Most common suppressor thread pitch

[Beetroot]

I'd say 5/8x24 was more common, we tend to use 1/2x20 rather than 1/2x28, especially since the demise of semi autos.
I would have though 5/8x24 was to big for a Tikka lite barrel profile.

Definitely more metric threads here but you can get a suppressor in and thread you want, so it doesn't really matter.