Choke in fx .22 barrels

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DesertSilver said:
I was trying to checking the groove diameter of the.22 superior heavy barrel and found it has a pretty tight choke. 😡😡 I wanted this barrel to shoot my noe 30gr bbt slugs out of it. Are all of the.22 fx barrels choked?
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I just cleaned a new one tonight, and didn’t expect as much choke as a standard… I was wrong, tight choke. Bummer
 
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It might be worth reading this before you throw your FX superior heavy liners out:

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DesertSilver said:
Well, I guess I won't be buying another fx barrel. Glad I found out that info. Looks like LW is in my future and have someone set it up to fit. Main reason I bought the rifle was to shoot slugs. I've got other rifles to shoot pellets.
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I’m guessing they have a huge amount of testing in these liner. While I’ve read from both sides of the aisle…..imo fx has thus far built the most fool proof means of shooting slugs. And they use chokes. Not saying it’s the only way or the best way. But right now…it’s my first chose for a slugs barrel. Yeah I’ve tried LW no choke too
 
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corny said:
The issue being…the whole slug industry has been tailored around choked barrels.

Unless you making ur own slugs, getting a properly sized slugs for no choke .22 barrels will be a problem.
Common sizes generally max out around .218”
If you look at LW no choke groove dia is .221”
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That there is the problem. I do cast my own slugs and that's why I needed to know the groove diameter so I can size to it. The slug I tried to push through was sized down to.215 and I couldn't push it past the choke. This is the slug I want to shoot. Pure lead.

Screenshot_20230520-084123.png
 
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I remember watching a video about the FX slug liners and the development of them. They tried the no choke design and it did not work.
Maybe it has to do with the way they rifle the barrels but it was said that they did add choke to the barrels but that it was different from the choke in the standard liner.
You can love or hate FX, but they got out ahead on shooting slugs from air guns and have pushed the idea hard. Maybe some day another maker will build a better mouse trap but until then, for my money FX remains the easiest path to accurate slug shooting
 
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jps2486 said:
Yes, FX barrels are tightly choked. My .22 prefers slugs no larger than 0.217 and sometimes 0.216 or 0.2165 depending on the manufacturer. You may even have to polish the barrel with JB Bore Paste eliminate any microscopic burrs.
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I ordered a few boxes of NSA .217 slugs for my Maverick with the standard liner because the .217 FX Hybreds fit my barrel with a little resistance . But the NSAs chamber too easy and I'm sure it's affecting accuracy. If I try them again it will be .2175 .

My Taipan w CZ barrel likes .216 . I'm glad they have a variety of diameters.
 
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I don't shoot slugs, and have no plans for it. But for many years I cast bullets for rifle and pistol. Based on that experience, and the profile I see in most air rifle barrels, I think there ain't no way air rifles are going to shoot slugs really well, until barrels are produced to accommodate the relatively long bearing surface of the slug, and its weight and profile. From a ballistic perspective, the difference between a pellet and a typical slug is very significant. I may be wrong, my wife would guarantee it, but just my opinion.
 
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elh0102 said:
I don't shoot slugs, and have no plans for it. But for many years I cast bullets for rifle and pistol. Based on that experience, and the profile I see in most air rifle barrels, I think there ain't no way air rifles are going to shoot slugs really well, until barrels are produced to accommodate the relatively long bearing surface of the slug, and its weight and profile. From a ballistic perspective, the difference between a pellet and a typical slug is very significant. I may be wrong, my wife would guarantee it, but just my opinion.
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Perhaps your wife noticed that the winner of the AOA Extreme Field Target EBR Long Range Challenge was shooting slugs from a stock FX Panthera and obtained a perfect score.
 
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weevil said:
Perhaps your wife noticed that the winner of the AOA Extreme Field Target EBR Long Range Challenge was shooting slugs from a stock FX Panthera and obtained a perfect score.
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I've never seen one of those barrels, so I can't comment. The traditional air rifle pellet barrels have more, and very shallow groves compared to a traditional rifle barrel. On average, I don't think that those barrels work well for heavier slugs with a long bearing surface. I'm sure that the hunt is on for a hybrid barrel that does well with both.
 
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