@blackpaw
Super subjective. I want to be fair because lots of sensitive people here on AGN... But since I know you have shot an impact and a Taipan veteran I can say this... It's not crazy loud and it's definitely not quiet. It sounds just like a powerful nail gun. It is nowhere near as quiet as a 22 Taipan Veteran. Maybe as loud as a 25 Taipan compact stock out of the box, no aftermarket ldc. I'll say the Leshiy 2 is a very different sound. My ears are definitely more sensitive to the sound of the Leshiy 2. With time I believe I will get used to it.
I will say with the stock moderator, 350mm, 22 cal, it isn't too bad.. And if you shoot it 8 times in a tiny group as fast as you can pull the trigger at 25 yards the sound is very much overlooked.
I haven't done alot of testing at farther ranges but the more I shoot it the more I love it. Your 177 may be quieter. Keep me posted as I'll be interested to hear your initial thoughts as well. Just be patient with the wait. It will be worth it!
I am experimenting with a few moderators to see which one matches up best for me.