Tuning Leshiy2 dwell time - tuning question

[bigHUN]

.22 and .25 with several barrels configuration. Also have a REPR and a full jets kit.
I am trying to find a balance with a Reg pressure + jet size - and not to get a monster air blast at the muzzle.
For example right now playing in between 120-130 bars and 03 and 04 jets for a speed 920-960 with JSB MRD 25.4 gr.
I need that speed, but looks like the pellets tumbling = the POI group is awful with lot of flyers.
I am investigating this phenomena for some time and got to a very last idea to try before I retire these MRD's for a good - feels like the skirt gets a last kick from airblast at the muzzle.

How to adjust the dwell timing in L2 to have a acceleration only inside rifling?

 

[Glem.Chally]

The jets effect dwell time, try larger orificed ones. The downside of this is you will lose power or have to raise reg pressure.

 

[delooper]

Other than what Glem.Chally suggests (which is a good suggesiton), a muzzle brake can help as well.

 

[bigHUN]

Yes, looks like a "try this and that" is a key

 

[CoyoteGod]

I am working on this exact issue. Small jets lower reg or larger jets and high reg, but you would think the in between is the sweat spot, well it wasn’t. Lol. Still working on the right combo of jets to reg, projectile weight and barrel length.

 

[bigHUN]

I tried any configuration with smaller then 0.6 jets. Tomorrow heading to my range again and I installed 2x0.8 and want to see if increasing the orifice size do exactly what?

 

[bigHUN]

Just got back from my gunclub, tried the 2x0.8 jets and gradually raising up the Reg from 110 to 160 bars,
I could not make the MRD's group well, I am retiring these and going back to AA FT.
What I noticed the larger jets + higher Reg moved the pellets slower - or weaker ,,, and couple pellets (3 actually) stuck at the transfer edge from mag to a barrel throat and stopped the indexing. Pretty impressive force in that indexing mechanism I can say by seeing the deformed lead.