Correct. Except, the "superior heavy" is the "heavy" liner 1:18.. FX also seemingly released an updated stx slug A. Which I have. I will send you a picture of the part number when I get home.
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FX FX IMPACT M4 barrel liners 700mm
- Thread starter Irish shooter
- Start date
This is the liner that I is in my M3 and my DRS Pro came with the same liner.
I'm not sure why FX is calling them the slug liner A as that was their original slug liner they came out with before the Superior liners.
Sorry I can't post a picture
The liner has
FX STX Slug. 25 TR 1:16 Art no:20659 700mm PID 22897
on the liner.
My original slug liner A has a piece of shrink tube that says Slug A on it.
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Exactly this part no. But I think the colloquial use of "slug a" is because it's the same exact twist rate and as this post stands as proof. It's confusing to many.
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Heavy liner is 1:18. They updated the liners some time ago and the new “slug liner” (not slug A) is 1:16. They probably confused the old “Slug A” with the current “slug” liner. So to be clear, the current liners are STX with 1:24, Heavy with 1:18 and Slug with 1:16.
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I have both 1/16 and 1/18 .25 600 mm
The 1/18 out shoots the 1/16 by far in fact just sold that liner.
Now 700mm 1/16 shoots better than the 1/18 go figure
I'm also shoting 30-32g AeA slugs and 32g H&Ns 950-980
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I think it depends on weight. Beyond 33gr 1:16 will probably outshoot 1:18 no matter what. At least statistically, meaning not taking into account FX liner lottery. Below 33gr it’s a 50/50 and depending on liner luck IMHO.
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I was just typing a response. You hit on a point
Aside from "getting a good one". There are so many minor variables that can change the experience. I think I got considerably lucky. HN, Zan, Varmint knockers, heavy mk2, hades are all absolute lasers from it stx slug liner. Other slugs it shoots like absolute manure. Some very popular slugs. I really wish fx would make liners tailored to different bore sizes. In .25 I can not get any accuracy at all unless it's a definite .250" for my situation the lighter NSA offerings would've been ideal but all the short 26-29.5 are in .249 and fly like absolute crap.
The liner lock tightness, how you got to your velocity, harmonics.. all impact the barrels capabilities.i found that 1:16 handled a wider variety than "heavy' liner. . Always assume the caveat "that's just my experience" comes with my statements unless I offer a direct challenge or refutation.
Personally I do like what .25 offers in energy. But I do regret that I didn't choose a .22.
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It’s funny, the slugs you list are the ones my 1:16 loves as well. HN HP II, VK, Zan 33, HN being the one true love. Also doing ok with NSA 29 and 33/34. The AEA 30.2 are crazy accurate up to 50y and fall completely apart after that for me. Maybe I’ll have to play with speed a bit more for these. In terms of pellets it lasers AEA 25 and 33 as well as hades. MK II not so much. Funny how individual this crap is.
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Zan 30 (prefers old type but new is good as well)
But H&N HP1 30 are the absolute best performer. Hands down it's one hole every time. Even slow. 890 and it doesn't matter distance. I point. I shoot. "THWAP". EVERY single time. HP 2 perform as well as zan 30s if I go 2 grains lighter it falls apart completely. HP1 .250 30, old zan .250 30 , hp2 .250 30, new ZAN 30 in order of performance. All of them are 1.2min or better. But hp1 shoot pellet accurate. VK 34s too group very well also.
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Can someone weigh the assembled 700mm ready to install with the sleeve and all parts? I'm curious as the the weight savings over a full diameter single piece barrel like a TJ in .22 or .25. Heck even a .30 if possible.
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Switching over to the 700mm 1/16 i noticed that I have to shoot 2-3g heavier slugs.
As stared 30g aea are real accurate but i went to the 32g at 75yds nickel size groups
H&N 32g same thing 3rd was the Jsb ko33g all .250
I also noticed 600vs 700 you don't need to send at 980
920-930 seems to be the sweet spot.
1/16 in 700mm .25 definitely more accurate than the 1/18.
But in 600mm my 1/18 is better than the 1/16 go figure
As stared 30g aea are real accurate but i went to the 32g at 75yds nickel size groups
H&N 32g same thing 3rd was the Jsb ko33g all .250
I also noticed 600vs 700 you don't need to send at 980
920-930 seems to be the sweet spot.
1/16 in 700mm .25 definitely more accurate than the 1/18.
But in 600mm my 1/18 is better than the 1/16 go figure
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I should have taken a picture of mine before I left the shop. In Ireland, I have to add this to the FAC before I can leave the shop. given the time of year I suspect it could be 5 weeks before I get it back.
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I forget AGN is worldwide.
WOW that's a long wait !
I think you will be happy with it when you get it !
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Ahh yes, because the liner turns it from a toy into a lethal killing machine! Same length. Different twist. Everyone knows the projectile spinning a full rotation 33% faster adds 666% more lethality. I'm sorry you must deal with such insane bureaucracy.
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5 weeks is waiting on the variation on my fire arms licence. Normally 3-4 weeks but with Christmas period round the corner it will be longer.
The liner is in the shop I have already bought it just not allowed it until the barrel is added to my licence
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Yeah I know that just being a PIA. I live in a state that is just a few steps removed from jackassary.
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