@@cg7509 anything with a shallow skirt seems to hang up and pretty much anything with a deep skirt is ok. Thanks for stopping by. Have a great day and be safe out there.
Kudos on your problem solving skills. A year ago I encountered the exact same problem with my 25cal Hatsan Flashpup. Magazine design is the same as the Umarex Notos including the half moon cradles in the center star rotor as well as having the gap between the clear cover and the top of the rotor. And just like you, I noticed that the pellets exit the magazine at an angle and were getting snagged on the edge of the barrel breach. Problem was, all pellets I tried did the same regardless of their shape, and from all three brand new factory magazines I had. Unlike you, I never thought about the potential influence of pellet skirt depth and bolt probe length/shape. But I did notice that the breach of the barrel had essentially no bevel to help guide pellets into the bore. So I took my rotary dremel tool, inserted a 1/8" carbide milling bit, mounted it in a horizontal stand to hold it steady, and then went to work milling a serious bevel inside the barrel breach by turning the barrel. Problem solved. Now every pellet of every kind, regardless of overall length, nose profile, or skirt depth all load as smooth as silk from all three factory magazines I have. After watching your video however, I'm not sure that I took the right approach, because even though it completely solved the issue with reliably feeding pellets into the breach, it may have done nothing to prevent the pellet's skirts from getting deformed by the magazine's rotor crushing them upon exiting. Obviously the problem lies with the design of the factory magazines and the bolt probe shape and length. Those parts should be designed to work harmoniously with all pellet shapes. Ironically, the first two pellet tins I purchased and tried in my new Hatsan Flashpup were H&N Hornet and H&N Baracuda, which as I understand it are a pellet brand manufactured by Hatsan. Makes me wonder how much due diligence and testing Hatsan actually performs before they release their new airguns. Truly unacceptable. Cost me many hours of testing, reworking, and general frustration. Imagine just entering the world of PCP airguns by purchasing a new air rifle, and then finding that every pellet of every kind gets jammed from all three brand new factory magazines. The consumer selected the rifle because it came with a magazine pellet feeding system, and then faces the prospect of having to single load every pellet into the breach by hand one at a time. I think the proper solution would be a redesigned bolt probe where the shape of the probe is almost uniform diameter along it's length with just a gentle taper at the tip, or just a simple rounded tip.
Thanks for the comment. I thought about adding a little bevel into the chamber, the Notos has a really sharp entry. I decided against that because it didn't address the "ejection" problem. I think since the Maple Customs magazine works with every pellet it could be addressed with a change in the magazine. I think the best solution is a slightly change in the magazine AND the probe. It also occurs to me that by seating the pellet with the pointed probe the the seating depth will be different depending on the depth of the skirt. The flow through design I've seen like on the Benjamin 340 used a probe with a hole in the side that matched the transfer port and the tip was hollow. This seated the pellet by the skirt so all pellets were started from the same depth. Starting from a deeper seat is probably more of an issue with a multi pump air rifle. Due to the very low volume of air the void behind the pellet would actually cause a reduction in pressure since the small volume of air would lose pressure simply filling the void behind the pellet. On a PCP this might not be as much of a problem depending on plenum volume. I'm planning an experiment on the probe that will increase the length of the major diameter by a couple of mm. I'll also see what if any impact it has on velocity all other things being equal. It may take a bit yet, I'm still at my day job 90-ish hours a week. Thanks for stopping by. Have a great day and be safe out there.
Now that you mention it, I have a brand new original version Benjamin Marauder rifle in 25cal, still new in the box. I purchased it a it a few years ago, but never fired it because it was too big and heavy for my purpose, but too beautiful to resell. It's also a bit of a collector's item that has some sentimental value since this PCP rifle, along with more economical Benjamin Discovery, really launched the current PCP movement in the USA. Anyway, it just occurred to me that it also uses the same style of magazines as your Umarex Notos and my Hatsan Flashpup. And if memory serves me correctly, it has a relatively fat uniform bolt probe that is hollow....basically a hollow tube style probe that's slightly rounded at the end. And like you described with your Benjamin 340, the Benjamin Marauder is designed to deliver air into the breach through the center of this hollow probe, directly to the rear of the pellet. I would be willing to bet that due to the large diameter of this bolt probe, no jamming of pellets or deformation of their skirts is going to occur when feeding them from the magazine into the breach. I read many blogs and reviews of the Marauder before purchasing it, and I never once noticed any mentions of failure to feed from the magazine or poor accuracy (that would result from pellet damage/deformation caused by the magazine feeding system).
And just one more thing. You inspired me to message Hatsan USA and not only inform them of the failure to feed issue, but also direct them here to watch your video and read this discussion to learn something they're obviously missing. I will probably purchase the Umarex Notos in the future, but I'll try to wait as long as possible for a version 2, where perhaps they've corrected the issue with the magazine/probe design. Why should we be forced to seek out an aftermarket 3rd party and spend more money to purchase replacement magazines and attempt to correct flaws that shouldn't exist to begin with. These are really basic fundamental design flaws that shouldn't exist at this stage in the game.
@@akenedy thanks! I agree, they need to test with a broad range of pellets not just hope you use the one pellet that feeds well. The good side of the Maple Customs magazine is by using two it matches my shot count. 🤷♂️ I think Umarex should take a second look at that also.
I bought a umarex years ago same problems quit shooting it refuse to ever buy another umarex .If they don't function properly stock have no use for junk.
@@terrykern397 it's a bit frustrating for sure. As long as you stay with a pellet with a deep skirt they feed fine. Heavy pellets with shallow skirts just plain don't feed. Thanks for stopping by. Have a great day and be safe out there.
I can't even load one JSB 18. I've seen several people that have good luck with them. A close friend just ordered one so I'll see what his does. Thanks for stopping by. Have a great day and be safe out there.
Thanks for researching and enlightening the rest of us so we don’t have to! Nice you don’t have to buy another magazine if you don’t want .
You bet! It's fun to tinker so why not share as we go. Have a great day and be safe out there!
This is great, I am having this exact issue! normally it just the first round.
@@cg7509 anything with a shallow skirt seems to hang up and pretty much anything with a deep skirt is ok.
Thanks for stopping by. Have a great day and be safe out there.
Kudos on your problem solving skills. A year ago I encountered the exact same problem with my 25cal Hatsan Flashpup. Magazine design is the same as the Umarex Notos including the half moon cradles in the center star rotor as well as having the gap between the clear cover and the top of the rotor. And just like you, I noticed that the pellets exit the magazine at an angle and were getting snagged on the edge of the barrel breach. Problem was, all pellets I tried did the same regardless of their shape, and from all three brand new factory magazines I had. Unlike you, I never thought about the potential influence of pellet skirt depth and bolt probe length/shape. But I did notice that the breach of the barrel had essentially no bevel to help guide pellets into the bore. So I took my rotary dremel tool, inserted a 1/8" carbide milling bit, mounted it in a horizontal stand to hold it steady, and then went to work milling a serious bevel inside the barrel breach by turning the barrel. Problem solved. Now every pellet of every kind, regardless of overall length, nose profile, or skirt depth all load as smooth as silk from all three factory magazines I have. After watching your video however, I'm not sure that I took the right approach, because even though it completely solved the issue with reliably feeding pellets into the breach, it may have done nothing to prevent the pellet's skirts from getting deformed by the magazine's rotor crushing them upon exiting. Obviously the problem lies with the design of the factory magazines and the bolt probe shape and length. Those parts should be designed to work harmoniously with all pellet shapes. Ironically, the first two pellet tins I purchased and tried in my new Hatsan Flashpup were H&N Hornet and H&N Baracuda, which as I understand it are a pellet brand manufactured by Hatsan. Makes me wonder how much due diligence and testing Hatsan actually performs before they release their new airguns. Truly unacceptable. Cost me many hours of testing, reworking, and general frustration. Imagine just entering the world of PCP airguns by purchasing a new air rifle, and then finding that every pellet of every kind gets jammed from all three brand new factory magazines. The consumer selected the rifle because it came with a magazine pellet feeding system, and then faces the prospect of having to single load every pellet into the breach by hand one at a time. I think the proper solution would be a redesigned bolt probe where the shape of the probe is almost uniform diameter along it's length with just a gentle taper at the tip, or just a simple rounded tip.
Thanks for the comment. I thought about adding a little bevel into the chamber, the Notos has a really sharp entry. I decided against that because it didn't address the "ejection" problem.
I think since the Maple Customs magazine works with every pellet it could be addressed with a change in the magazine. I think the best solution is a slightly change in the magazine AND the probe.
It also occurs to me that by seating the pellet with the pointed probe the the seating depth will be different depending on the depth of the skirt.
The flow through design I've seen like on the Benjamin 340 used a probe with a hole in the side that matched the transfer port and the tip was hollow. This seated the pellet by the skirt so all pellets were started from the same depth.
Starting from a deeper seat is probably more of an issue with a multi pump air rifle. Due to the very low volume of air the void behind the pellet would actually cause a reduction in pressure since the small volume of air would lose pressure simply filling the void behind the pellet.
On a PCP this might not be as much of a problem depending on plenum volume.
I'm planning an experiment on the probe that will increase the length of the major diameter by a couple of mm. I'll also see what if any impact it has on velocity all other things being equal.
It may take a bit yet, I'm still at my day job 90-ish hours a week.
Thanks for stopping by. Have a great day and be safe out there.
Anyone who loves airguns will love this channel as you are very informative . Great channel great video
@@luckydogcreations1 thanks and thanks for checking it out. Have a great day and be safe out there!
Absolutely outstanding information!👍👍🏾
@@Patt-r2m thank you and thanks for checking it out. Have a great night and be safe out there!
Now that you mention it, I have a brand new original version Benjamin Marauder rifle in 25cal, still new in the box. I purchased it a it a few years ago, but never fired it because it was too big and heavy for my purpose, but too beautiful to resell. It's also a bit of a collector's item that has some sentimental value since this PCP rifle, along with more economical Benjamin Discovery, really launched the current PCP movement in the USA. Anyway, it just occurred to me that it also uses the same style of magazines as your Umarex Notos and my Hatsan Flashpup. And if memory serves me correctly, it has a relatively fat uniform bolt probe that is hollow....basically a hollow tube style probe that's slightly rounded at the end. And like you described with your Benjamin 340, the Benjamin Marauder is designed to deliver air into the breach through the center of this hollow probe, directly to the rear of the pellet. I would be willing to bet that due to the large diameter of this bolt probe, no jamming of pellets or deformation of their skirts is going to occur when feeding them from the magazine into the breach. I read many blogs and reviews of the Marauder before purchasing it, and I never once noticed any mentions of failure to feed from the magazine or poor accuracy (that would result from pellet damage/deformation caused by the magazine feeding system).
And just one more thing. You inspired me to message Hatsan USA and not only inform them of the failure to feed issue, but also direct them here to watch your video and read this discussion to learn something they're obviously missing. I will probably purchase the Umarex Notos in the future, but I'll try to wait as long as possible for a version 2, where perhaps they've corrected the issue with the magazine/probe design. Why should we be forced to seek out an aftermarket 3rd party and spend more money to purchase replacement magazines and attempt to correct flaws that shouldn't exist to begin with. These are really basic fundamental design flaws that shouldn't exist at this stage in the game.
@@akenedy thanks! I agree, they need to test with a broad range of pellets not just hope you use the one pellet that feeds well.
The good side of the Maple Customs magazine is by using two it matches my shot count. 🤷♂️ I think Umarex should take a second look at that also.
I’m guessing it was trial and error? So try until you find one that works . Or get a different magazine . Great tip
@@cookingwithsherry looks like just about any pellet with a deep skirt will work but the Maple Custom magazines are nice anyway.
Could the stock magazine get a thin shim to fix it?
@@cliffb.2416 maybe. I have two ideas I want to explore as soon as I can find time.
I bought a umarex years ago same problems quit shooting it refuse to ever buy another umarex .If they don't function properly stock have no use for junk.
@@terrykern397 it's a bit frustrating for sure. As long as you stay with a pellet with a deep skirt they feed fine. Heavy pellets with shallow skirts just plain don't feed.
Thanks for stopping by. Have a great day and be safe out there.
My notos runs everything I've tried in it, and i use crosman premiere almost exclusively
I can't even load one JSB 18. I've seen several people that have good luck with them. A close friend just ordered one so I'll see what his does.
Thanks for stopping by. Have a great day and be safe out there.