Tuning Leshiy 2 tuning headache

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DrSeagram

DrSeagram

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Jul 15, 2022
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I received an new Leshiy 2 from Edgun Spain a few weeks ago, the configuration is as follows; new forward plug, EAR, 350mm barrel, .22 calibre, LW barrel, 5mm puck, 2x1.2mm power jets.

First tests at 30y with over 16 various pellets were ridiculous, may as well brought a 12 gauge, then upon inspection & dismantling the moderator I noticed they'd supplied me with a 4.5mm baffle insert by mistake, which they rectified & sent me a whole new moderator with the correct baffle insert size. So now my groups have tightened up to about a 50p size at 30y, using JSB 18.1grn.

But stretching the gun out to 50y the groups are terrible, you can actually see the pellets spiralling out of control? So im thinking there's something not right with the tune of the gun, sending back the gun is a no-go, it took almost 3 months to arrive in 4 boxes......a bloody logistical nightmare & complete headache.......(be warned if your thinking of ordering one)!!
Now I also own a HW110 & a HW97, so im semi proficient at shooting & can group both those guns nicely at 50y, so shooter error isn't the issue, nor is it trigger control, scope, even had a gunsmith check the barrel in case it was the issue. Using an FX chrono the guns standard deviation & spread is very good, only a few FPS

Can anyone please share data with me on power jet sizes, reg pressures & puck sizes.......this whole area seems a conflicting mine field of cloak & dagger information out the on the web? I'm not chasing power, or even really shot count, just accuracy for clean dispatch at 50y.

Many thanks in advance.
 
The pellets spiraling is certainly an indication of trouble. This is frequently caused by damage to the pellets somewhere between the magazine and muzzle.
I would first pull out the moderator and inserts and inspect carefully for any signs of contact. Even with a moderator that matches your caliber, if it is not aligned just right there can still be contact, resolved by reaming or drilling of the offending passages a little more. Make sure there are no plastic flashing hairs from the molded moderator that could be contacting pellets and use a dental scraper or other appropriate tool to clean.

Check for alignment between magazine and breech, any burrs in the passages were pellets are charged. I'm not terribly familiar with the Leshiy 2 design, just providing some generalized information. If it is like the Leshiy Classic, there is no transfer port hole in the barrel that could have burrs, but in the classic design, barrels for different calibers are easily interchanged, and it is easy to put one in backwards, however unlikely that sounds. I only mentioned this because it seems like you are an experienced shooter but the accuracy you quote is quite unexpected and unacceptable.

It can be difficult to tell the difference between the breech end of the barrel and the muzzle. Look very carefully at yours and you can tell the breech end because there is a gentle chamfered lead-in to the rifling whereas the muzzle only has a small chamfered crown.

If your gun passes these inspections, then you might consider a different pellet or speed. But the spiraling thing must be addressed first I think.

Good luck,
Feinwerk
 
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First, the Leshiy2 is not a target oriented gun, not the trigger and not the dwell is built for that, but I am using it as well for ring shooting at 50.
I have the same "problem" for couple months, costed me probably 5-6 tins of various amo trying to make it work. Until just recently, I read a post that show me I was desperately heading in a wrong direction. I was also in miss-believe that the ES must be tighter but that is a wrong measure.
The problem is with the air blast coming out at the muzzle, catch the pellet skirt and makes it tumbling. I was recognizing this earlier but just didn't know how to eliminate. The trick is with going towards the larger jets, gradually. Set the Reg with a given jet and radar the speed (to put it in a ballpark) along monitoring the POI, swap the jets towards bigger numbers and we shall see the groups tightening...disregard the Reg pressure also the speed, look at the POI only.
Also, all these said assuming the barrel lead in and the crown is in best shape and order. The next trick is, when you reload the mag (mine mag I am not removing but reloading mounted) push the pellets a little bit deeper inside hole to have a snug fit and not loose or rattle.
My problem is that shooting/tuning my L2 I must go to my gun club, so takes much longer vs ppl plinking comfortably in backyards.
 
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Everything Feinwerk mentions is worth a go, but I have something else for you to check out. I got one of the first L2’s in .22 with a LW 350mm barrel and my experience was actually very similar to yours. I did try some tuning around it with reg and nozzles with no help. What did help was polishing the barrel. I ran JB paste through it for about 25-30 strokes. Then thoroughly cleaned the barrel with pull through and Ballistol until clean. I then gave it a Moly lube. This barrel is now super accurate out to 50 yards (haven’t gone further). I think it’s worth a try.
 
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Feinwerk said:
The pellets spiraling is certainly an indication of trouble. This is frequently caused by damage to the pellets somewhere between the magazine and muzzle.
I would first pull out the moderator and inserts and inspect carefully for any signs of contact. Even with a moderator that matches your caliber, if it is not aligned just right there can still be contact, resolved by reaming or drilling of the offending passages a little more. Make sure there are no plastic flashing hairs from the molded moderator that could be contacting pellets and use a dental scraper or other appropriate tool to clean.

Check for alignment between magazine and breech, any burrs in the passages were pellets are charged. I'm not terribly familiar with the Leshiy 2 design, just providing some generalized information. If it is like the Leshiy Classic, there is no transfer port hole in the barrel that could have burrs, but in the classic design, barrels for different calibers are easily interchanged, and it is easy to put one in backwards, however unlikely that sounds. I only mentioned this because it seems like you are an experienced shooter but the accuracy you quote is quite unexpected and unacceptable.

It can be difficult to tell the difference between the breech end of the barrel and the muzzle. Look very carefully at yours and you can tell the breech end because there is a gentle chamfered lead-in to the rifling whereas the muzzle only has a small chamfered crown.

If your gun passes these inspections, then you might consider a different pellet or speed. But the spiraling thing must be addressed first I think.

Good luck,
Feinwerk
Click to expand...
Hi thanks for taking the time to reply, the barrel can only go in one way on the Leshiy 2 & ive shot the gun with / without the moderator, with similar results.

just spent some more time, air & lead with the gun today & managed these results at 50 yards with the JSB Jumbos 18.13grn, it definitely likes these pellets, but im still getting the odd flier. Still not overly convinced these guns are worth the hefty price tag....

20220715_132635.jpg
 
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ctshooter said:
Everything Feinwerk mentions is worth a go, but I have something else for you to check out. I got one of the first L2’s in .22 with a LW 350mm barrel and my experience was actually very similar to yours. I did try some tuning around it with reg and nozzles with no help. What did help was polishing the barrel. I ran JB paste through it for about 25-30 strokes. Then thoroughly cleaned the barrel with pull through and Ballistol until clean. I then gave it a Moly lube. This barrel is now super accurate out to 50 yards (haven’t gone further). I think it’s worth a try.
Click to expand...
Interestingly enough, I come mainly from a centrefire background, so I did actually polish the barrel with a bore polish, not JB but similar, its a UK version I use in my powder burners. Didn't do the molly lube though.

Thanks for taking the time to help, much appreciated.

20220715_144652.jpg
 
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DrSeagram said:
So now my groups have tightened up to about a 50p size at 30y, using JSB 18.1grn.

But stretching the gun out to 50y the groups are terrible, you can actually see the pellets spiralling out of control?
Click to expand...

Whats is the speed of the heavies? - I cant get my head around why a pellet should suddenly start to spiral unless its a speed to barrel twist problem

I have same L2 in .22 cal / 350mm but with the non chocked Alfa barrel, here's two targets shot with the heavies at 35 yards with group averages 1,62 and 1,37 MOA

Edit: forgot to list the speed, 280m/sec - 919fps, regulator setting as came from the factory

L2 2409 JSB Exact heavy.JPG
 
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towle said:
Whats is the speed of the heavies? - I cant get my head around why a pellet should suddenly start to spiral unless its a speed to barrel twist problem

I have same L2 in .22 cal / 350mm but with the non chocked Alfa barrel, here's two targets shot with the heavies at 35 yards with group averages 1,62 and 1,37 MOA

Edit: forgot to list the speed, 280m/sec - 919fps, regulator setting as came from the factory

View attachment 275585
Click to expand...
844fps, seems most people are using the Alpha barrels with good results, unfortunately mines the LW
 
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DrSeagram said:
844fps, seems most people are using the Alpha barrels with good results, unfortunately mines the LW
Click to expand...

Maybe you need to raise the regulator a bit, I shoot the JSB 18.13gr at 919fps

That it came with a Alfa barrel was a surprise to me, expected a LW barrel - I own 6 PCP's with these and they all shoots light out, often under 1MOA

This Alfa barrel is very picky, do not like the standard Exact at any speed but love the Heavies

BTW, my other two Leshiy in .177 cal is with LW barrels and shoots great, 1.75 MOA is the norm, not pellet picky at all besides the Hades that non of my PCP's like
 
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One thing I've seen several Leshiy 2 users do, is incorrectly attaching the moderator when assembling the gun. If you aren't careful you can easily get a slight mis-alignment.

Perhaps try some target shooting with the moderator off, to see what your groups look like. If there's a big difference between with and without the moderator, that might indicate a mounting problem.
 
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I don't have an L2, but I can tell you the Alfa barrels are probably faster twist than the LW barrels, which is probably why they do better with the heavier stuff. I have 2 Alfa Precision barrels for shooting slugs. Have you tried the larger head size in the JSB 18.1's? It could be that LW barrel is a little too loose for the head sizing you're using? What other ammo have you tried? I'm going to buck the trend here, but I've never had great luck with the JSB 18.1's in my guns. I get one tin that does well, then I get another tin that is garbage. I just stopped using them all together. I mostly shoot H&N pellets, well back when I still shot pellets a lot. Now, I mostly shoot slugs, except for my .177 "house gun".
 
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www.edgunleshiy.shop

LESHIY 2 · TECH SPECS

This product is a PCP airgun with power under legal limitation according to the law in each country we sell. (UK < 16 Joules / 12 ft·lbs - Germany < 7,5 Joules - France < 16 Joules - Sweden < 10 Joules) Power certified by the manufacturer and by Wolfiek Group. This item is intended solely for...
www.edgunleshiy.shop www.edgunleshiy.shop

Scroll down and there is specs for LW barrels and Alpha Precision barrels....
Grooves etc. Example .22 AP barrel has .220 = 5.60 grooves and no choke. In my mind it makes huge difference when start testing what slugs or diabolos works or not...
 
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DrSeagram said:
I received an new Leshiy 2 from Edgun Spain a few weeks ago, the configuration is as follows; new forward plug, EAR, 350mm barrel, .22 calibre, LW barrel, 5mm puck, 2x1.2mm power jets.

First tests at 30y with over 16 various pellets were ridiculous, may as well brought a 12 gauge, then upon inspection & dismantling the moderator I noticed they'd supplied me with a 4.5mm baffle insert by mistake, which they rectified & sent me a whole new moderator with the correct baffle insert size. So now my groups have tightened up to about a 50p size at 30y, using JSB 18.1grn.

But stretching the gun out to 50y the groups are terrible, you can actually see the pellets spiralling out of control? So im thinking there's something not right with the tune of the gun, sending back the gun is a no-go, it took almost 3 months to arrive in 4 boxes......a bloody logistical nightmare & complete headache.......(be warned if your thinking of ordering one)!!
Now I also own a HW110 & a HW97, so im semi proficient at shooting & can group both those guns nicely at 50y, so shooter error isn't the issue, nor is it trigger control, scope, even had a gunsmith check the barrel in case it was the issue. Using an FX chrono the guns standard deviation & spread is very good, only a few FPS

Can anyone please share data with me on power jet sizes, reg pressures & puck sizes.......this whole area seems a conflicting mine field of cloak & dagger information out the on the web? I'm not chasing power, or even really shot count, just accuracy for clean dispatch at 50y.

Many thanks in advance.
Click to expand...
My .22 with 350mm barrel shoots cheap crosman from Walmart great. Tuned down to 730fps for the back yard, I get ragged hole groups at 30 yrds. It actually shoots the crosman tighter than JSB.
 
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