3, Mold hp's for weight bias. First two pic's at 40 or 50 yards. Last pic, 80 yards. One shot to settle the reg., and 10 on target. Seems accurate to me. LOL ;<) But NOT out of the Box. Cherry picked? Yep, but not uncommon at all. 



Knifemaker
 
QBall, now for the rest of the story. the target is NOT the FX barrel. It is a target shot with a cf wrapped Brownell's 1-20 twist. Conventionalwisdon says it wont work. Well, it does, however after 100 yards it shows s bit of tail wagging. 



The Brownell's liner does shot this well, in .223.4" lands. However, it also likes to throw the fliers far too often. The .2183 FX Heavy shoots just as well, Does not seem to know how to throw a flier and the arc of the slug stays nice and stable. 



Oddly, the 1-16 twist Brownell's liner doesn't want to shoot my slugs well. Odd, as it is much closet to the twist of the FX. Very odd, but it is the way the days of testing went. 



I am a firm believe in the FX liners, however, the choke, especially the very tight .005" choke is insane. It has NO place on a slug dedicated bbl. I don't know wow Matt D. came to the conclusion that it was more accurate with a tight choke, as a lot of slugs shooters have discovered over the years that it is exactly the wrong way to go. All I can imagine is that it is designed to shoot the hollow bodied Fx Slugs which would have a lot more easily compressed walls than a solid slut.

I wrote FX of my findings as I received the barrel before the public had access to them. No one at FX has ever replied. It was FX USA that was supposedly going to respond, but nada. GRRRRR!!!! 



Knife 
 
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forgot to mention that the pictured slug that is shooting so well in the removed choke superior heavy is 35 grs. the Raptor can push it from 800 to well over a grand. It shoots well at 1040's down to 890's. The pic group was at 930's. (My little home range). Night and day. It is so quiet when shooting that the deer don't bother to stop eating. LOL :<)

Knife