I haven't really seen single shot trays commonly for sale, but I have a 3D printer and already made my own
Rusty
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Early Impact .22 slug liner report
- Thread starter 13brv3
- Start date
I haven't really seen single shot trays commonly for sale, but I have a 3D printer and already made my own
Rusty
So the.25 slugs may have a better bc than the.22 slugs but isn't as practical since it cannot fit in the.25 magazine? If this is true then I think the.22 slugs will be the best way to go for the majority of people.
As far as springs that can retain more energy I think we should all be looking into this as higher velocity means flatter trajectory. I heard no matter how fast we are sending these slugs they stay stable and accurate!
We should look towards a professional company that can build us custom springs such as this one:
https://www.springsfast.com/compression-springs.php
One thing worries me though and it is what Matt said about precision versus accuracy. I think good groups and superior bc should go hand in hand. I think many of us would rather have very tight groups at 100 yards than high bc. Can we get both from the slug liners?
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For anyone who has an FX slug liner, I don't recommend stocking up on the H&N Piledrivers. There seems to be a lot of difference in feel from one to the next when loading them using the charging handle. Some slide right in, and some require an extra push to get them to go in the barrel. That gives me the impression that they're not very consistent in manufacture.
They're clearly not stable in my barrel. Shooting at 50 yds hit all round in about a 5" area. Shooting at 100 yds was a complete bust. I usually find the 100 yard hold using 8" steel plates before moving to paper. I bet I shot 25 of them at that plate, and never once hit it. Behind the plate is a leaf covered bank, so it's easy to see where they hit. I'd estimate about a 2 foot group
I shot a few of the NSA 30gr, and the 28gr boat tails. Those were about the same as before. The continuing surprise is how well the JSB pellets shoot from the slug liner. Ernest had mentioned shooting the 18gr JSBs at 1120 fps, which is way faster than I can shoot them, but he said they're amazingly stable. I shot some of the 15gr JSBs and they might have been even better. I shot one group of 5 each of the JSBs at 100 yds, and both were under an inch. Who knows how well they could shoot for someone who isn't a shaky old man who drinks too much coffee
One day I'll have to test the difference when there's wind. I'm working on a 70 yd shooting range at home, so that will make most testing more convenient.
Rusty (USPS still holding my Huma reg hostage)
They're clearly not stable in my barrel. Shooting at 50 yds hit all round in about a 5" area. Shooting at 100 yds was a complete bust. I usually find the 100 yard hold using 8" steel plates before moving to paper. I bet I shot 25 of them at that plate, and never once hit it. Behind the plate is a leaf covered bank, so it's easy to see where they hit. I'd estimate about a 2 foot group
I shot a few of the NSA 30gr, and the 28gr boat tails. Those were about the same as before. The continuing surprise is how well the JSB pellets shoot from the slug liner. Ernest had mentioned shooting the 18gr JSBs at 1120 fps, which is way faster than I can shoot them, but he said they're amazingly stable. I shot some of the 15gr JSBs and they might have been even better. I shot one group of 5 each of the JSBs at 100 yds, and both were under an inch. Who knows how well they could shoot for someone who isn't a shaky old man who drinks too much coffee
One day I'll have to test the difference when there's wind. I'm working on a 70 yd shooting range at home, so that will make most testing more convenient.
Rusty (USPS still holding my Huma reg hostage)
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For anyone who has an FX slug liner, I don't recommend stocking up on the H&N Piledrivers. There seems to be a lot of difference in feel from one to the next when loading them using the charging handle. Some slide right in, and some require an extra push to get them to go in the barrel. That gives me the impression that they're not very consistent in manufacture.
They're clearly not stable in my barrel. Shooting at 50 yds hit all round in about a 5" area. Shooting at 100 yds was a complete bust. I usually find the 100 yard hold using 8" steel plates before moving to paper. I bet I shot 25 of them at that plate, and never once hit it. Behind the plate is a leaf covered bank, so it's easy to see where they hit. I'd estimate about a 2 foot group
I shot a few of the NSA 30gr, and the 28gr boat tails. Those were about the same as before. The continuing surprise is how well the JSB pellets shoot from the slug liner. Ernest had mentioned shooting the 18gr JSBs at 1120 fps, which is way faster than I can shoot them, but he said they're amazingly stable. I shot some of the 15gr JSBs and they might have been even better. I shot one group of 5 each of the JSBs at 100 yds, and both were under an inch. Who knows how well they could shoot for someone who isn't a shaky old man who drinks too much coffee
One day I'll have to test the difference when there's wind. I'm working on a 70 yd shooting range at home, so that will make most testing more convenient.
Rusty (USPS still holding my Huma reg hostage)
Thanks for the update. I’m getting a 600mm .22 cal STX barrel from a trade so your results are very valuable when I start shooting slugs.
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They fit, but don't quite function. It's close to working, but they get hung up when the spring tries to rotate the center of the mag.
SideShot eventually replied to my inquiry about the max length of pellets/slugs, but all they said was that they thought it was slightly larger than the stock mag. They said they'd measure it, and let me know the next day, which was a week ago at least. I know Matt said he damaged one of his mags trying to make it work with larger slugs, but I can't recall if he said which slugs he was trying to use with it. In another video, he mentioned shooting 26gr NSA, which would be a special order. I'm not sure if he has a preference for that weight, or just trying to find one that works in the mags.
I did finally get my Huma reg (USPS delay not Huma), and installed it yesterday. It's holding 150 bar since yesterday, so all good for the installation. I have to agree with others who said the adjustment screw should be hex, not flat blade.
Rusty
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Any updates on group testing for those with the slug liners? I am curious if any of you guys can get a 5 shot @ 1 moa. Perhaps 2.5 MOA is what we should expect from the projectiles+liner? I have mine preordered along-side a .22 barrel.
I am conflicted on Matt's comment during the youtube Q&A session about how groups size is less important than the general area where the pellet will land. I just personally feel that having a tight group size is much more preferred than less projectile drop/drag. Also, does BC matter that much? I see the mildot holdover on chairgun barely change from a .0520 bc(.30 jsbs) to .830(slugs). Perhaps I need to change projectile type?
Let me know. Would you guys be willing to sacrifice precision for accuracy?
I am conflicted on Matt's comment during the youtube Q&A session about how groups size is less important than the general area where the pellet will land. I just personally feel that having a tight group size is much more preferred than less projectile drop/drag. Also, does BC matter that much? I see the mildot holdover on chairgun barely change from a .0520 bc(.30 jsbs) to .830(slugs). Perhaps I need to change projectile type?
Let me know. Would you guys be willing to sacrifice precision for accuracy?
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I've found that the H&N piledrivers are really dirty. They have a lot of casting bits on each pellet. That may be the reason they are shooting inconsistently? I've been too lazy to take my Impact out for any good testing. I haven't even ordered any NSA's.
Matt seems to really like the 23 gr. I would lean towards the BT because of the longer pellet.
Here is the singly shot tray I use.
https://www.youtube.com/watch?v=2kPpZefrzEk
He makes a left handed tray that actually hold a longer pellet.
Which NSA Pellets do you recommend for the slug liner?
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I'm afraid I haven't done much shooting with the slug liner in the last couple weeks. I did manage to build a shed/shooting house, which gives me 73 yards to shoot at home, so I'll be running out of excuses for not doing more testing.
I spent time last week installing the new "extra high pressure" Huma reg in an attempt to get more speed out of the heavier slugs. As expected, it didn't add all that much due to a lack of hammer power. I'm working on that next.
So far, my best groups from the slugs have been with the 30gr NSA, though I wish it was with the 28 gr boat tails. I'm hoping to get enough power to shoot both of those in the near supersonic range, say 1050 fps, then see what they'll really do. Amazingly, the performance of the 15 and 18 gr JSB pellets with the slug liner is still the biggest surprise. They've been better than any slug so far, even at 100 yds. I haven't had a chance to compare bullet drop, or wind performance.
As for single shot mags, those are nice, and I saw them previously. I may eventually try to make something like that, but my 3D drawing skills are not the best, so I stick with a much simpler design. 3D printing is OK, but I'll likely try to mill some from Delrin once I get my new CNC mill up and running. I expect that to be making some Impact parts as well, since you can't seem to buy high performance parts. Sadly, all of this is probably 6-8 weeks out.
Rusty
I spent time last week installing the new "extra high pressure" Huma reg in an attempt to get more speed out of the heavier slugs. As expected, it didn't add all that much due to a lack of hammer power. I'm working on that next.
So far, my best groups from the slugs have been with the 30gr NSA, though I wish it was with the 28 gr boat tails. I'm hoping to get enough power to shoot both of those in the near supersonic range, say 1050 fps, then see what they'll really do. Amazingly, the performance of the 15 and 18 gr JSB pellets with the slug liner is still the biggest surprise. They've been better than any slug so far, even at 100 yds. I haven't had a chance to compare bullet drop, or wind performance.
As for single shot mags, those are nice, and I saw them previously. I may eventually try to make something like that, but my 3D drawing skills are not the best, so I stick with a much simpler design. 3D printing is OK, but I'll likely try to mill some from Delrin once I get my new CNC mill up and running. I expect that to be making some Impact parts as well, since you can't seem to buy high performance parts. Sadly, all of this is probably 6-8 weeks out.
Rusty
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Here is a picture from a member here on the AGN shooting with the
FX Slug barrel , he and another person have been testing my slugs
for the last few weeks and are starting to see some good results .
Shots are at 50 yards using the Swage 22.5 grain hollow point slugs .
Once again I did not shoot this group a customer did .
FX Slug barrel , he and another person have been testing my slugs
for the last few weeks and are starting to see some good results .
Shots are at 50 yards using the Swage 22.5 grain hollow point slugs .
Once again I did not shoot this group a customer did .
Upvote 0
Here is a picture from a member here on the AGN shooting with the
FX Slug barrel , he and another person have been testing my slugs
for the last few weeks and are starting to see some good results .
Shots are at 50 yards using the Swage 22.5 grain hollow point slugs .
Once again I did not shoot this group a customer did .
Wow those are pretty good results. However, i am just curious on the air efficiency at 170 bar. Would we thus be getting worst shot count than a .30 cal @ 145 bar? It seems to be a lot to sacrifice.
Another good test is comparing the stock .22 x barrel liner and x barrel liner with the jsbs 18.1. Theres a good chance that the slug liner is actually an upgraded liner for both pellets and slugs. Meaning the slug liner is a must have when switching to the .22 caliber barrel
Also curious now on how they fair with the jsb monsters， monsters redesigned, and beasts. Good to see the number of things to do with the slug liners.
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I've been playing with the LabRadar unit, and it's been pretty interesting. First observation is that there can be a lot of variation in the speeds of the projectiles. I haven't completely understood it yet, but if you shoot 5 shots in dead calm conditions, sometimes a shot will start out slower, and stay slower. Other times it might be the fastest out of the barrel and then end up being the slowest at 70 yards. Amazingly, the JSB 18 pellets are REALLY consistent compared to anything else I've tested, which I assume is why they group so well. The NSA 30 gr slugs are next, and the 28 gr boat tails are the worst. The 28BT has been the biggest disappointment so far.
This shows an average shot for the JSB 18, NSA 28BT, and NSA 30. The 28BT is supposed to have the best BC, but not according to this. The 30 gr NSA blows it away. Now if I could just get the 30 gr to shoot faster... The forum seems to have made this unreadable- Green is JSB 18, Blue is NSA 28BT, and red is NSA 30.
These show how consistent (or not) they seem to be.
The NSA 30 grain is the winner so far in slugs, and I just have to get them shooting faster. The JSB 18 pellets continue to amaze though.
Rusty
This shows an average shot for the JSB 18, NSA 28BT, and NSA 30. The 28BT is supposed to have the best BC, but not according to this. The 30 gr NSA blows it away. Now if I could just get the 30 gr to shoot faster... The forum seems to have made this unreadable- Green is JSB 18, Blue is NSA 28BT, and red is NSA 30.
These show how consistent (or not) they seem to be.
The NSA 30 grain is the winner so far in slugs, and I just have to get them shooting faster. The JSB 18 pellets continue to amaze though.
Rusty
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Rusty,
Have you looked at the SNR (signal to noise ratio) on the Labar excel file? This might give you some insight as to why some of your results aren't consistent. What I have found on mine is that sometimes if one of the down range velocities doesn't seem right compared to the other results that the SNR is usually weak and not locking onto the projectile very well.
Have you looked at the SNR (signal to noise ratio) on the Labar excel file? This might give you some insight as to why some of your results aren't consistent. What I have found on mine is that sometimes if one of the down range velocities doesn't seem right compared to the other results that the SNR is usually weak and not locking onto the projectile very well.
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I did look at the SNRs, and they are typically lower, and less consistent when the velocity becomes inconsistent. I also put my ProChrono at 70 yards to verify that the inconsistent readings from the LabRadar are correct. The only conclusion I can come to is that the projectiles are not equally stable.
There also seems to be a direct correlation between the consistency of the downrange readings and the ability to hold a group. The speed of the JSB 18 pellets is solid, and they're also the best grouping by far. The NSA 30's group better than the NSA 28BT, and that follows the speed readings as well. I need one of those fancy high speed cameras to try to see what the projectiles are doing.
One big caveat here is that I only have one barrel, so everything I'm seeing may be barrel dependent. I would hope that's not the case, but it's a variable I can't test.
Cheers,
Rusty
There also seems to be a direct correlation between the consistency of the downrange readings and the ability to hold a group. The speed of the JSB 18 pellets is solid, and they're also the best grouping by far. The NSA 30's group better than the NSA 28BT, and that follows the speed readings as well. I need one of those fancy high speed cameras to try to see what the projectiles are doing.
One big caveat here is that I only have one barrel, so everything I'm seeing may be barrel dependent. I would hope that's not the case, but it's a variable I can't test.
Cheers,
Rusty
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I haven't made any mod other than the higher pressure Huma reg. Mods are coming though.
Rusty
Rusty
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The 28gr BT fit into the .25 mags just barely, i use my .25 mags for both calibers. Interesting thread, ive had good results with the 23 and 27 and not bad with the 28gr BT from a unchoked lw poly. I hope the slug liners work out.
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I'm hoping for good results with the 19gr slugs. I should be able to get them to 930fps out of my 500mm barrel. If they aren't accurate enough for me, I'll try the 21gr slugs......but I will be topped out at 895fps with my short barrel.
Going to shoot them in my Crown.
Going to shoot them in my Crown.
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