Umarex Notos Accuracy

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mattboyer30

mattboyer30

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Oct 10, 2024
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Hi guys - I have a fairly OTB Notos I got a couple months back - I've only made a couple easy mods - Opened up the regulator 1/4 turn, polished the trigger mechanism (super smooth pull now) lowered its tension, and then drove in the hammer spring all the way in. Aside from cleaning with the patch worm and adding a picatinny barrel grip & bipod, not much else is modified. I'm dead nuts around 15-20 yds (My favorite perch is out the kitchen window, at about 20-30 degree angle down to a target setup at 15yds & a 4-panel of targets on plywood out right at 40 yds.) -
Anyhow - I've been tweaking cause i have issues with the 40+ yds grouping. Being dead center at 20, I go out to the 40yd, and first shot nearly always strays - but then I'll have the subsequent shots anywhere but bullseye. It's kind of random, too - around 4" apart from each other, some a bit high, some a bit low, and left or right. I can sometimes see the pellet pop out of the barrel and arc down to the target. I'd hoped by opening up the regulator and hammer spring i'd get more of a shot on a rope, but not the case. It did pretty well suck my air supply down too - I still get about 35 shots in from 3,500psi before it starts hitting red though. I'm shooting Diabolo 18gr pellets, which I read in this thread are the pick for accuracy - and don't think it's the pellet I'm chasing.
Is the gain I'd get from a mod drop block & plenum with an upsized canister enough to be considering as the culprit here? I've seen many posts with 50yds being no problem for guys - so hoping maybe it's just the pressure I need to push a little harder? I did clean the barrel a couple times so far, last time just a couple of days ago. If anyone has some thoughts on it, mods maybe even not requiring purchases I'd appreciate that a lot. Thanks a bunch!
 
mattboyer30 said:
Seeing it apart now I understand the "shroud" being what I'd be buying if I went for a 380 or 500 mm aftermarket. If so, I guess you wouldn't just swap out a shroud for a longer one without needing to get a longer liner (barrel), am I understanding that right?
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You are understanding it correctly but there's a bit more to it. The shroud is just to make it all look pretty. The pieces that sandwich the FX barrel liner in the steel tube (inside the shroud) are really what makes the kit more than just a longer shroud.
 
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Ah I'm beginning to understand all of that now. So, shroud, then inside of that is the barrel (liner) sleeve, then inside of that the actual liner. I'm having trouble finding liners that I know would fit the 380mm kit that's offered on ebay by c88machining - I think 500mm would be just too long for my purposes. I get that I wouldn't be able to reuse the Notos' stock barrel with a 380mm conversion? I'm curious about the slug barrel - is it more rifling inside than a typical pellet gun? If I could just find a place to browse actual liners (If I definitely need one) I could figure it out I'm sure. Thanks guys
 
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Utah Airguns should have all the liners, they are now the FX distributor in the US.
Other than twist rates, I don't know what the difference between their liners is. There is no slug liner in .22 AFAIK, you'd be looking for an STX Superior Heavy liner in 500mm and cut it down to fit the kit.
Firewalker cut and crowned my liner and then assembled the barrel kit for me.
 
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mattboyer30 said:
Ah thanks for that - So the Notos in question, is a liner necessary then if going with an aftermarket barrel, or only if you plan to use slugs? I asked the eBay guy about his barrel & said that the liner has to be purchased separately, but I didn't specify anything about slugs or pellets. I intend to get that plenum extension, assuming that the $30 extension is all I'd need to do the mod & not any additional parts or rings, etc... - Does say o-rings are included. And yes, I'm new to the forum but in just a few days have definitely gotten the answers to a lot of unknowns I had before.
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I guess you never heard of fx guns? Fx guns use what they called a liner. It is basically the barrel. They called it a liner cause it slides into a aluminum tube. The stock barrel on the notos is a standard barrel. The fx barrel kit from eBay seller that you are talking about. He sells you the aluminum tube. It has the same thickness as the notos barrel. So it goes into your gun like the stock barrel. But the kit doesn't have the actual barrel inside. That is why you need to buy the fx liner from fx. It's about $110. So basically you will need to buy the fx liner. Either 380mm or 500mm. Whatever barrel kit length from ebay you buy, you also have to buy the same length liner.

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ImpactX said:
I guess you never heard of fx guns? Fx guns use what they called a liner. It is basically the barrel. They called it a liner cause it slides into a aluminum tube. The stock barrel on the notos is a standard barrel. The fx barrel kit from eBay seller that you are talking about. He sells you the aluminum tube. It has the same thickness as the notos barrel. So it goes into your gun like the stock barrel. But the kit doesn't have the actual barrel inside. That is why you need to buy the fx liner from fx. It's about $110. So basically you will need to buy the fx liner. Either 380mm or 500mm. Whatever barrel kit length from ebay you buy, you also have to buy the same length liner.

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Okay I see now - I might just cancel that Terminador order then & opt for this and a 380mm shroud kit I'd mentioned earlier - winds up being about $120 cheaper that way - I don't know how much the "dampening rings" play a part, probably not worth $120 difference I'd guess. I appreciate your time and helping me understand this side of things with the detail. Once I get a good grip on the basics I can usually figure things out from there. More on this stuff is just simply where to find things, a lot of dealers I'd never heard of & not just easy Amazon finds. I'll get these mods in the works & pass along the updates - I'm sure I'll have more questions too. Thanks!
 
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mattboyer30 said:
Okay I see now - I might just cancel that Terminador order then & opt for this and a 380mm shroud kit I'd mentioned earlier - winds up being about $120 cheaper that way - I don't know how much the "dampening rings" play a part, probably not worth $120 difference I'd guess. I appreciate your time and helping me understand this side of things with the detail. Once I get a good grip on the basics I can usually figure things out from there. More on this stuff is just simply where to find things, a lot of dealers I'd never heard of & not just easy Amazon finds. I'll get these mods in the works & pass along the updates - I'm sure I'll have more questions too. Thanks!
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Ok so I did some math. The fx barrel kit from eBay is $130 + $10 shipping + tax $12. Then fx liner is $110 + $11 shipping + $10 tax. Total is about $283. Give or take. The notos guns alone is $197 + $15 shipping + $17 tax. $229 give or take. Ask yourself, is it really worth putting $283 into a $229 gun? Imo it's not worth it. You could of buy another notos and still have some money left over. I own a notos. It shoot accurate to 30 yards which is my backyard range. It's not a 100 yard plus gun and didn't buy for that purpose. But within 50 yards the notos shoots light out. So I wouldn't bother putting more money than the whole gun is worth into it. But that's just me.
 
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I completely agree with you in that respect - I was really in to the Krals for the first one, but then add on the compressor, etc... and was a bit more than I was wanting to spend. I do tend to have issues when it comes to toys, as many of us do LOL - But like @AmosBurton said, for me, it being my first capable airgun I really love the challenge of fixing problems & learning everything I can about things by doing myself before I get curious with an FX or something & screw up. I am learning there is a bit of skill involved when making any kinds of changes, having to be very careful & easy on things with all of the precision parts involved. But thank you for your insight & yes...it is a very logical point haha -
On scopes, I really like the capability of changing between a red dot for closer targets and scope for dialing in precision shots for testing accuracy - I don't see many "good" scopes out there as combos - but did kind of like the idea of the red dot + magnifier combo ... I just can't think how it'd be easy to compensate for longer/shorter outside of what the dot is dialed in for without a reticle being available too? I absolutely love how quick it is to get a shot on point with the red dot that's built on to the cheaper scope I got. Thoughts?
 
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@AmosBurton, I believe it was your post about a $40-ish barrel-mounted chrony - is that right? I've looked everywhere and the only one I really see is the Magneto for around $250. Seems an awesome option for the times I'm plinking from inside to out the window - I've found a few cool ones that are tripod mounted shooting through openings, but not the barrel-mounted. Sadly, the F-1 Chrony I have from back in the reloading days is RIP. No readings - and a pain to set up correctly inside a short span. Thoughts?
 
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I have a question on the eye relief on the Notos...BTW I did get the 380mm barrel & FX liner on & plenum extension - so far noticeable improvement! I get the buck rail suppressor today - it was a bit noisy for the back yard without one lol. - The eye relief- -So, the scope in my pic, I wound up having to use a second pic rail as a riser to A) elevate a little since the line of sight was pretty low for me when on the Notos rail...Second, I had to shift things further down he barrel or 15rd MPC mags wouldn't fit in the breach. So it kind of cantilevers as close as i could get to my eye - but is still too far for comfort...If I shorten the stock I get a good picture, but it doesn't feel as stable as I'd like - if I extend the stock full length I really have to strain my neck to see a full FOV.
Has anyone experienced the same thing? I eventually would like to go with a prism scope to suit my interest in quicker aim + magnification for the longer range target practice shots, but I read those also have a short eye relief which I'd assume would need to be right over the breach to have full FOV. What's the fix for this? I don't want to buy another scope for a little bit so hoping to get some insight as to setups that help alleviate that problem.
Thanks again for everyone's help getting the plenum/barrel project on point!
 
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