Tuning Leshiy2 mag allignement?

[bigHUN]

Anybody can check please the .22 mag dimension to me please?
My story: .......... for some time I am desperately trying to tune the MRD's with the .22x500 poly barrel with no luck, the pellets tumbling or just eratical POI.
Yesterday I re-polished the lead-in also the a new crown on this barrel, (and every time I replace I always mark it with a color marker).
Today at my gunclub I shoot five different brand and weight pellets @50 meters, averaging 1-2" group size but not smaller, but the MRD's flying very bad, a total disaster I can call it.
Checking now the surface I painted with a black marker, that lower edge is shiny (about 200 pellets ran through it today), that gives me the idea the two holes (in the mag and the barrel) are not 100% aligned. The next picture what I measure on the .22 mag, 30.52 mm = 1.2015". I remember somewhere back in time reading that some people had a same or similar situation.
This small misalignement can work unnoticeable with lightweight pellets, but the MRD is more a solid mass body almost like a slug (btw I have no .22 slugs to try this out).

 

[Glem.Chally]

I get pretty much exactly the same with dial calipers. 30.42-30.5 across multiple measurements.

 

[towle]

Checking now the surface I painted with a black marker, that lower edge is shiny (about 200 pellets ran through it today), that gives me the idea the two holes (in the mag and the barrel) are not 100% aligned. The next picture what I measure on the .22 mag, 30.52 mm = 1.2015".

I did those measurements designing the speed loaders
hdfc = 12.5; //holes distance from center mm
so if a .22 cal / 5.52mm pellet fits the inlet side of mag perfectly the number edge to edge would be 12.5x2+5.52=30.52mm

Its very easy to check the indexing
Take of the back stock, ditto the moderator, ditto the mag plate
Look down the barrel, circle your eye ball around the edge of the barrel end while keeping your focus down on the edge of the magazine, you should see the shadow of the mag edge and it should be even all around

I guess a bore scope would be perfect for this but don't own one

Did you change the index wheel? - looks like metal to me, if you put in a 6mm ball bearing then its undersized and your index is of, should be 6,2mm
Turning the mag should be like a flip-flop motion, no rocking movement at all until it shifts position

Its all made on CNC with very tight tolerances

 

[towle]

This small misalignement can work unnoticeable with lightweight pellets, but the MRD is more a solid mass body almost like a slug

More mass = longer impulse on the lock, could also be a locking problem
I had this problem with my very first L2, the locking latch was moving up ever so slightly for every shot, the tell was lead flake spitting found between the mag and the mag plate, ended up making a new latch

To test for locking problems, shoot through mag as usual but open and close the breech every shot

To test for indexing problems, remove mag, insert pellet directly in the barrel, replace mag

 

[bigHUN]

I have no indexing problem, that 6mm steel bearing is just fine there
I look inside a hole with a jewellery lupe, looks like the barrel hole is less then 30.52 /2, the bottom edge is less at 6 a clock (this why I said the indexing is OK, if anything wrong with indexing the edge would be 7 or 5 a clock).
Next week I will take the L2 to my friends machine shop and measure it on CNC.
What I didn't tried to index the barrel, I am going right now to check that.
Also, I made this screenshot 2021.09.29 but the actual conversation may be older (whenever I see people talking about some troubleshooting I am saving a screenshot)
That 4 degree somebody put it there with purpose but my barrel doesn't have it.......... this why I assume some conversation was taking place in the past.

 

[bigHUN]

OK, I did some quick measurements precise as much I could, scetch it up in my CAD software.
And here it is:

0.09mm (0.0035") the edge is off and I double checked with dual measuring. This can clip the pellet head also the skirt, and most likely the previous drawing in Russian addresses some related issues.
This again at this moment doesn't necesserely means the 14mm bore for the barrel in the action is off ... maybe just the lead-in in the barrel "breach". Anyway, I will crosscheck on my friends CNC all the non aligning dimensions.

 

[towle]

0.09mm (0.0035") the edge is off and I double checked with dual measuring. This can clip the pellet head also the skirt, and most likely the previous drawing in Russian addresses some related issues.

I doubt that, measurements for an alternative barrel more likely

Opening the lead-in would not solve that problem, you would still get asymmetrical deformation of the pellet

The only way to address an offset would be to skip the index pins between barrel frame and breech plate (hinge plate) and adjust the breech plate, in your case upwards

BTW, the lead-in in my L2 Alfa barrel - a monster redesigned dropped in the barrel leave 1mm of the skirt out

This again at this moment doesn't necesserely means the 14mm bore for the barrel in the action is off ... maybe just the lead-in in the barrel "breach".

If the lead-in is off center (but still in line with bore) you should be able to see it reach in further at the top of your barrel
Is the bore in the center? - have you tested rotating the barrel?

 

[bigHUN]

- have you tested rotating the barrel?

No, I didn't had a time to go back to my shooting range. We cannot read from POI the artifacts/errors shorter then per say 50 meters but I preffer longer like 100 meters. And must be rings so there is something to refer to.
I have no alternative barrel left in .22 and I can kill this platform any time. I am not that so emotionally connected to .22 but my investment into pellets. I have crazy behaving winds at my place and the .22 in my eyes is not a problem helper.
The indexing is correct, I look inside through holes with a high power jewellery lens, the only offset is the breach lead-in at 6 a clock.
I will take some measurement on CNC CMM, and model it up in CAD. I don't believe changing the roller diameter on the indexing mechanisam matters....unless... Edgun did some hidden changes here-and-there between my L2 internal parts and the rest of the World.
And I am very open to this idea that was done along the development process. It is their baby they don't obligate to report.

Edit:
I roll the barrels on four bearings, and measured the runout about a 0.1 mm (I have checked only visually but never actually measured with a dial indicator since I got these barrels from Russia), but the dia is also -0.1, so the stuckup tolerance may be that error on the edge. Tomorrow morning I will fire lapp the .22 with a diamond paste, also planning if I could duplicate some cone into lead-in.