So I received my Edgun Leshiy with 250mm .22cal barrel and Dedal Stalker 6X scope a little over 3 weeks ago from Edgun West. I have it set up using the factory regulator shooting the JSB 15.89gr for 12 FPE mainly for rats. I also placed an order for a Huma 12 FPE regulator and I'll see how it performs with it later. For now, I want to see how it shoots with the factory regulator.
I'm basing my settings using different pellets and Strelok Pro. I know it's only 12 FPE but with the factory regulator, I'm getting a decent amount of shots somewhere like 35 to 40 shots from 250 BAR fill down to 135 BAR. With Strelok Pro, I can see the trajectory and FPE at different ranges using different pellets. Pretty cool.
Using Strelok, my zero is set at 17 yards and it gives me the least amount of hold under using a 16gr pellet. It's perfect for my limited range around my house and backyard for rats. What amazed me about this little gun was shooting a dove at 62 yards. Although it took a second shot to nail it because I didn't have a stable rest, I was surprised.
For my testing with different pellets, I shot 10 pellets through my chrony to get an average for each different pellet brand. Besides JSB 15.89gr Exacts, I tried H&N Baracuda Match 21gr., 5.53 head size. The only thing I didn't care for was the fit into the chamber. It was tight. I also noticed this in my Daystate Huntsman Regal.
Considering both barrels are made by LW, I still want to try the Baracudas in smaller head sizes; 5.52, 5.51 and 5.50mm if they make them. What I noticed with the Baracudas was that they were erratic shooting through my chrony. Somewhere like 20 to 30 FPS extreme spread in a 10 shot string. For the Baracudas, I increased the velocity 2 clicks to get me an average of 576 FPS/15.47 FPE. The reason I increased the velocity was to have the trajectory similar to the 16gr pellets and to have the same point of impact at my zero range, 17 yards.
The five shot group on the top target is at 576 fps. The target in the middle was 2 five shot groups. The cluster in the bottom of the middle target was without adjusting the HST shooting the Baracudas at 510 fps. The bottom target was shot using JSB 15.89gr just to see if it was still zeroed.

Strelok data for the Baracudas...
The next pellets I tried was the JSB branded FX 18gr. Pretty decent.
JSB Predator Polymags 16gr Standard Length. What I noticed is that after 10 shots over the chrony and 25 shots for groups was that on group #6, it really tightened up. So what I have to revisit changing to different pellets is to lead in the barrel for 35 to 40 shots. It's a lot of work but oh well.
I don't know what happened to group #3. Tired maybe? On group #4, i only put one pellet on it and it started to rain cats and dogs and had to pack it up before I went into work that evening.
Strelok data for JSB Predators 16gr...

I still have JSB Hades, H&N Baracuda Hunter Extreme, JSB Predator Shorts, JSB 14.35gr and H&N Sniper Magnum 17.9gr pellets to test out. I'm going to make sure they leaded in properly this time. Next test after this is at 50 yards. I'll post later.
PS, sorry for the long post lol.
I'm basing my settings using different pellets and Strelok Pro. I know it's only 12 FPE but with the factory regulator, I'm getting a decent amount of shots somewhere like 35 to 40 shots from 250 BAR fill down to 135 BAR. With Strelok Pro, I can see the trajectory and FPE at different ranges using different pellets. Pretty cool.
Using Strelok, my zero is set at 17 yards and it gives me the least amount of hold under using a 16gr pellet. It's perfect for my limited range around my house and backyard for rats. What amazed me about this little gun was shooting a dove at 62 yards. Although it took a second shot to nail it because I didn't have a stable rest, I was surprised.
For my testing with different pellets, I shot 10 pellets through my chrony to get an average for each different pellet brand. Besides JSB 15.89gr Exacts, I tried H&N Baracuda Match 21gr., 5.53 head size. The only thing I didn't care for was the fit into the chamber. It was tight. I also noticed this in my Daystate Huntsman Regal.
Considering both barrels are made by LW, I still want to try the Baracudas in smaller head sizes; 5.52, 5.51 and 5.50mm if they make them. What I noticed with the Baracudas was that they were erratic shooting through my chrony. Somewhere like 20 to 30 FPS extreme spread in a 10 shot string. For the Baracudas, I increased the velocity 2 clicks to get me an average of 576 FPS/15.47 FPE. The reason I increased the velocity was to have the trajectory similar to the 16gr pellets and to have the same point of impact at my zero range, 17 yards.
The five shot group on the top target is at 576 fps. The target in the middle was 2 five shot groups. The cluster in the bottom of the middle target was without adjusting the HST shooting the Baracudas at 510 fps. The bottom target was shot using JSB 15.89gr just to see if it was still zeroed.

Strelok data for the Baracudas...
The next pellets I tried was the JSB branded FX 18gr. Pretty decent.
JSB Predator Polymags 16gr Standard Length. What I noticed is that after 10 shots over the chrony and 25 shots for groups was that on group #6, it really tightened up. So what I have to revisit changing to different pellets is to lead in the barrel for 35 to 40 shots. It's a lot of work but oh well.
I don't know what happened to group #3. Tired maybe? On group #4, i only put one pellet on it and it started to rain cats and dogs and had to pack it up before I went into work that evening.
Strelok data for JSB Predators 16gr...

I still have JSB Hades, H&N Baracuda Hunter Extreme, JSB Predator Shorts, JSB 14.35gr and H&N Sniper Magnum 17.9gr pellets to test out. I'm going to make sure they leaded in properly this time. Next test after this is at 50 yards. I'll post later.
PS, sorry for the long post lol.