I’ve got the special in 2 stage and I think I have it as light as it will go. I don’t have an accurate trigger pull gauge though. That being said, I’ve hit the receiver, bolt, and stock and can’t get the firing pin to drop.
B14R 22lr with TT Special, single stage, flat. Just started shooting it. It is adjusted as low as it would go. No problems after a couple of hundred rounds.