Testing Slugs with FX Impact X – Different Liners

Forums Pellets, Projectiles, Slugs, & Ammo Testing Slugs with FX Impact X – Different Liners

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    edosan
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    thanks @grin_reaver since no one is saying anything, for a while I was about to "forget" this post, not adding more info.

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    13brv3
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    I finally made an extension to try the 700mm liner in my 600mm barrel, and while not pretty, it seems like it should be functional.  Unfortunately, I discovered a potential problem with the idea.  After assembling everything, I remembered that I hadn't cleaned the new 700mm liner, so I unscrewed the shroud, and found that the extension came unscrewed from the barrel, and stayed inside the shroud.  I can't see an easy way to get to it, so I put some blue threadlock on the barrel threads, and screwed it all back together.  With any luck, tomorrow the extension will stay on the barrel when I remove the shroud.  We'll see. 

    Cheers,

    Rusty

     

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    edosan
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    Hey Rusty, been there done that. It really happens for not screw tight the double threaded part or loctite the extension. Anyway did the same than you and works. Is explained in one of my threads.

    And the extension I made, still work like a charm (best thing I did) 

    • This reply was modified 6 months ago by edosan.
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    13brv3
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    Good to hear.  I just didn't think it through when I originally assembled it.  I'll make another attempt at the extension at some point, to see if I can get one just a little straighter.  BTW, your drawing helped a lot.  Thanks.

    Rusty

     

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    AirSupply
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    Edosan Love the idea of the extension also. I thought if you have no intention of going back to the 600mm barrel you could make up a 700mm tube and    replace the original with it. So you have no joint You would still only need to tread it either end. If your swapping occasionally then it’s a no go  

    Thought I’d give that a go and for a different look I’d try it in stainless  Found this tube on ebay 14mm od 2mm thick  It is thicker and heavier than the original but that may have some advantages  I’ll post some pictures when it’s finished  

     

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    edosan
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    @13brv3 glad it helped! it can be improved for sure, using steel help for making the id wider. That will make the liner float, with the extension I made the liner is slightly touching the right wall making shooting to the left, windage compensation make it ok, but better is if not touching anything. 

    Hi @airsupply 

    Yep that is a good choice too! for us that know how that goes is easy, but use heat and unscrew the lower part is something that might be complicated for most. Easier is just to remove the shroud and add the extension, loctite and done, more "plug and play". Totally agree with you tho, replacing the whole barrel sleeve/tube is a better choice, and is cheap too. 

    Last week I went second in the second date of Chile National BenchRest on 50m and 75m (yes 2 podiums), point is, in 50m I use my old X with the extension! (crappy extension! make me come second… LoL :D )  probably using your idea I would come 1st! ;)  (seriously what I meant is the extension work like it suppose ) 

    • This reply was modified 6 months ago by edosan.
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    13brv3
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    Congrats on the great shooting! 

    Sadly, my extension is still stuck.  I put more blue thread lock on it early this morning, and that didn't hold.  I put even more on it now, and I'll try it again tomorrow.  After that, I guess I'll have to use red thread lock, or maybe epoxy.   If I ever get this thing off, and if I make any others, I will cut a screwdriver slot in the barrel end of the extension so I can stick a screwdriver in there and unscrew it if it ever gets stuck again.  

    Rusty

     

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    edosan
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    Thanks Rusty!

    Do not remember the one I use, but it was impossible to hand unscrew…after that I torch it and easy unscrew, not a problem.

     

     

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    13brv3
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    OK, so the 3rd try with thread lock was successful, and I'll be careful not to screw the shroud on very tight until I take the extension off and cut a screwdriver slot.  I went ahead and put the 700mm liner in, and did a very brief test with NSA 30gr .217 slugs, and JSB 25.36 monster redesigned pellets.  At first glance (without trying any different settings), I can't see any significant improvement over the 600mm liner results.  I'm getting about an inch groups at 70 yds.  It was interesting to note that the JSB was nearly all left to right, where the NSA slugs were spread evenly up/down and left/right.  There was some wind, but not much.  I didn't have time to chrono them, but I'm sure they're flying a bit faster. 

    Now a sanity check request.  If you have a 600mm barrel with the stock FX suppressor, can you measure the suppressor for me?  I swear I remember taking off one or two sections of this to make it fit the case, but now I can't find any extra sections.  Mine is 125mm, made up of 3 segments.  The center part is about 75mm, and the end caps are 25mm each.  I'm nearly certain there was one or two more sections, but I can't imagine where they would be hiding.  

    Thanks,

    Rusty

     

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    edosan
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    you need to remove the moderator in 700mm to fit the case.

    Moderator is a 3 part 👌

    • This reply was modified 6 months ago by edosan.
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    13brv3
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    Thanks for the confirmation.  I guess I can quit looking for the other parts, and schedule that brain scan I seem to need 🙂

    Rusty

     

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    BiggRedd
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    Sorry to respond to an old post, but I can vouch for groups like the one's Edosan has gotten with the pellet liner as shown in your picture. I tested the 22.5 VKs when DRig brought them out. I have had nothing but success with those from the pellet liner. The pellet liner for me is much more accurate shooting thr lighter slugs than the slug liner. My slug liner is 1:15.5 twist.  Too fast for the 22.5 grain. Twist rate for lighter slugs performed better with a slower twist rate. With the slug liner, my shots you'd see drift right with no wind, which I attributed this to the twist rate. The pellet liner on the other hand had a nice vertical trajectory downrange. In .22 cal, I'll be using heavier slugs with the slug liner. Lighter one's I'll stick with the pellet liner. 

    I really enjoyed all of you guy's post.

    Very nice stuff Edosan, Heavy, all you fella's!

    • This reply was modified 5 months ago by BiggRedd.
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    edosan
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    Hi BiggRedd, nothing to be sorry about and thanks for your testings… is quite interesting … and a match on mines. BTW Nice Rigg!

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    BiggRedd
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    @edosan thanks for the kind words on the rig. She's my baby haha…I can shoot the vk 22.5s at 1046fps with es of 4. At 50 yds I get 1/4 to 3/8" groups and sub moa at 100 yards when I tune it down to 985fps. Varmint Knocker are pure lead and get through thr choke a lot easier in my opinion and I prefer pure lead anyway so I lucked out . 

    YouTube it up!  West Coast Airgunner – Bigg Redd on YouTube here!

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