This is from a ruger engineer when I was having issues at first
Gas setting of zero will make it a single shot
Gas setting of 1 is hot load with heavy bullets (High pressures)
Gas setting of 2 is normal operation. If you're shooting standard ammo, this would be best.
Gas setting of 3 is for light loads like sub-sonic and bunny farts. (Low pressures)
I used a bronze Dewey brush on my chamber with copious amounts of solvent then the dry mop. Mine did a couple stove pipes then repeatedly failed to extract when it was dirty. Lube on the BCG good and I run mine wet too. Just keep it out of the chamber.
With gas on 3, and regular loads, that bolt is moving too fast and slamming/bouncing against the end of the buffer stroke.
Clean her up, set your gas on 2, and enjoy!