Okay, it's a start. Looks like the barrel is oriented properly. Scratch that one off the list.
Upvote 0
I can’t help you until you have a chronograph
I was having consistent accuracy problems with my 350 .22 Leshiy 2. Sister problem was a lower velocity at specified regulator pressure. For example at 130 bar, it was shooting 18.1 grain at 850fps, instead of advertised 915. To get to 915 I had to crank the regulator to 150bar. I was loosing confidence in my shooting skills, blaming barrel, magazines, wind, whatever…
When i took it apart, i found that it came with two 1.4 jet nozzles. By guess, I replaced one of them with 0.4 to make it 1.4+0.4 combo.