Leshiy Problem
Hi guys,
Ive bought a first gen. Leshiy. .22 350mm
Run in some troubles. The hammer mod i’ve already done. but maeby to less. i only grinded 0.5 mm on top of the hammer.
The big inconsistent air consumption are gone…
Installed the huma reg. now on 115bar and reaching between (Edit) 259-267 m/s
I still have some speed fluctuations (10m/s). Not sure its the compressing air in the hammer cylinder anymore or a too weak valve spring.
Or may the hammer spring bending friction, which obviously, could happen without the guide pin the new hammer has?
My Hammer Spring looks even but had ali dust on just one side. which indicates a friction… whats your thought about this?
The pellets are not easy to load. Head dia = 5.515
I already emailed Ed about this… waiting for a answer but with IWA he was probably busy…
But where i could need your help the most at the moment, is that my leshiy flipps open while shooting from day one. Normally just a tiny gab, sometimes more, sometimes totally. Depends on power output and how loose i shoot. I guess the snap bolt doesn’t go tight enough. i dont get a click when closing it. and opening seems a lot easier than i see examples in youtube. So i thought to grind the bolt a bit. Scary task, because when i’m doing wrong, the leshiy will stay together forever or will be to loose…
I made a picture of the bolt, i painted it to see where the pen sits in closed position. does this look right for you?
And then, how can i disassemble the snap bolt for grinding it, as i dont wana risk to do it assembled? theres a bolt behind the grip which holds the snap bolt and spring in its housing, how do i disassemble it without risking destroying it?
Thanks for helping me, and sorry for my english 😉
Sincerely
Christof
All Replies
Viewing 15 replies - 1 through 15 (of 15 total)
The lug is an easy part to replace, contact your dealer for one.
if nothing like that/ obvious, something is seriously wrong.
you can let us know about the aftercare you receive
Hi Kris
Ive allready tried to put the barrel more inside its housing. and indeed it made it a little better. But didnt solve the problem…
I thought its getting better after use, but in fact it gets worse. When i shoot the gun loose, without shouldering it, it flipps open almost every time.
Well i try to not reproduce it, as i fear it can damage the Valve when the hammer is bouncing…
But thank you!
Ok then, and its not as long as wingmans… Thanks! One Problem found…
The breech blowing open is worrying, this should not happen, I have tested a 440mm .30cal barrel on mine shooting 1000fps and even with that high breech pressure Ive never seen any signs of the lock failing. Mine locks up very strong with a solid clunk and takes a bit of force to open it again.
It could be the cause of your average shot strings due to a leak but the info above will be a better tune regardless.
Without seeing the gun for myself it hard to guess what the problem is but Id start buy removing and inspecting the plunger part of the latch.
If you remove the plastic pistol grip you will see a 3mm pin that needs punching out from the right to the left. Do this with the breech closed so the plunger is depressed and when you open it it will spring out of the hole. Check for any damage and for free movement without the spring in place..
In your photo it looks like the sides of your plunger are rough?, it should be chrome smooth and slide freely without binding.
Check the plunger extending the full length from the hole when in the closed and open position. make sure that hole is free from excess grease that may be hydraulicing and preventing the latch from moving freely into the locked position.
To reassemble just compress the spring and plunger on a hard flat surface and push the 3mm pin back in.
Check that when it is all assembled the plunger extends 3.2mm from the rear of the gun and can be compressed down below the surface of its holes when pressed in with a screwdriver or something similar.
Lastly check your barrel is flush to the rear face and nothing is protruding from the stock side or in the recess where the plunger locks into the pin.
If there is nothing obvious you can find from this inspection I would order a new plunger. It may be a faulty part. I should be covered by warranty if you haven’t modified it.
Hi Wingman
Thank you for this explanation.
Ive tested now 110 and 115 bar. When i make strings like that, after ive replaced my faulty chrono :confusedn:,
I got allways more or less consitend speeds but with strong peaks . See for your self. There are some peaks which make me confuse.
Ive only grinded 0.5mm on top of the hammer. may this isnt enough to let the hammer breath. But as long as
my leshiy flipps open, i have too many variables anyway, as it influencing everything i guess…. May i have to wait for a new bolt… and then see further.
The Bolt is standing 2.96mm out of the frame. Cant tell in closed postion. So there we have something. PiterM’s Picture is showing a sharp edge, while my bolt is round edged…
Therfore the 0.2mm maeby? And no klicksound?
The bolt runs smooth. I can press it half inside with the thump. after that i need something hard. it goes all the way inside. No feel of friction
or vacuum when releaising it. It is chromy, that was the surface which was reflecting, which gave you the impression its not shiny.
Her is the string…
It seems better with 115bar? less airconsumtion, one more shoot!

By the way.. the accuracy is not realy meaningful. As i also found out that my relatively new Athlon 1-4×24 is broken (loose reticle). allready stay in contact with them and recive a new one. O men, this was such a pain in the ****. I had just to many faulty parts and never knew whats going on. Now step by step otherwise i go crazy, ed allready thinks i am i guess 😐
Thanks Wingman!
Yes, your bolt is much more rounded indeed. Mine looks like on my HW break barrel – quite sharp.

Hi PiterM
Thanks so much for your effort.
This is how it looks with one line with my L. after closing and opening it for 20 times…
Ive shoot about 700 rounds.
Is it just the light of your image or is my edge rounder than yours. That would explain why its not klicking?
Wait ill take the crystal sphere to ask it :rofl:
Well ive writen Ed about sending me a different bolt. But waiting for answer…
Thanks again!

May I ask why you haven’t sent this apparently “Monday Production” back to the dealer?
how deep is your barrel installed? is it not too deep or too much protruding? just a guess looking at all pictures
if nothing like that/ obvious, something is seriously wrong.
you can let us know about the aftercare you receive
More than one problem here, let’s start with consistency.. All my testing shows the Huma reg and plenum works best at 105 to 110bar. If you reset your reg to that and lift your HST it should get better efficiency and tighter strings. You should be able to get 600ish fps to about 930fps with that reg setting just by adjusting the hammer spring tension. find a speed and shot count you are happy with and you will also notice a sweet spot around 880-900fps where the extreme spread will be very minimal.
The breech blowing open is worrying, this should not happen, I have tested a 440mm .30cal barrel on mine shooting 1000fps and even with that high breech pressure Ive never seen any signs of the lock failing. Mine locks up very strong with a solid clunk and takes a bit of force to open it again.
It could be the cause of your average shot strings due to a leak but the info above will be a better tune regardless.
Without seeing the gun for myself it hard to guess what the problem is but Id start buy removing and inspecting the plunger part of the latch.
If you remove the plastic pistol grip you will see a 3mm pin that needs punching out from the right to the left. Do this with the breech closed so the plunger is depressed and when you open it it will spring out of the hole. Check for any damage and for free movement without the spring in place..
In your photo it looks like the sides of your plunger are rough?, it should be chrome smooth and slide freely without binding.
Check the plunger extending the full length from the hole when in the closed and open position. make sure that hole is free from excess grease that may be hydraulicing and preventing the latch from moving freely into the locked position.
To reassemble just compress the spring and plunger on a hard flat surface and push the 3mm pin back in.
Check that when it is all assembled the plunger extends 3.2mm from the rear of the gun and can be compressed down below the surface of its holes when pressed in with a screwdriver or something similar.
Lastly check your barrel is flush to the rear face and nothing is protruding from the stock side or in the recess where the plunger locks into the pin.
If there is nothing obvious you can find from this inspection I would order a new plunger. It may be a faulty part. I should be covered by warranty if you haven’t modified it.
Hi! Checked my Leshiy and it looks as pictured below. I did draw a black line so now you can see a starting point (black spot on top of bolt) and to where it goes (where black line starts again). It’s also quite more shiny than rest of the bolt… well,I shot 4k to 5k of pellets through my Leshiy till now. BTW, maybe it’s a broken bolt spring in your L?

For 250+ m/s your reg is set correctly of course! That might be the opening/flipping issue. But for this kind of power tuning let’s wait for Professor Wingman indeed…
Thank you PiterM !
Was my fault, i wrote the wrong speeds :confusedn:
Christof, yes, I updated my notice about bolt when you’ve been typing your replay. Please check again my answer:
For 250+ m/s your reg is set correctly of course! That might be the opening/flipping issue. But for this kind of power tuning let’s wait for Professor Wingman indeed…
Second question: IMHO your bolt works just fine. Locking pin shouldn’t go all the way to the bottom of the bolt.
Hi Peter.
Im from switzerland, we dont have limitations here…
The target V i would like with the 350mm barrel is between 250-260 m/s (820-853 fps) for 50-70 yard shooting. therfore i need speed. I dont care about shoot count.
Got 15-16 Shoots right now… Sarting at 250bar
With my pellet H&N Baracuda Mach 21.14g this means something between 45-48 J
I allready reach that, but something is holding it back from beeing consitend as you said!
Edit: May its the flipping problem, as there ill loose energy…?
But thanks for your help!
Christof, what’s the target Vo you’re looking for? For sub 17J enegry (just below 180m/s for Exact 16 grain) I was able to go down to 6 m/s fluctuations with original reg and to below 5m/s with Huma (in the whole string, shot-to-show fluctuations were 0-2 m/s). BUT the key was decreasing regulated pressure. 115 bar is just too much, there must be certain ballance between reg pressure and hammer spring. If one overpowers the other one there is NO WAY to get consistent results. Now in your situation you have high pressure in reg and you try to compensate it with ‘delicate’ hammer strike to get about 14-15J as a result. It won’t work. Dial your reg down to 90-95 bar and you should get considerably better results.
Second question: locking pin shouldn’t go all the way to the bottom of the bolt. But if it opens by itself… that is NOT as it should be. Mine never opened like that. Even when gripped by the cylinder. I’ll check exact position in the evening for you, when I’m back home.
Viewing 15 replies - 1 through 15 (of 15 total)
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Hi Keyser
Thanks! My Dealer is Ed himself… At least i bought the Leshiy directly from him.
Im from Switzerland and Ed is not represented here and a lot of EU Countrys around Switzerland have those silly limitations.
I was not sure what the problems are. But now i figured out one in no time, thanks to this Forum!
Maeby its solving the speed inconsitency as well. I hope…