Hatsan Jet II with shoulder stock attached.
This report covers:
- Fill
- Velocity?
- RWS Hobby
- Loud!
- Hard to load!
- RWS Superdomes
- JTS 10.4-grain Dead Center dome
- Shot counts
- Summary
Readers, when I test airguns, I test them for you—not for the manufacturer. I have to call them like I see them and today is one such report. We are testing the velocity of the Hatsan Jet II Convertible PCP repeating air pistol.
Fill
The Jet II is a precharged pneumatic (PCP) so the first order of business is to fill it. The two air reservoirs hold a total of 80cc of air pressurized to 250 bar / 3651 psi. For this I used my trusty RovAir Portable compressor. I did attach the GX-PUMP Professional-Grade High Pressure Air Compressor Filter for this fill and I did inject some O-Ring Super Lube in the fill hose. This filter does increase the time it takes to fill because it does not open to fill the gun until 1,800/2,000 psi is reached. When that happens it looks like the gun isn’t filling, but just give it time.
Velocity?
Hatsan and Pyramyd AIR both rate the rifle to 810 f.p.s. / 235 m/s in this caliber but Pyramyd says it only does that with lead free pellets and it does 788 f.p.s. / 240.2 m/s with lead. Hatsan does not say in the manual whether the velocity was obtained with lead or lead free pellets but in the past I’ve always found their numbers conservative, so I’m guessing lead. Let’s start the test.
RWS Hobby
The 7-grain RWS Hobby lead pellet averaged 870 f.p.s. / 265.2 m/s. The low was 860 f.p.s. and the high was 884 f.p.s.—a difference of 24 f.p.s. So the velocity is well above the rated numbers.
Loud!
The discharge was 111.2 dB, which is close to that of a .22 long rifle standard speed cartridge fired in a rifle with a 24-inch barrel (111.7 dB). I needed a silencer!
Fortunately the muzzle of the Jet II is threaded for something. The threads are internal, so I grabbed my AirForce TalonP silencer. It didn’t fit. Okay, they probably went with something more common like a DonnyFL. But no, that one didn’t fit, either. Well, maybe there is an adaptor in the box that will allow a silencer to be attached.
TalonP silencer on the left and DonnyFL Ronin silencer on the right with the Jet’s adaptor in the middle. Nothing fit anything else.
I found something that looks like an adaptor in the box of stuff that came with the airgun. It does screw into the muzzle of the Jet and provides external threads, but to what I don’t know. Nothing in the owner’s manual mentions it, but I would guess it’s for a silencer.
There is probably a back alley in Zonguldak, Turkey, where a guy named Yusuf has a hole-in-the-wall shop selling silencers for the Jet. Stupid BB. Everybody knows that!
Sure, I could research online and find out what others already know—that “suppressors” (airgun PC for silencers) are sold for $40-125 for the Jet II. But why should I? Isn’t that the manufacturer’s job?
So I put on noise-cancelling electronic earmuffs and soldiered on.
Hard to load!
I found the Jet II easy to cock and difficult to load. The single-shot tray that Hatsan provides (and hurrah for that!) fits in the receiver loosely and tends to flip the .177 pellets backwards. At least it did with Hobbys. With domes loading went quicker and better.
I have pushed the single-shot loading tray out of alignment so it stands out.
RWS Superdomes
Next to be tested were RWS Superdomes, This 8.3-grain lead pellet gave the following performance.
Shot….Vel.
1……….817
2……….821
3……….817
4……….817
5……….813
6……….812
7……….803
8……….807
9……….751
10……..795
The average for this string was 805 f.p.s. and the extreme spread was 70 f.p.s. Huh? isn’t that spread a bit large? Maybe it will resolve itself on the next string.
JTS 10.4-grain Dead Center dome
Shot….Vel.
1……….742
2……….730
3……….729
4……….728
5……….725
6……….724
7……….694
8……….1384—chronograph error
9……….613 huh?
|10……..701
11……..696
Well that was an interesting string! Aside from what had to be a chronograph error, the average velocity for the JTS 10.4-grain Dead Center pellet was 708 f.p.s. / 215.8 m/s. The low was 613 and the high was 742 f.p.s., a difference of 129 f.p.s. That’s why I showed you the string.
Could that slowest shot also have been a chronograph error? Perhaps. If so the slowest shot went out at 694 and the fastest shot went 742 f.p.s.—a spread of 48 f.p.s. That’s still too high.
Shot counts
Pyramyd AIR says to expect 48 good shot on one fill. They define good as all the shots that are equal to 85 percent of the highest velocity. So with the RWS Hobby pellet my highest velocity so far (35 shots fired, five of which failed to register) was 884 f.p.s and the average for that string was 870 f.p.s. Eighty-five percent of the high number would be 751.4 f.p.s. and 85 percent of the average velocity would be 739.5 f.p.s.
Shot number 36 in today’s test was a Hobby pellet that went out at:
Shot…..Vel.
36……..774 f.p.s.
37……..771
38……..766
39……..did not register
40……..723
41……..755
42……..746
43……..743
44……..729
45……..718
Okay, by following the 85 percent guideline and using the average, not the high, the Jet II fell off the power curve on shot 40. But then it bounced back on shots 41, 42 and 43. For certainty the pistol fell short on shot 44.
If you are shooting at 10 yards then the 85 percent guideline might work. But at 25 yards and beyond I don’t like it. I would stop shooting around—well, I can’t really call it. The velocity varied so much on the third string that I will only trust the Jet II for 20 shots per fill.
Hatsan makes great shotguns. With airguns, though, they could stand some improvement. The recent test of the Hatsan Factor Sniper Long is more proof of that. Like I said at the beginning of this report I just tell you what I see when I test airguns.
Summary
I wish Hatsan had provided a way to attach a conventional 1/2 by 20 tpi silencer. They do provide an adaptor, but why bother to thread the muzzle and require an adaptor? Why not just thread 1/2X20 tpi. No doubt the reason is because the muzzle is plastic, but this is an opportunity to excel. Embed a metallic cylinder that can be threaded inside the plastic muzzle.
Could the valve be a little more balanced to avoid the velocity swings? Maybe skip the third open sight in front of the breech and spend more time on the valve design?
Please put a Picatinny rail on top of the receiver! Sights are more important than flashlights.
In my opinion, the Hatsan Jet II has a long way to go. But the accuracy test is next and perhaps that will be its redemption.
Tom,
I take it this is an uregulated PCP? No description in Part 1. Link to which is also missing.
https://www.pyramydair.com/blog/2025/09/examining-the-hatsan-jet-ii-convertible-pcp-repeating-air-pistol-part-one/
Seems to be going back to square one for some reason with this pistol carbine.
Siraniko
Siraniko,
Thanks for catching the lack of a link to Part 1. I put one in.
There is a regulated version of the Jet 2 called the QER but the one I’m testing isn’t one.
BB
I got a Jet2 a couple years ago for dirt cheap as a close out. It’s one of those guns that feels like it could have been good if they’d put just a little bit more effort into it. Mine has that Korean cliff’s edge power curve even worse than yours. With a max fill there is no sweet spot and every shot simply loses a little velocity. The two “picatinny” rails on it don’t line up. I forget which is higher and lower now, but I had to add about 1mm in shims to make them line up.
Mine came with an adaptor for a silencer with 1/2×20 threads, but the barrel shroud that it screws into had a casting line left on it that caused the silencer to not line up with the bore causing baffle strikes.
Once all the issues were ironed out it wasn’t a terrible gun. My biggest gripes after fixing it are its weight and its low shot count. It’s reasonably accurate, the adjustable stock on it is pretty good and if I were looking for a small carbine to lend to a young shooter for hunting I would consider it.
It looks like that the only thing I envy is that shoulder stock design. It would be a nice add on to the Velox, which seems to be a better built overall.
Hey friends and neighbors, and all you other folks also!
I went to the 11th Annual Airgun Show in Newton, NC this past Friday and Saturday! I saw one of these for sale while there. I am not certain yet, but it sounds like a good thing I passed on it. I did end up with a PRod though.
I met up with Fawlty Manuel also. He dropped me off his .25 HW90. This thing is a monster. Now I have to get a pump and a gauge for it. I do not want to read any more cheapo jokes out of BB anymore.
Speaking of Hatsan, I also brought a beautiful .177 Galatian home with me. On the .177 front, thanks to FM and his sharp eyes, I also brought home a Maximus. Earlier I had traded a Hawke 2-7x scope for a walnut stocked .177 Discovery. That was a find. I do like walnut.
It is starting to sound like my ranges are going to be busy this year.
RR,
The cheapo jokes will be withheld.
BB
BB,
ROTFWL! They really do not bother me! I have been known to put out the bucks for what I really want though. I think you have done that a time or two yourself. 😉
I was also at the show and enjoyed meeting Faultymanual, Ridgerunner (even if he did want to trade with me these enormous 20×80 binocs – like I said, I don’t have a job spotting from the bridge of a Destroyer for enemy sub periscopes), PGrady and getting re-acquainted again with Paul from Liberty. For me, the goal was to leave with less than I came with and I did succeed.
Fred formerly of the Demokratik Peeples Republik of NJ now happily in GA
FM’s pleasure as well, Fred. FM also succeeded in walking out with less than what he brung in, to Mrs. FM’s surprise. No surprise to Worser Half that she is going back home with a bit more than what she brung.
Fred,
It has been a while since we saw each other. I wish someone would start up the Roanoke shows again.
Paul does have a nice collection of Dianas, does he not.
Did that R9 go back with you?
RidgeRunner of the Demokratik Peeples Republik of VA
P.S. Those binocs go well with my 7x and 12x sets. The tripod mount does help though. 😉
Yup. I only sold one rifle, that 392 Steroid which I was told, was one of 72 built by MacMurray. I traded with BB’s departed friend, Mac, for it. Good to see you, too.
Fred etc
Congrats, Ridgerunner! You had commented that you were looking for EITHER a .177 Discovery OR a .177 Maximus, and you left with both, plus 2 other guns. Sounds like you may need that scope back. Frankly, on all the online auction sites I regularly troll, I have not find either a Discovery or a Maximus (only a couple of Mauraders) to tell you about. But now I can put those searches to sleep. Cheers.
Roamin Greco,
How do you troll the online auction sites 😎 ? In social media, a “troll” is a person who deliberately posts inflammatory, offensive, or disruptive comments to provoke an emotional reaction from others, often for their own amusement. Or do you mean trawl (an act of sifting through something as part of a search)?
Siraniko
Siraniko,
That is like the word “gay”. When I was but a wee bairn, it meant I was happy. Now the male homosexuals have stolen the word to define themselves. I am curious as to where the word lesbians came from. The only difference is the sex.
RidgeRunner,
A quick Google search with AI summary. “The word “lesbian” comes from the Ancient Greek island of Lesbos, the home of the famous poet Sappho, who lived around 600 BCE. Sappho was known for writing poems that expressed love and desire between women. Over time, the adjective “lesbian” came to describe a woman who is romantically and/or sexually interested in other women, directly referencing Sappho’s connection to such themes. ”
Siraniko
Island of Lesbos from the Greek mythology tales such as the Illiad and the poet, Homer. The island of Lesbos was supposedly populated by women who were only sexually attracted to other women.
Fred
The things you can learn on this blog….
By your definition, trawl would fit my intended meaning. But as a person who lives near a Great Lake, where folks like to fish for such fish as walleye, steelhead, and lake trout, by “trolling” lures behind a slowly moving boat, I used troll in that sense. Probably an entymologically related word to trawl, but without the big nets.
I like to troll for online airgun auctions. Otherwise the only people I troll are RidgeRunner and (unsuccessfully) shootski.
;o)
RG,
Now if I can just get my hands on a 3677. I no longer have a use for all these .20 pellets though.
Neither have I at the moment (although I keep seeing nice-looking Beeman R1’s in .20 online…very tempting…but not justifiable right now).
Gift them at X-mas?
Glad FM’s eyes worked well enough to spot that Maximus for you and the price was right too; FM many a time does not see things in front of his face, as Mrs. has pointed out more than once. She is not wrong.
When you tame that HW90 and install that Williams peep sight on it, please share your experiences about that lovable beast. It is a good biceps conditioner at full power.
That Galatian was indeed a beauty; believe the Apostle Paul himself would give it a thumbs up. 😉
FM,
I have already mounted the Williams peep on it but have not started working on my biceps yet. 😉
That Galatian shore is purdy.
RidgeRunner,
Remember Shipmate: It is NEVER TOO Late.
Get going!
shootski
Good for you! Sounds like you had a great time. Wish I could’ve joined you.
Wife and I were hiking in the George Washington National Forest last week. Spent the late afternoons shooting my old Pro Sport and Marksman 56-FTS springers at spinner targets and coke cans.
Is the Galatian the thumb hole style?
Derrick,
Yes, my grandson and I had a pretty good time. He traded his Gauntlet for one of those Turkish bullpups that Benjamin said was theirs and PAIR carried for a bit.
It sounds like you and the Mrs. had a pretty good time.
The Galatian is the “old” style with the walnut stock (adjustable length and cheek riser) and the light brown receiver, not the thumb hole stock. Like FM said, it is a real beauty. I have already pulled the open sights off of it and mounted a 3-9x BugBuster on it but have not pulled on the trigger yet.
So, you’ve blocked out the rest of the week for shooting these new acquisitions?
The only Hatsan I have is their reincarnation of the Patriot. Let us know how the Galatian shoots for you.
Derrick,
I could easily block out the week, but I may stretch it out some. Here it is Tuesday and I have not shot any of them. I am in no rush.
I had the Webley/Hatsan Tomahawk. The Quatro trigger on it was a pretty nice one. It was a nice looker also. The Galatian is a sharp looker. I am hoping it is a nice shooter. Even so, it will likely end up somewhere else anyway.
B.B.
Does this gun’s barrel have a choke? How can it be internally threaded AND have a choke? What is the ID of the muzzle, must be much larger than .177 if a threaded insert will fit inside and still let a pellet pass through its middle.
-Y
Yogi,
The part that is threaded is the plastic shroud around the real barrel. I did not say that in the report so you were right to be confused.
Sorry,
BB
B.B.
If you had one of those modern radar chronographs, you would not have so many false readings.
Light screens no longer cut it in this day and age of radar. Why do you think almost ALL the competitors at the Pyramid Cup used one?
-Yogi
Yogi,
I think they used radar chronos because
1. They were shooting from benches, and
2. They are the latest and greatest thing. I will still use my skyscreen chronos in places where radar chronos don’t work.
BB
Where do radar cronos not work? My skyscreens NEVER worked anywhere!
-Y
Yogi,
Radar chronographs do not work when they are just 5 feet from the trap. They also do not work when they are not exactly aligned with the bore. They also do not work when they fail to trigger on the shot.
They are good for some things like shooting from a bench , but they fall short in many situations where I need a chronograph.
BB
Yogi,
Tom owns a LabRadar®.
There are a specific places/conditions that cause Doppler RADARs to get poor or no results.
The biggest issues are the radio signal reflectors located downrange that create a stronger return than the projectile, the other is not having the main lobe of the transmitted signal aligned correctly with the projectile’s flight path and trajectory. More of a minor issue but still significant is the Multi Path returns and Side Lobes that are actually the biggest issue when Tom uses his home indoor range from hallway to his garage.
Even at an Outdoor range the Multi Path returns can cause inaccurate velocity readings.
Most folks don’t take the time to learn how to correctly use their LabRadar® units which is why most folks are buying and using the single measurement doppler RADAR units.
I have been formally educated on RADAR to the expert level and have used multiple RADAR systems since the early 1970’s
NO SMOKE HAS BEEN BLOWN HERE!
shootski
shootski,
They have to be better than fly screen cronos! Mine NEVER worked! Inside, outside, sunny cloudy,. did not matter. All it ever registered was error.
Did you notice how many “errors” Tom had in this report?
-Y
Yogi,
I most certainly did notice and also remember how often my Oehler 35P Optical Chronographs gave results that were wrong (off by more than the stated error tolerance) when my alignment was off by even a little over the optical sensors.
Oehler Research is building the 35P again: https://oehler-research.com/product/35p-complete-kit/
Of course Tom should buy this system: https://oehler-research.com/system-89/
or maybe even their system 88 ;^)
shootski
Yogi, you must be chrony-jinxed; FM has found his DLX “fly screen” chrony to work well and it has been pretty trouble-free so far. One thing FM does after each use is to remove the 9V battery so as to keep contacts and other components from being damaged by leaks. Maybe FM has just been plain lucky with the chrony-in-residence.
B.B. and shootski: how can many people at a shooting contest like the Pyramyd Air Cup use Lab Radar (etc.) From the same firing line without all the radars confusing each other?
Roman,
That didn’t seem to be a problem.
BB
Roamin Greco,
From the Users MANUAL-V1.2:
Frequency range of operation 24.080 to 24.168 GHz 8MHz channel steps
Select the frequency of transmission of the RADAR. In order
to use multiple radars close to each other, use a different
frequency for each RADAR. Failure to do so may result in
bad operation of the radar.
For contiguous Labradar, try to use at least a 2 channels
separation.
Also the beamwidth is fairly narrow at 7.6° x 18.5° (azimuth x elevation on Transmit) which will keep other lanes directly to the Left and Right out of the main RADAR Lobe of each unit.
Hope that makes sense.
shootski
PS: the other Doppler RADARS are probably on different frequencies and have channels as well to avoid Crosstalk.
PPS: You can also set, internal, external acoustic and Doppler TRIGGER sensitivity if other lanes shot report (BANG) are triggering your unit along with judicious short period of time in setting the ARMED TIME.
Yep. Thanks!
Yogi,
Send me your skyscreen chronograph. I need another one.
I have considered a radar chronograph but would much rather spend that huge amount of money on something else, most especially when I can buy five or six of the skyscreen types for the cost of one of those radar thingies.
You bought one of those radar thingies? The man who will not buy a compressor or tank because it costs so much?
RR,
I threw that piece of garbage out!
Why buy a compressor and/or tank when all you have are springers?
-Y
Yogi,
If you buy a compressor and/or tank, you just might buy a PCP to go along with those sproingers. If you can afford a radar thingie, you can afford those.
No space! Guys at the range show up in pick-up trucks loaded with stuff. They need carts to bring it all in.
I have a range bag and gun case, one trip from the car! All my 4 rifles are in cases standing up in my closet because that is the only space for them. I live in an apartment, small one at that….
Not all of us live in palatial country mansions like you seem to do. No 5 car garage, 2,000 square foot shop, no swimming pool, but I can walk to stores in 5 minutes.
-Yogi
B.B. in the summary did you mean to say “1/2 by 20” thread, as opposed to “1/2 by 28”? Mine came with a 1/2 by 20 adapter.
This was my first PCP. It lasted about a month before the valve stem snapped into three pieces. I was filling from a Hill hand pump and only to about 2-300psi below max (on the hand pump, which I now know is accurate. The gauge on the gun was off, though I don’t recall which way or by how much.) Others have had this problem with the valve stem breaking. I also found the Jet to be awkward to hold and to shoot. The grip was more style than a proper fitting grip, at least for my hands. It was reasonably accurate, as far as the funky sights allowed. I too found it excessively loud.
Hatsan wanted me to pay shipping, and with a very long turnaround time for repair. So I took it apart to confirm the broken stem, kept a couple parts, tossed the rest in the garbage, and bought an Air force TalonSS. I have not really considered any Hatsan again. I feel like they have some engineering and quality control issues to overcome.
Jared
Jaren,
Good catch. That was a firearm silencer.
BB
I think I prefer the Notos to the Jet.
David Enoch
B.B. and Readership,
Today is the 250th Birthday of the US Navy!
Founded as the Continental Navy on October 13, 1775.
Proud to have been a serving/retired member for over one fifth of those years!
shootski
Everyone,
Happy birthday, Navy!
BB
Go Navy! Too bad the “Mighty Mo” is not able to fire a salvo from its main guns in salute to the Navy today.
shootski,
Once upon a time, I too was a Squid. It was not always a fun time, but I would not trade that experience for anything.
Argh Mate!
Underway’s The Only Way!
Land Is a Navigational Hazzard!
Sailors Were Made For Ships and Ships Were Made For The Seas!
Aarrgh!
Tom,
I had similar trouble with the adapter. I ran it through a 1/2-20 die and it ran the threads, but it did shave a bit of aluminum and a LOT of black paint. I think the tooling they use for the threaded adapter worn out. The threads are shallow and the paint is thick.
I am in need of a new chronograph. The other day I was enjoying a peaceful afternoon out on the range, when all of the sudden this monster of a bear charged towards me. I aimed my .22 cal 97K pellet rifle at it and fired. A perfect shot and my chronograph fell over dead as the bear, had there actually been one. Oh well. Anyway, dead monster or not, I must have a new chrono. Are any of you familiar with the Athlon Optics Chronograph? From what I can tell at Pyramyd, it seems to be a reasonable model. Any advice? I’ll try to avoid tall tells in the future. Orv.
Hoppalong Doc,
Didn’t you see my reply to Yogi?
Oehler Research is building the 35P again: https://oehler-research.com/product/35p-complete-kit/
Of course Tom should buy this system: https://oehler-research.com/system-89/
or maybe even their system 88 ;^)
O. Planet has one of their Blazin Deals going on a LabRadar V1
shootski
Orv,
My Caldwell did not die as spectacularly as yours, but just went nuts. I do not know about the Athlon one, but the Pro chronos are nice.
Pyramyd search box doesn’t recognize “O-Ring Super Lube”. Are you referring to Crosman Pellgun Oil and/or RWS Air Chamber Lube? Tia.
Calvin,
No. I specifically mean O-Ring Super Lube. Look it up online. RWS Chamber Lube would also work for this, but NEVER use Crosman Pellgunoil for this, because it is petroleum based. It can ignite in the presence of oxygen.
Please read this report:
https://www.pyramydair.com/blog/2016/11/some-talk-about-airgun-lubrication-part-2/
BB